Atmel ATmega324PA Specification Sheet

• Advanced RISC Architecture – 131 Powerful Instructions – Most Single-clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20 MHz – On-chip 2-cycle Multiplier • High Endurance Non-volatile Memory segments – 16/32/64/128K Bytes of In-System Self-programmable Flash program memory (ATmega164PA/324PA/644PA/1284P) – 512B/1K/2K/4K Bytes EEPROM (ATmega164PA/324PA/644PA/1284P) – 1/2/4/16K Bytes Internal SRAM (ATmega164PA/324PA/644PA/1284P) – Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM – Data retention: 20 years at 85°C/ 100 years at 25°C(1) – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation – Programming Lock for Software Security • JTAG (IEEE std. 1149.1 Compliant) Interface – Boundary-scan Capabilities According to the JTAG Standard – Extensive On-chip Debug Support – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface • Peripheral Features – Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel, 10-bit ADC Differential mode with selectable gain at 1x, 10x or 200x – Byte-oriented Two-wire Serial Interface – Two Programmable Serial USART – Master/Slave SPI Serial Interface – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change • Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated RC Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby • I/O and Packages – 32 Programmable I/O Lines – 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF – 44-pad DRQFN – 49-ball VFBGA • Operating Voltages – 1.8 - 5.5V • Speed Grades for ATmega164PA/324PA/644PA/1284P – 0 - 20MHz @ 1.8 - 5.5V • Power Consumption at 1 MHz, 1.8V, 25°C – Active: 0.4 mA – Power-down Mode: 0.1µA – Power-save Mode: 0.6µA (Including 32 kHz RTC) Note: 1. See ”Data Retention” on page 9 for details. 8-bit Microcontroller with 16/32/64/128K Bytes In-System Programmable Flash ATmega164PA ATmega324PA ATmega644PA ATmega1284P Summary Rev. 8152GS–AVR–11/09

Figure 1-1. Pinout Note: The large center pad underneath the VQFN/QFN/MLF package should be soldered to ground on the board to ensure good mechanical stability. (PCINT8/XCK0/T0) PB0 (PCINT9/CLKO/T1) PB1 (PCINT10/INT2/AIN0) PB2 (PCINT11/OC0A/AIN1) PB3 (PCINT12/OC0B/SS) PB4 (PCINT13/MOSI) PB5 (PCINT14/MISO) PB6 (PCINT15/SCK) PB7 RESET VCC GND XTAL2 XTAL1 (PCINT24/RXD0) PD0 (PCINT25/TXD0) PD1 (PCINT26/RXD1/INT0) PD2 (PCINT27/TXD1/INT1) PD3 (PCINT28/XCK1/OC1B) PD4 (PCINT29/OC1A) PD5 (PCINT30/OC2B/ICP) PD6 PA0 (ADC0/PCINT0) PA1 (ADC1/PCINT1) PA2 (ADC2/PCINT2) PA3 (ADC3/PCINT3) PA4 (ADC4/PCINT4) PA5 (ADC5/PCINT5) PA6 (ADC6/PCINT6) PA7 (ADC7/PCINT7) AREF GND AVCC PC7 (TOSC2/PCINT23) PC6 (TOSC1/PCINT22) PC5 (TDI/PCINT21) PC4 (TDO/PCINT20) PC3 (TMS/PCINT19) PC2 (TCK/PCINT18) PC1 (SDA/PCINT17) PC0 (SCL/PCINT16) PD7 (OC2A/PCINT31) PDIP PA4 (ADC4/PCINT4) PA5 (ADC5/PCINT5) PA6 (ADC6/PCINT6) PA7 (ADC7/PCINT7) AREF GND AVCC PC7 (TOSC2/PCINT23) PC6 (TOSC1/PCINT22) PC5 (TDI/PCINT21) PC4 (TDO/PCINT20) (PCINT13/MOSI) PB5 (PCINT14/MISO) PB6 (PCINT15/SCK) PB7 RESET VCC GND XTAL2 XTAL1 (PCINT24/RXD0) PD0 (PCINT25/TXD0) PD1 (PCINT26/RXD1/INT0) PD2 (PCINT27/TXD1/INT1) PD3 (PCINT28/XCK1/OC1B) PD4 (PCINT29/OC1A) PD5 (PCINT30/OC2B/ICP) PD6 (PCINT31/OC2A) PD7 VCC GND (PCINT16/SCL) PC0 (PCINT17/SDA) PC1 (PCINT18/TCK) PC2 (PCINT19/TMS) PC3 PB4 (SS/OC0B/PCINT12) PB3 (AIN1/OC0A/PCINT11) PB2 (AIN0/INT2/PCINT10) PB1 (T1/CLKO/PCINT9) PB0 (XCK0/T0/PCINT8) GND VCC PA0 (ADC0/PCINT0) PA1 (ADC1/PCINT1) PA2 (ADC2/PCINT2) PA3 (ADC3/PCINT3) TQFP/VQFN/QFN/MLF

Figure 1-2. DRQFN - Pinout Table 1-1. DRQFN - Pinout A1 PB5 A7 PD3 A13 PC4 A19 PA3 B1 PB6 B6 PD4 B11 PC5 B16 PA2 A2 PB7 A8 PD5 A14 PC6 A20 PA1 B2 RESET B7 PD6 B12 PC7 B17 PA0 A3 VCC A9 PD7 A15 AVCC A21 VCC B3 GND B8 VCC B13 GND B18 GND A4 XTAL2 A10 GND A16 AREF A22 PB0 B4 XTAL1 B9 PC0 B14 PA7 B19 PB1 A5 PD0 A11 PC1 A17 PA6 A23 PB2 B5 PD1 B10 PC2 B15 PA5 B20 PB3 A6 PD2 A12 PC3 A18 PA4 A24 PB4 Top view Bottom view A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 A18 B15 A17 B14 A16 B13 A15 B12 A14 B11 A13 A12 B10 A11 B9 A10 B8 A9 B7 A8 B6 A7 A24 B20 A23 B19 A22 B18 A21 B17 A20 B16 A19 A18 B15 A17 B14 A16 B13 A15 B12 A14 B11 A13 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 A7 B6 A8 B7 A9 B8 A10 B9 A11 B10 A12 A19 B16 A20 B17 A21 B18 A22 B19 A23 B20 A24

Figure 1-3. VFBGA - Pinout Table 1-2. BGA - Pinout 1 2 3 4 5 6 7 A GND PB4 PB2 GND VCC PA2 GND B PB6 PB5 PB3 PB0 PA0 PA3 PA5 C VCC RESET PB7 PB1 PA1 PA6 AREF D GND XTAL2 PD0 GND PA4 PA7 GND E XTAL1 PD1 PD5 PD7 PC5 PC7 AVCC F PD2 PD3 PD6 PC0 PC2 PC4 PC6 G GND PD4 VCC GND PC1 PC3 GND A B C D E F G 1 2 3 4 5 6 7 A B C D E F G 7 6 5 4 3 2 1 Top view Bottom view

the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega164PA/324PA/644PA/1284P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 2.1 Block Diagram Figure 2-1. Block Diagram The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than con- ventional CISC microcontrollers. CPU GND VCC RESET Power Supervision POR / BOD & RESET Watchdog Oscillator Watchdog Timer Oscillator Circuits / Clock Generation XTAL1 XTAL2 PORT A (8) PORT D (8) PD7..0 PORT C (8) PC5..0 TWI SPI EEPROM JTAG/OCD 16bit T/C 1 8bit T/C 2 8bit T/C 0 SRAM FLASH USART 0 Internal Bandgap reference Analog Comparator A/D Converter PA7..0 PORT B (8) PB7..0 USART 1 TOSC1/PC6 TOSC2/PC7

of In-System Programmable Flash with Read-While-Write capabilities, 512B/1K/2K/4K bytes EEPROM, 1/2/4/16K bytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte oriented 2-wire Serial Interface, a 8-channel, 10-bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and six software selectable power sav- ing modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or Hardware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to main- tain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consump- tion. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run. The device is manufactured using Atmel’s high-density nonvolatile memory technology. The On- chip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The boot program can use any interface to download the application program in the application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel ATmega164PA/324PA/644PA/1284P is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega164PA/324PA/644PA/1284P AVR is supported with a full suite of program and sys- tem development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits. 2.2 Comparison Between ATmega164PA, ATmega324PA, ATmega644PA and ATmega1284P Table 2-1. Differences between ATmega164PA, ATmega324PA and ATmega644PA and ATmega1284P Device Flash EEPROM RAM ATmega164PA 16 Kbyte 512 Bytes 1 Kbyte ATmega324PA 32 Kbyte 1 Kbyte 2 Kbyte ATmega644PA 64 Kbyte 2 Kbyte 4 Kbyte ATmega1284P 128 Kbyte 4 Kbyte 16 Kbyte

2.3.2 GND Ground. 2.3.3 Port A (PA7:PA0) Port A serves as analog inputs to the Analog-to-digital Converter. Port A also serves as an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port A also serves the functions of various special features of the ATmega164PA/324PA/644PA/1284P as listed on page 81. 2.3.4 Port B (PB7:PB0) Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port B also serves the functions of various special features of the ATmega164PA/324PA/644PA/1284P as listed on page 83. 2.3.5 Port C (PC7:PC0) Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins that are externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port C also serves the functions of the JTAG interface, along with special features of the ATmega164PA/324PA/644PA/1284P as listed on page 86. 2.3.6 Port D (PD7:PD0) Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port D output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port D also serves the functions of various special features of the ATmega164PA/324PA/644PA/1284P as listed on page 88.

reset, even if the clock is not running. The minimum pulse length is given in ”System and Reset Characteristics” on page 330. Shorter pulses are not guaranteed to generate a reset. 2.3.8 XTAL1 Input to the inverting Oscillator amplifier and input to the internal clock operating circuit. 2.3.9 XTAL2 Output from the inverting Oscillator amplifier. 2.3.10 AVCC AVCC is the supply voltage pin for Port A and the Analog-to-digital Converter. It should be exter- nally connected to VCC, even if the ADC is not used. If the ADC is used, it should be connected to VCC through a low-pass filter. 2.3.11 AREF This is the analog reference pin for the Analog-to-digital Converter.

download on http://www.atmel.com/avr. 4. About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documen- tation for more details. The code examples assume that the part specific header file is included before compilation. For I/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC", "CBI", and "SBI" instruc- tions must be replaced with instructions that allow access to extended I/O. Typically "LDS" and "STS" combined with "SBRS", "SBRC", "SBR", and "CBR". Note: 1. 5. Data Retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C.

190 (0xCD) UBRR1H - - - - USART1 Baud Rate Register High Byte 194/207 (0xCC) UBRR1L USART1 Baud Rate Register Low Byte 194/207 (0xCB) Reserved - - - - - - - - (0xCA) UCSR1C UMSEL11 UMSEL10 - - - UDORD1 UCPHA1 UCPOL1 192/206 (0xC9) UCSR1B RXCIE1 TXCIE1 UDRIE1 RXEN1 TXEN1 UCSZ12 RXB81 TXB81 191/205 (0xC8) UCSR1A RXC1 TXC1 UDRE1 FE1 DOR1 UPE1 U2X1 MPCM1 190/205 (0xC7) Reserved - - - - - - - - (0xC6) UDR0 USART0 I/O Data Register 190 (0xC5) UBRR0H - - - - USART0 Baud Rate Register High Byte 194/207 (0xC4) UBRR0L USART0 Baud Rate Register Low Byte 194/207 (0xC3) Reserved - - - - - - - - (0xC2) UCSR0C UMSEL01 UMSEL00 - - - UDORD0 UCPHA0 UCPOL0 192/206 (0xC1) UCSR0B RXCIE0 TXCIE0 UDRIE0 RXEN0 TXEN0 UCSZ02 RXB80 TXB80 191/205

235 (0xBA) TWAR TWA6 TWA5 TWA4 TWA3 TWA2 TWA1 TWA0 TWGCE 236 (0xB9) TWSR TWS7 TWS6 TWS5 TWS4 TWS3 - TWPS1 TWPS0 235 (0xB8) TWBR 2-wire Serial Interface Bit Rate Register 233 (0xB7) Reserved - - - - - - - - (0xB6) ASSR - EXCLK AS2 TCN2UB OCR2AUB OCR2BUB TCR2AUB TCR2BUB 158 (0xB5) Reserved - - - - - - - - (0xB4) OCR2B Timer/Counter2 Output Compare Register B 158 (0xB3) OCR2A Timer/Counter2 Output Compare Register A 158 (0xB2) TCNT2 Timer/Counter2 (8 Bit) 157 (0xB1) TCCR2B FOC2A FOC2B - - WGM22 CS22 CS21 CS20 156 (0xB0) TCCR2A COM2A1 COM2A0 COM2B1 COM2B0 - - WGM21 WGM20 153 (0xAF) Reserved - - - - - - - - (0xAE) Reserved - - - - - - - - (0xAD) Reserved - - - - - - - - (0xAC) Reserved - - - - - - - - (0xAB) Reserved - - - - - - - - (0xAA) Reserved - - - - - - - - (0xA9) Reserved - - - - - - - - (0xA8) Reserved - - - - - - - - (0xA7) Reserved - - - - - - - - (0xA6) Reserved - - - - - - - - (0xA5) Reserved - - - - - - - - (0xA4) Reserved - - - - - - - - (0xA3) Reserved - - - - - - - - (0xA2) Reserved - - - - - - - - (0xA1) Reserved - - - - - - - - (0xA0) Reserved - - - - - - - - (0x9F) Reserved - - - - - - - - (0x9E) Reserved - - - - - - - - (0x9D) Reserved - - - - - - - - (0x9C) Reserved - - - - - - - - (0x9B) Reserved - - - - - - - - (0x9A) Reserved - - - - - - - - (0x99) Reserved - - - - - - - - (0x98) Reserved - - - - - - - - (0x97) Reserved - - - - - - - - (0x96) Reserved - - - - - - - - (0x95) Reserved - - - - - - - - (0x94) Reserved - - - - - - - - (0x93) Reserved - - - - - - - - (0x92) Reserved - - - - - - - - (0x91) Reserved - - - - - - - - (0x90) Reserved - - - - - - - - (0x8F) Reserved - - - - - - - - (0x8E) Reserved - - - - - - - - (0x8D) Reserved - - - - - - - - (0x8C) Reserved - - - - - - - - (0x8B) OCR1BH Timer/Counter1 - Output Compare Register B High Byte 137 (0x8A) OCR1BL Timer/Counter1 - Output Compare Register B Low Byte 137 (0x89) OCR1AH Timer/Counter1 - Output Compare Register A High Byte 137 (0x88) OCR1AL Timer/Counter1 - Output Compare Register A Low Byte 137 (0x87) ICR1H Timer/Counter1 - Input Capture Register High Byte 138 (0x86) ICR1L Timer/Counter1 - Input Capture Register Low Byte 138 (0x85) TCNT1H Timer/Counter1 - Counter Register High Byte 137 (0x84) TCNT1L Timer/Counter1 - Counter Register Low Byte 137 (0x83) Reserved - - - - - - - - (0x82) TCCR1C FOC1A FOC1B - - - - - - 136 (0x81) TCCR1B ICNC1 ICES1 - WGM13 WGM12 CS12 CS11 CS10 135 (0x80) TCCR1A COM1A1 COM1A0 COM1B1 COM1B0 - - WGM11 WGM10 133 (0x7F) DIDR1 - - - - - - AIN1D AIN0D 240 Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page

259 (0x78) ADCL ADC Data Register Low byte 259 (0x77) Reserved - - - - - - - - (0x76) Reserved - - - - - - - - (0x75) Reserved - - - - - - - - (0x74) Reserved - - - - - - - - (0x73) PCMSK3 PCINT31 PCINT30 PCINT29 PCINT28 PCINT27 PCINT26 PCINT25 PCINT24 71 (0x72) Reserved - - - - - - - - (0x71) Reserved - - - - - - - - (0x70) TIMSK2 - - - - - OCIE2B OCIE2A TOIE2 159 (0x6F) TIMSK1 - - ICIE1 - - OCIE1B OCIE1A TOIE1 138 (0x6E) TIMSK0 - - - - - OCIE0B OCIE0A TOIE0 110 (0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 71 (0x6C) PCMSK1 PCINT15 PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 71 (0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 72 (0x6A) Reserved - - - - - - - - (0x69) EICRA - - ISC21 ISC20 ISC11 ISC10 ISC01 ISC00 68 (0x68) PCICR - - - - PCIE3 PCIE2 PCIE1 PCIE0 70 (0x67) Reserved - - - - - - - - (0x66) OSCCAL Oscillator Calibration Register 41 (0x65) Reserved - - - - - - - - (0x64) PRR PRTWI PRTIM2 PRTIM0 PRUSART1 PRTIM1 PRSPI PRUSART0 PRADC 49 (0x63) Reserved - - - - - - - - (0x62) Reserved - - - - - - - - (0x61) CLKPR CLKPCE - - - CLKPS3 CLKPS2 CLKPS1 CLKPS0 41 (0x60) WDTCSR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 60 0x3F (0x5F) SREG I T H S V N Z C 11 0x3E (0x5E) SPH SP15 SP14 SP13 SP12 SP11 SP10 SP9 SP8 12 0x3D (0x5D) SPL SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 12 0x3C (0x5C) Reserved - - - - - - - - 0x3B (0x5B) Reserved - - - - - - - - 0x3A (0x5A) Reserved - - - - - - - - 0x39 (0x59) Reserved - - - - - - - - 0x38 (0x58) Reserved - - - - - - - - 0x37 (0x57) SPMCSR SPMIE RWWSB SIGRD RWWSRE BLBSET PGWRT PGERS SPMEN 290 0x36 (0x56) Reserved - - - - - - - - 0x35 (0x55) MCUCR JTD BODS BODSE PUD - - IVSEL IVCE 92/276 0x34 (0x54) MCUSR - - - JTRF WDRF BORF EXTRF PORF 59/276 0x33 (0x53) SMCR - - - - SM2 SM1 SM0 SE 48 0x32 (0x52) Reserved - - - - - - - - 0x31 (0x51) OCDR On-Chip Debug Register 266 0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 258 0x2F (0x4F) Reserved - - - - - - - - 0x2E (0x4E) SPDR SPI 0 Data Register 171 0x2D (0x4D) SPSR SPIF0 WCOL0 - - - - - SPI2X0 170 0x2C (0x4C) SPCR SPIE0 SPE0 DORD0 MSTR0 CPOL0 CPHA0 SPR01 SPR00 169 0x2B (0x4B) GPIOR2 General Purpose I/O Register 2 29 0x2A (0x4A) GPIOR1 General Purpose I/O Register 1 29 0x29 (0x49) Reserved - - - - - - - - 0x28 (0x48) OCR0B Timer/Counter0 Output Compare Register B 110 0x27 (0x47) OCR0A Timer/Counter0 Output Compare Register A 109 0x26 (0x46) TCNT0 Timer/Counter0 (8 Bit) 109 0x25 (0x45) TCCR0B FOC0A FOC0B - - WGM02 CS02 CS01 CS00 108 0x24 (0x44) TCCR0A COM0A1 COM0A0 COM0B1 COM0B0 - - WGM01 WGM00 110 0x23 (0x43) GTCCR TSM - - - - - PSRASY PSR5SYNC 160 0x22 (0x42) EEARH - - - - EEPROM Address Register High Byte 24 0x21 (0x41) EEARL EEPROM Address Register Low Byte 24 0x20 (0x40) EEDR EEPROM Data Register 24 0x1F (0x3F) EECR - - EEPM1 EEPM0 EERIE EEMPE EEPE EERE 24 0x1E (0x3E) GPIOR0 General Purpose I/O Register 0 29 0x1D (0x3D) EIMSK - - - - - INT2 INT1 INT0 69 Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page

should never be written. 2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these reg- isters, the value of single bits can be checked by using the SBIS and SBIC instructions. 3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers 0x00 to 0x1F only. 4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O regis- ters as data space using LD and ST instructions, $20 must be added to these addresses. The ATmega164PA/324PA/644PA/1284P is a complex microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from $60 - $FF, only the ST/STS/STD and LD/LDS/LDD instructions can be used. 0x1C (0x3C) EIFR - - - - - INTF2 INTF1 INTF0 69 0x1B (0x3B) PCIFR - - - - PCIF3 PCIF2 PCIF1 PCIF0 70 0x1A (0x3A) Reserved - - - - - - - - 0x19 (0x39) Reserved - - - - - - - - 0x18 (0x38) Reserved - - - - - - - - 0x17 (0x37) TIFR2 - - - - - OCF2B OCF2A TOV2 160 0x16 (0x36) TIFR1 - - ICF1 - - OCF1B OCF1A TOV1 139 0x15 (0x35) TIFR0 - - - - - OCF0B OCF0A TOV0 110 0x14 (0x34) Reserved - - - - - - - - 0x13 (0x33) Reserved - - - - - - - - 0x12 (0x32) Reserved - - - - - - - - 0x11 (0x31) Reserved - - - - - - - - 0x10 (0x30) Reserved - - - - - - - - 0x0F (0x2F) Reserved - - - - - - - - 0x0E (0x2E) Reserved - - - - - - - - 0x0D (0x2D) Reserved - - - - - - - - 0x0C (0x2C) Reserved - - - - - - - - 0x0B (0x2B) PORTD PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0 93 0x0A (0x2A) DDRD DDD7 DDD6 DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 93 0x09 (0x29) PIND PIND7 PIND6 PIND5 PIND4 PIND3 PIND2 PIND1 PIND0 93 0x08 (0x28) PORTC PORTC7 PORTC6 PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0 93 0x07 (0x27) DDRC DDC7 DDC6 DDC5 DDC4 DDC3 DDC2 DDC1 DDC0 93 0x06 (0x26) PINC PINC7 PINC6 PINC5 PINC4 PINC3 PINC2 PINC1 PINC0 93 0x05 (0x25) PORTB PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 92 0x04 (0x24) DDRB DDB7 DDB6 DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 92 0x03 (0x23) PINB PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 92 0x02 (0x22) PORTA PORTA7 PORTA6 PORTA5 PORTA4 PORTA3 PORTA2 PORTA1 PORTA0 92 0x01 (0x21) DDRA DDA7 DDA6 DDA5 DDA4 DDA3 DDA2 DDA1 DDA0 92 0x00 (0x20) PINA PINA7 PINA6 PINA5 PINA4 PINA3 PINA2 PINA1 PINA0 92 Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page

Mnemonics Operands Description Operation Flags #Clocks ARITHMETIC AND LOGIC INSTRUCTIONS ADD Rd, Rr Add two Registers Rd ← Rd + Rr Z,C,N,V,H 1 ADC Rd, Rr Add with Carry two Registers Rd ← Rd + Rr + C Z,C,N,V,H 1 ADIW Rdl,K Add Immediate to Word Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S 2 SUB Rd, Rr Subtract two Registers Rd ← Rd - Rr Z,C,N,V,H 1 SUBI Rd, K Subtract Constant from Register Rd ← Rd - K Z,C,N,V,H 1 SBC Rd, Rr Subtract with Carry two Registers Rd ← Rd - Rr - C Z,C,N,V,H 1 SBCI Rd, K Subtract with Carry Constant from Reg. Rd ← Rd - K - C Z,C,N,V,H 1 SBIW Rdl,K Subtract Immediate from Word Rdh:Rdl ← Rdh:Rdl - K Z,C,N,V,S 2 AND Rd, Rr Logical AND Registers Rd ← Rd • Rr Z,N,V 1 ANDI Rd, K Logical AND Register and Constant Rd ← Rd • K Z,N,V 1 OR Rd, Rr Logical OR Registers Rd ← Rd v Rr Z,N,V 1 ORI Rd, K Logical OR Register and Constant Rd ← Rd v K Z,N,V 1 EOR Rd, Rr Exclusive OR Registers Rd ← Rd ⊕ Rr Z,N,V 1 COM Rd One’s Complement Rd ← 0xFF − Rd Z,C,N,V 1 NEG Rd Two’s Complement Rd ← 0x00 − Rd Z,C,N,V,H 1 SBR Rd,K Set Bit(s) in Register Rd ← Rd v K Z,N,V 1 CBR Rd,K Clear Bit(s) in Register Rd ← Rd • (0xFF - K) Z,N,V 1 INC Rd Increment Rd ← Rd + 1 Z,N,V 1 DEC Rd Decrement Rd ← Rd − 1 Z,N,V 1 TST Rd Test for Zero or Minus Rd ← Rd • Rd Z,N,V 1 CLR Rd Clear Register Rd ← Rd ⊕ Rd Z,N,V 1 SER Rd Set Register Rd ← 0xFF None 1 MUL Rd, Rr Multiply Unsigned R1:R0 ← Rd x Rr Z,C 2 MULS Rd, Rr Multiply Signed R1:R0 ← Rd x Rr Z,C 2 MULSU Rd, Rr Multiply Signed with Unsigned R1:R0 ← Rd x Rr Z,C 2 FMUL Rd, Rr Fractional Multiply Unsigned R1:R0 ← (Rd x Rr) << 1 Z,C 2 FMULS Rd, Rr Fractional Multiply Signed R1:R0 ← (Rd x Rr) << 1 Z,C 2 FMULSU Rd, Rr Fractional Multiply Signed with Unsigned R1:R0 ← (Rd x Rr) << 1 Z,C 2 BRANCH INSTRUCTIONS RJMP k Relative Jump PC ← PC + k + 1 None 2 IJMP Indirect Jump to (Z) PC ← Z None 2 JMP k Direct Jump PC ← k None 3 RCALL k Relative Subroutine Call PC ← PC + k + 1 None 4 ICALL Indirect Call to (Z) PC ← Z None 4 CALL k Direct Subroutine Call PC ← k None 5 RET Subroutine Return PC ← STACK None 5 RETI Interrupt Return PC ← STACK I 5 CPSE Rd,Rr Compare, Skip if Equal if (Rd = Rr) PC ← PC + 2 or 3 None 1/2/3 CP Rd,Rr Compare Rd − Rr Z, N,V,C,H 1 CPC Rd,Rr Compare with Carry Rd − Rr − C Z, N,V,C,H 1 CPI Rd,K Compare Register with Immediate Rd − K Z, N,V,C,H 1 SBRC Rr, b Skip if Bit in Register Cleared if (Rr(b)=0) PC ← PC + 2 or 3 None 1/2/3 SBRS Rr, b Skip if Bit in Register is Set if (Rr(b)=1) PC ← PC + 2 or 3 None 1/2/3 SBIC P, b Skip if Bit in I/O Register Cleared if (P(b)=0) PC ← PC + 2 or 3 None 1/2/3 SBIS P, b Skip if Bit in I/O Register is Set if (P(b)=1) PC ← PC + 2 or 3 None 1/2/3 BRBS s, k Branch if Status Flag Set if (SREG(s) = 1) then PC←PC+k + 1 None 1/2 BRBC s, k Branch if Status Flag Cleared if (SREG(s) = 0) then PC←PC+k + 1 None 1/2 BREQ k Branch if Equal if (Z = 1) then PC ← PC + k + 1 None 1/2 BRNE k Branch if Not Equal if (Z = 0) then PC ← PC + k + 1 None 1/2 BRCS k Branch if Carry Set if (C = 1) then PC ← PC + k + 1 None 1/2 BRCC k Branch if Carry Cleared if (C = 0) then PC ← PC + k + 1 None 1/2 BRSH k Branch if Same or Higher if (C = 0) then PC ← PC + k + 1 None 1/2 BRLO k Branch if Lower if (C = 1) then PC ← PC + k + 1 None 1/2 BRMI k Branch if Minus if (N = 1) then PC ← PC + k + 1 None 1/2 BRPL k Branch if Plus if (N = 0) then PC ← PC + k + 1 None 1/2 BRGE k Branch if Greater or Equal, Signed if (N ⊕ V= 0) then PC ← PC + k + 1 None 1/2 BRLT k Branch if Less Than Zero, Signed if (N ⊕ V= 1) then PC ← PC + k + 1 None 1/2 BRHS k Branch if Half Carry Flag Set if (H = 1) then PC ← PC + k + 1 None 1/2 BRHC k Branch if Half Carry Flag Cleared if (H = 0) then PC ← PC + k + 1 None 1/2 BRTS k Branch if T Flag Set if (T = 1) then PC ← PC + k + 1 None 1/2 BRTC k Branch if T Flag Cleared if (T = 0) then PC ← PC + k + 1 None 1/2 BRVS k Branch if Overflow Flag is Set if (V = 1) then PC ← PC + k + 1 None 1/2

if (V = 0) then PC ← PC + k + 1 None 1/2 BRIE k Branch if Interrupt Enabled if ( I = 1) then PC ← PC + k + 1 None 1/2 BRID k Branch if Interrupt Disabled if ( I = 0) then PC ← PC + k + 1 None 1/2 BIT AND BIT-TEST INSTRUCTIONS SBI P,b Set Bit in I/O Register I/O(P,b) ← 1 None 2 CBI P,b Clear Bit in I/O Register I/O(P,b) ← 0 None 2 LSL Rd Logical Shift Left Rd(n+1) ← Rd(n), Rd(0) ← 0 Z,C,N,V 1 LSR Rd Logical Shift Right Rd(n) ← Rd(n+1), Rd(7) ← 0 Z,C,N,V 1 ROL Rd Rotate Left Through Carry Rd(0)←C,Rd(n+1)← Rd(n),C←Rd(7) Z,C,N,V 1 ROR Rd Rotate Right Through Carry Rd(7)←C,Rd(n)← Rd(n+1),C←Rd(0) Z,C,N,V 1 ASR Rd Arithmetic Shift Right Rd(n) ← Rd(n+1), n=0..6 Z,C,N,V 1 SWAP Rd Swap Nibbles Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0) None 1 BSET s Flag Set SREG(s) ← 1 SREG(s) 1 BCLR s Flag Clear SREG(s) ← 0 SREG(s) 1 BST Rr, b Bit Store from Register to T T ← Rr(b) T 1 BLD Rd, b Bit load from T to Register Rd(b) ← T None 1 SEC Set Carry C ← 1 C 1 CLC Clear Carry C ← 0 C 1 SEN Set Negative Flag N ← 1 N 1 CLN Clear Negative Flag N ← 0 N 1 SEZ Set Zero Flag Z ← 1 Z 1 CLZ Clear Zero Flag Z ← 0 Z 1 SEI Global Interrupt Enable I ← 1 I 1 CLI Global Interrupt Disable I ← 0 I 1 SES Set Signed Test Flag S ← 1 S 1 CLS Clear Signed Test Flag S ← 0 S 1 SEV Set Twos Complement Overflow. V ← 1 V 1 CLV Clear Twos Complement Overflow V ← 0 V 1 SET Set T in SREG T ← 1 T 1 CLT Clear T in SREG T ← 0 T 1 SEH Set Half Carry Flag in SREG H ← 1 H 1 CLH Clear Half Carry Flag in SREG H ← 0 H 1 DATA TRANSFER INSTRUCTIONS MOV Rd, Rr Move Between Registers Rd ← Rr None 1 MOVW Rd, Rr Copy Register Word Rd+1:Rd ← Rr+1:Rr None 1 LDI Rd, K Load Immediate Rd ← K None 1 LD Rd, X Load Indirect Rd ← (X) None 2 LD Rd, X+ Load Indirect and Post-Inc. Rd ← (X), X ← X + 1 None 2 LD Rd, - X Load Indirect and Pre-Dec. X ← X - 1, Rd ← (X) None 2 LD Rd, Y Load Indirect Rd ← (Y) None 2 LD Rd, Y+ Load Indirect and Post-Inc. Rd ← (Y), Y ← Y + 1 None 2 LD Rd, - Y Load Indirect and Pre-Dec. Y ← Y - 1, Rd ← (Y) None 2 LDD Rd,Y+q Load Indirect with Displacement Rd ← (Y + q) None 2 LD Rd, Z Load Indirect Rd ← (Z) None 2 LD Rd, Z+ Load Indirect and Post-Inc. Rd ← (Z), Z ← Z+1 None 2 LD Rd, -Z Load Indirect and Pre-Dec. Z ← Z - 1, Rd ← (Z) None 2 LDD Rd, Z+q Load Indirect with Displacement Rd ← (Z + q) None 2 LDS Rd, k Load Direct from SRAM Rd ← (k) None 2 ST X, Rr Store Indirect (X) ← Rr None 2 ST X+, Rr Store Indirect and Post-Inc. (X) ← Rr, X ← X + 1 None 2 ST - X, Rr Store Indirect and Pre-Dec. X ← X - 1, (X) ← Rr None 2 ST Y, Rr Store Indirect (Y) ← Rr None 2 ST Y+, Rr Store Indirect and Post-Inc. (Y) ← Rr, Y ← Y + 1 None 2 ST - Y, Rr Store Indirect and Pre-Dec. Y ← Y - 1, (Y) ← Rr None 2 STD Y+q,Rr Store Indirect with Displacement (Y + q) ← Rr None 2 ST Z, Rr Store Indirect (Z) ← Rr None 2 ST Z+, Rr Store Indirect and Post-Inc. (Z) ← Rr, Z ← Z + 1 None 2 ST -Z, Rr Store Indirect and Pre-Dec. Z ← Z - 1, (Z) ← Rr None 2 STD Z+q,Rr Store Indirect with Displacement (Z + q) ← Rr None 2 STS k, Rr Store Direct to SRAM (k) ← Rr None 2 LPM Load Program Memory R0 ← (Z) None 3 LPM Rd, Z Load Program Memory Rd ← (Z) None 3 LPM Rd, Z+ Load Program Memory and Post-Inc Rd ← (Z), Z ← Z+1 None 3 SPM Store Program Memory (Z) ← R1:R0 None - IN Rd, P In Port Rd ← P None 1 OUT P, Rr Out Port P ← Rr None 1 Mnemonics Operands Description Operation Flags #Clocks

STACK ← Rr None 2 POP Rd Pop Register from Stack Rd ← STACK None 2 MCU CONTROL INSTRUCTIONS NOP No Operation None 1 SLEEP Sleep (see specific descr. for Sleep function) None 1 WDR Watchdog Reset (see specific descr. for WDR/timer) None 1 BREAK Break For On-chip Debug Only None N/A Mnemonics Operands Description Operation Flags #Clocks

and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see ”Speed Grades” on page 328. 4. NiPdAu Lead Finish. Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5V ATmega164PA-AU ATmega164PA-PU ATmega164PA-MU ATmega164PA-MCH(4) ATmega164PA-CU 44A 40P6 44M1 44MC 49C2 Industrial (-40oC to 85oC) Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 44MC 44-lead (2-row Staggered), 5 x 5 x 1.0 mm body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No-Lead Package (QFN) 49C2 49-ball, (7 x 7 Array) 0.65 mm Pitch, 5 x 5 x 1 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)

and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see ”Speed Grades” on page 328. 4. NiPdAu Lead Finish. Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5V ATmega324PA-AU ATmega324PA-PU ATmega324PA-MU ATmega324PA-MCH(4) ATmega324PA-CU 44A 40P6 44M1 44MC 49C2 Industrial (-40oC to 85oC) Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 44MC 44-lead (2-row Staggered), 5 x 5 x 1.0 mm body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No-Lead Package (QFN) 49C2 49-ball, (7 x 7 Array) 0.65 mm Pitch, 5 x 5 x 1 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)

and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see ”Speed Grades” on page 328. Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5V ATmega644PA-AU ATmega644PA-PU ATmega644PA-MU 44A 40P6 44M1 Industrial (-40oC to 85oC) Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN)

and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see ”Speed Grades” on page 332. Speed (MHz)(3) Power Supply Ordering Code Package(1) Operational Range 20 1.8 - 5.5V ATmega1284P-AU(2) ATmega1284P-PU(2) ATmega1284P-MU(2) 44A 40P6 44M1 Industrial (-40oC to 85oC) Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600” Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF)

San Jose, CA 95131 TITLE DRAWING NO. R REV. 44A, 44-lead, 10 x 10 mm Body Size, 1.0 mm Body Thickness, 0.8 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) B 44A 10/5/2001 PIN 1 IDENTIFIER 0˚~7˚ PIN 1 L C A1 A2 A D1 D e E1 E B COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE Notes: 1. This package conforms to JEDEC reference MS-026, Variation ACB. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0.25 mm per side. Dimensions D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Lead coplanarity is 0.10 mm maximum. A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 11.75 12.00 12.25 D1 9.90 10.00 10.10 Note 2 E 11.75 12.00 12.25 E1 9.90 10.00 10.10 Note 2 B 0.30 – 0.45 C 0.09 – 0.20 L 0.45 – 0.75 e 0.80 TYP

San Jose, CA 95131 TITLE DRAWING NO. R REV. 40P6, 40-lead (0.600"/15.24 mm Wide) Plastic Dual Inline Package (PDIP) B 40P6 09/28/01 PIN 1 E1 A1 B REF E B1 C L SEATING PLANE A 0º ~ 15º D e eB COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE A – – 4.826 A1 0.381 – – D 52.070 – 52.578 Note 2 E 15.240 – 15.875 E1 13.462 – 13.970 Note 2 B 0.356 – 0.559 B1 1.041 – 1.651 L 3.048 – 3.556 C 0.203 – 0.381 eB 15.494 – 17.526 e 2.540 TYP Notes: 1. This package conforms to JEDEC reference MS-011, Variation AC. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010").

[email protected] 44M1 ZWS H 44M1, 44-pad, 7 x 7 x 1.0 mm Body, Lead Pitch 0.50 mm, 5.20 mm Exposed Pad, Thermally Enhanced Plastic Very Thin Quad Flat No Lead Package (VQFN) 9/26/08 COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE A 0.80 0.90 1.00 A1 – 0.02 0.05 A3 0.20 REF b 0.18 0.23 0.30 D D2 5.00 5.20 5.40 6.90 7.00 7.10 6.90 7.00 7.10 E E2 5.00 5.20 5.40 e 0.50 BSC L 0.59 0.64 0.69 K 0.20 0.26 0.41 Note: JEDEC Standard MO-220, Fig. 1 (SAW Singulation) VKKD-3. TOP VIEW SIDE VIEW BOTTOM VIEW D E Marked Pin# 1 ID E2 D2 b e Pin #1 Corner L A1 A3 A SEATING PLANE Pin #1 Triangle Pin #1 Chamfer (C 0.30) Option A Option B Pin #1 Notch (0.20 R) Option C K K 1 2 3

REV . Package Drawing Contact: [email protected] 44MC A 9/13/07 D2 E2 L L B15 A18 B11 A13 B10 A12 B6 A7 A6 B5 B1 B20 A1 A24 eT L b R0.20 0.40 eR A19 B16 eT/2 SIDE VIEW A1 A y C D E Pin 1 ID TOP VIEW BOTTOM VIEW Note: 1. The terminal #1 ID is a Laser-marked Feature. COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX N O T E A 0.80 0.90 1.00 A1 0.00 0.02 0.05 b 0.18 0.23 0.30 C 0.20 REF D 4.90 5.00 5.10 D2 2.55 2.60 2.65 E 4.90 5.00 5.10 E2 2.55 2.60 2.65 eT – 0.70 – eR – 0.40 – K 0.45 – – L 0.30 0.35 0.40 y 0.00 – 0.075 44MC, 44QFN (2-Row Staggered), 5 x 5 x 1.00 mm Body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No Lead Package

[email protected] 49C2 CBD A 49C2, 49-ball (7 x 7 Array), 0.65 mm Pitch, 5.0 x 5.0 x 1.0 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA) 3/14/08 COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE A – – 1.00 A1 0.20 – – A2 0.65 – – D 4.90 5.00 5.10 D1 3.90 BSC E 4.90 5.00 5.10 E1 3.90 BSC b 0.30 0.35 0.40 e 0.65 BSC TOP VIEW SIDE VIEW A1 BALL ID G F E D C B A 1 2 3 4 5 6 7 A A1 A2 D E 0.10 E1 D1 49 - Ø0.35 ± 0.05 e A1 BALL CORNER BOTTOM VIEW b e

No known Errata. 10.2 ATmega324PA Rev. F No known Errata. 10.3 ATmega644PA Rev. F No known Errata.

Please note that the referring page numbers in this section are referred to this document. The referring revision in this section are referring to the document revision. 11.1 Rev. 8152G- 11/09 11.2 Rev. 8152F- 10/09 11.3 Rev. 8152E- 08/09 11.4 Rev. 8152D- 08/09 1. Added ATmega1284P device and Updated the datasheet. 2. Updated Assembly code example in ”Watchdog Timer” on page 56. 1. Added Table on page 35, Capacitance for Low-frequency Oscillator. 2. Updated ordering information for 324PA. 1. Removed ”RAMPZ – Extended Z-pointer Register for ELPM/SPM” on page 15. 2. Updated ”EEARH and EEARL – The EEPROM Address Register” on page 24. 3. Updated ”Addressing the Flash During Self-Programming” on page 282, by removing RAMPZ. 4 Updated ”Serial Programming Pin Mapping” on page 309. 5. Updated ”Register Summary” on page 415, by removing RAMPZ register. 6. Updated ”Instruction Set Summary” on page 419, by removing ELPM mnemonics. 7. Updated ATmega164PA/324PA ”Ordering Information” on page 422, MCU replaced by MCH. 1. Updated ”Ordering Information” for ATmega644PA device on page 424. 2. Updated ”ATmega644PA Typical Characteristics” on page 390

11.6 Rev. 8152B- 02/09 1. Updated ”Features” on page 1 by inserting ATmega644PA device and updated the whole datasheet accordingly. 2. Updated ”Overview” on page 5. 3. Inserted ”Comparison Between ATmega164PA, and ATmega324PA” on page 6. 4. Updated all resgister description in ”AVR CPU Core” on page 10. 5. Updated “AVR Memories” section included all register description. 6. Updated ”Calibrated Internal RC Oscillator” on page 37. 7. Inserted ”ATmega164PA Boot Loader Parameters” on page 291. 8. Updated “Memory Programming” section included “Device and JTAG ID” and “Page Size” . 9. Inserted ”ATmega644PA DC Characteristics” on page 329. 10. Inserted ”ATmega644PA Typical Characteristics” on page 390. 11. Inserted “ATmega644PA” Ordering Information. 12. Updated ”Errata” on page 430. 1. Updated ”Features” on page 1 by inserting ATmega324PA device and updated the whole datasheet accordingly. 2. Updated ”Overview” on page 5. 3. Inserted ”Comparison Between ATmega164PA and ATmega324PA” on page 6. 4. Updated all resgister description in ”AVR CPU Core” on page 10. 5. Updated “AVR Memories” section included all register description. 6. Updated ”Calibrated Internal RC Oscillator” on page 37. 7. Inserted ”ATmega324PA Boot Loader Parameters” on page 289. 8. Updated “Memory Programming” section included “Device and JTAG ID” and “Page Size” . 9. Inserted ”ATmega324PA DC Characteristics” on page 327. 10. Inserted ”ATmega324PA Typical Characteristics” on page 338. 11. Inserted “ATmega324PA” Ordering Information. 12. Updated ”Errata” on page 402.

1. Initial revision (Based on the ATmega164P/324P/644P datasheet 8011K-AVR-09/08). 2. Changes done compared to ATmega164P/324P/644P datasheet 8011K-AVR-09/08: –New graphics in ”Typical Characteristics” on page 337 –New ”Ordering Information” on page 395

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