Features • High Performance, Low Power AVR® 8-Bit Microcontroller • Advanced RISC Architecture • • • • • • • • – 130 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 Non-volatile Program and Data Memories – In-System Self-Programmable Flash, Endurance: 10,000 Write/Erase Cycles 32K bytes – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation – EEPROM, Endurance: 100,000 Write/Erase Cycles 1K bytes – Internal SRAM 2K bytes – 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 Prescaler and Compare Mode – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Four PWM Channels – 8-channel, 10-bit ADC – Programmable Serial USART – Master/Slave SPI Serial Interface – Universal Serial Interface with Start Condition Detector – 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 Oscillator – External and Internal Interrupt Sources – Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby I/O and Packages – 54/69 Programmable I/O Lines – 64-lead TQFP, 64-pad QFN/MLF, and 100-lead TQFP Speed Grade: – ATmega325PV/ATmega3250PV: 0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V – ATmega325P/3250P: 0 - 10 MHz @ 2.7 - 5.5V, 0 - 10 MHz @ 4.5 - 5.5V Temperature range: – -40°C to 85°C Industrial Ultra-Low Power Consumption – Active Mode: 420µA at 1 MHz, 1.8V – Power-down Mode: 40 nA at 1.8V – Power-save Mode: 750 nA at 1.8V 8-bit Microcontroller with 32K Bytes In-System Programmable Flash ATmega325P/V ATmega3250P/V Preliminary Summary 8023AS–AVR–12/06 1. Pin Configurations Figure 1-1. Pinout ATmega3250P 2 AVCC AGND AREF PF0 (ADC0) PF1 (ADC1) PF2 (ADC2) PF3 (ADC3) PF4 (ADC4/TCK) PF5 (ADC5/TMS) PF6 (ADC6/TDO) PF7 (ADC7/TDI) DNC DNC PH7 (PCINT23) PH6 (PCINT22) PH5 (PCINT21) PH4 (PCINT20) DNC DNC GND VCC DNC PA0 PA1 PA2 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 TQFP DNC 1 75 PA3 (RXD/PCINT0) PE0 2 74 PA4 (TXD/PCINT1) PE1 3 73 PA5 (XCK/AIN0/PCINT2) PE2 4 72 PA6 (AIN1/PCINT3) PE3 5 71 PA7 (USCK/SCL/PCINT4) PE4 6 70 PG2 (DI/SDA/PCINT5) PE5 7 69 PC7 (DO/PCINT6) PE6 8 68 PC6 (CLKO/PCINT7) PE7 9 67 DNC VCC 10 66 PH3 (PCINT19) GND 11 65 PH2 (PCINT18) DNC 12 64 PH1 (PCINT17) (PCINT24) PJ0 13 63 PH0 (PCINT16) (PCINT25) PJ1 14 62 DNC DNC 15 61 DNC DNC 16 60 DNC DNC 17 59 DNC DNC 18 58 PC5 (SS/PCINT8) PB0 19 57 PC4 (SCK/PCINT9) PB1 20 56 PC3 (MOSI/PCINT10) PB2 21 55 PC2 (MISO/PCINT11) PB3 22 54 PC1 (OC0A/PCINT12) PB4 23 53 PC0 (OC1A/PCINT13) PB5 24 52 PG1 (OC1B/PCINT14) PB6 25 51 PG0 INDEX CORNER 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 (OC2A/PCINT15) PB7 DNC (T1) PG3 (T0) PG4 RESET/PG5 VCC GND (TOSC2) XTAL2 (TOSC1) XTAL1 DNC DNC (PCINT26) PJ2 (PCINT27) PJ3 (PCINT28) PJ4 (PCINT29) PJ5 (PCINT30) PJ6 DNC (ICP1) PD0 (INT0) PD1 PD2 PD3 PD4 PD5 PD6 PD7 ATmega3250 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P DNC 1 (RXD/PCINT0) PE0 2 AVCC GND AREF PF0 (ADC0) PF1 (ADC1) PF2 (ADC2) PF3 (ADC3) PF4 (ADC4/TCK) PF5 (ADC5/TMS) PF6 (ADC6/TDO) PF7 (ADC7/TDI) GND VCC PA0 PA1 PA2 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 Pinout ATmega325P 64 Figure 1-2. 48 PA3 47 PA4 INDEX CORNER (TXD/PCINT1) PE1 3 46 PA5 (XCK/AIN0/PCINT2) PE2 4 45 PA6 (AIN1/PCINT3) PE3 5 44 PA7 (USCK/SCL/PCINT4) PE4 6 43 PG2 (DI/SDA/PCINT5) PE5 7 42 PC7 (DO/PCINT6) PE6 8 (CLKO/PCINT7) PE7 9 40 PC5 (SS/PCINT8) PB0 10 39 PC4 1.1 PD7 32 29 PD4 PD6 31 28 PD3 PD5 30 27 33 PG0 PD2 16 26 (OC1B/PCINT14) PB6 25 34 PG1 (INT0) PD1 15 (ICP1) PD0 (OC1A/PCINT13) PB5 24 35 PC0 (TOSC1) XTAL1 14 23 (OC0A/PCINT12) PB4 22 36 PC1 GND 13 (TOSC2) XTAL2 (MISO/PCINT11) PB3 VCC 21 37 PC2 RESET/PG5 20 38 PC3 12 (T0) PG4 19 11 (T1) PG3 18 (SCK/PCINT9) PB1 (MOSI/PCINT10) PB2 (OC2A/PCINT15) PB7 17 Note: 41 PC6 ATmega325 The large center pad underneath the QFN/MLF packages is made of metal and internally connected to GND. It should be soldered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the package might loosen from the board. Disclaimer Typical values contained in this datasheet are based on simulations and characterization of other AVR microcontrollers manufactured on the same process technology. Min and Max values will be available after the device is characterized. 2. Overview The ATmega325P/3250P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega325P/3250P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 3 8023AS–AVR–12/06 Block Diagram GND Block Diagram PF0 - PF7 VCC PORTA DRIVERS PORTF DRIVERS DATA DIR. REG. PORTF DATA REGISTER PORTF PC0 - PC7 PA0 - PA7 PORTC DRIVERS DATA DIR. REG. PORTA DATA REGISTER PORTA XTAL2 Figure 2-1. XTAL1 2.1 DATA REGISTER PORTC DATA DIR. REG. PORTC 8-BIT DATA BUS AVCC AGND CALIB. OSC ADC INTERNAL OSCILLATOR AREF WATCHDOG TIMER ON-CHIP DEBUG PROGRAM FLASH SRAM MCU CONTROL REGISTER BOUNDARYSCAN INSTRUCTION REGISTER TIMING AND CONTROL TIMER/ COUNTERS GENERAL PURPOSE REGISTERS X PROGRAMMING LOGIC INSTRUCTION DECODER CONTROL LINES + - INTERRUPT UNIT ALU EEPROM STATUS REGISTER AVR CPU ANALOG COMPARATOR Z Y RESET DATA DIR. REG. PORTH DATA REGISTER PORTH JTAG TAP STACK POINTER DATA DIR. REG. PORTJ DATA REGISTER PORTJ PORTH DRIVERS PORTJ DRIVERS PJ0 - PJ6 PH0 - PH7 OSCILLATOR PROGRAM COUNTER USART UNIVERSAL SERIAL INTERFACE DATA REGISTER PORTE DATA DIR. REG. PORTE PORTE DRIVERS PE0 - PE7 SPI DATA REGISTER PORTB DATA DIR. REG. PORTB PORTB DRIVERS PB0 - PB7 DATA REGISTER PORTD DATA DIR. REG. PORTD PORTD DRIVERS PD0 - PD7 DATA REG. PORTG DATA DIR. REG. PORTG PORTG DRIVERS PG0 - PG4 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 conventional CISC microcontrollers. 4 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P The ATmega325P/3250P provides the following features: 32K bytes of In-System Programmable Flash with Read-While-Write capabilities, 1K bytes EEPROM, 2K byte SRAM, 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for Boundary-scan, On-chip Debugging support and programming, three flexible Timer/Counters with compare modes, internal and external interrupts, a serial programmable USART, Universal Serial Interface with Start Condition Detector, an 8-channel, 10-bit ADC, a programmable Watchdog Timer with internal Oscillator, an SPI serial port, and five software selectable power saving 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 Powersave mode, the asynchronous timer, allowing the user to maintain 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 consumption. The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip In-System re-Programmable (ISP) Flash allows the program memory to be reprogrammed In-System through an SPI serial interface, by a conventional non-volatile 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 ATmega325P/3250P is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega325P/3250P AVR is supported with a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators, and Evaluation kits. 2.2 Comparison between ATmega325P and ATmega3250P The ATmega325P and ATmega3250P differs only in memory sizes, pin count and pinout. Table 2-1 on page 5 summarizes the different configurations for the four devices. Table 2-1. Configuration Summary Device Flash EEPROM RAM General Purpose I/O Pins ATmega325P 32K bytes 1K bytes 2K bytes 54 ATmega3250P 32K bytes 1K bytes 2K bytes 69 5 8023AS–AVR–12/06 2.3 Pin Descriptions The following section describes the I/O-pin special functions. 2.3.1 VCC Digital supply voltage. 2.3.2 GND Ground. 2.3.3 Port A (PA7..PA0) Port A is 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. 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 has better driving capabilities than the other ports. Port B also serves the functions of various special features of the ATmega325P/3250P as listed on page 72. 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. 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 ATmega325P/3250P as listed on page 75. 2.3.7 Port E (PE7..PE0) Port E is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port E output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port E pins that are externally pulled low will source current if the pull-up 6 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P resistors are activated. The Port E pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port E also serves the functions of various special features of the ATmega325P/3250P as listed on page 76. 2.3.8 Port F (PF7..PF0) Port F serves as the analog inputs to the A/D Converter. Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used. Port pins can provide internal pull-up resistors (selected for each bit). The Port F output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port F pins that are externally pulled low will source current if the pull-up resistors are activated. The Port F pins are tri-stated when a reset condition becomes active, even if the clock is not running. If the JTAG interface is enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS), and PF4(TCK) will be activated even if a reset occurs. Port F also serves the functions of the JTAG interface. 2.3.9 Port G (PG5..PG0) Port G is a 6-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port G output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port G pins that are externally pulled low will source current if the pull-up resistors are activated. The Port G pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port G also serves the functions of various special features of the ATmega325P/3250P as listed on page 76. 2.3.10 Port H (PH7..PH0) Port H is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port H output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port H pins that are externally pulled low will source current if the pull-up resistors are activated. The Port H pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port H also serves the functions of various special features of the ATmega3250P as listed on page 76. 2.3.11 Port J (PJ6..PJ0) Port J is a 7-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port J output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port J pins that are externally pulled low will source current if the pull-up resistors are activated. The Port J pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port J also serves the functions of various special features of the ATmega3250P as listed on page 76. 7 8023AS–AVR–12/06 2.3.12 RESET Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in ”System and Reset Characterizations” on page 309. Shorter pulses are not guaranteed to generate a reset. 2.3.13 XTAL1 Input to the inverting Oscillator amplifier and input to the internal clock operating circuit. 2.3.14 XTAL2 Output from the inverting Oscillator amplifier. 2.3.15 AVCC AVCC is the supply voltage pin for Port F and the A/D Converter. It should be externally 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. 2.3.16 AREF This is the analog reference pin for the A/D Converter. 8 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 3. Resources A comprehensive set of development tools, application notes and datasheets are available for download on http://www.atmel.com/avr. 9 8023AS–AVR–12/06 4. About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. These code examples assume that the part specific header file is included before compilation. 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 documentation for more details. For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI” instructions must be replaced with instructions that allow access to extended I/O. Typically “LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”. 10 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 5. Register Summary Note: Address Name Registers with bold type only available in ATmega3250P. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (0xFF) Reserved - - - - - - - - Page (0xFE) Reserved - - - - - - - - (0xFD) Reserved - - - - - - - - (0xFC) Reserved - - - - - - - - (0xFB) Reserved - - - - - - - - (0xFA) Reserved - - - - - - - - (0xF9) Reserved - - - - - - - - (0xF8) Reserved - - - - - - - - (0xF7) Reserved - - - - - - - - (0xF6) Reserved - - - - - - - - (0xF5) Reserved - - - - - - - - (0xF4) Reserved - - - - - - - - (0xF3) Reserved - - - - - - - - (0xF2) Reserved - - - - - - - - (0xF1) Reserved - - - - - - - - (0xF0) Reserved - - - - - - - - (0xEF) Reserved - - - - - - - - (0xEE) Reserved - - - - - - - - (0xED) Reserved - - - - - - - - (0xEC) Reserved - - - - - - - - (0xEB) Reserved - - - - - - - - (0xEA) Reserved - - - - - - - - (0xE9) Reserved - - - - - - - - (0xE8) Reserved - - - - - - - - (0xE7) Reserved - - - - - - - - (0xE6) Reserved - - - - - - - - (0xE5) Reserved - - - - - - - - (0xE4) Reserved - - - - - - - - (0xE3) Reserved - - - - - - - - (0xE2) Reserved - - - - - - - - (0xE1) Reserved - - - - - - - - (0xE0) Reserved - - - - - - - - (0xDF) Reserved - - - - - - - - (0xDE) Reserved - - - - - - - - (0xDD) PORTJ - PORTJ6 PORTJ5 PORTJ4 PORTJ3 PORTJ2 PORTJ1 PORTJ0 89 (0xDC) DDRJ - DDJ6 DDJ5 DDJ4 DDJ3 DDJ2 DDJ1 DDJ0 89 89 (0xDB) PINJ - PINJ6 PINJ5 PINJ4 PINJ3 PINJ2 PINJ1 PINJ0 (0xDA) PORTH PORTH7 PORTH6 PORTH5 PORTH4 PORTH3 PORTH2 PORTH1 PORTH0 88 (0xD9) DDRH DDH7 DDH6 DDH5 DDH4 DDH3 DDH2 DDH1 DDH0 89 (0xD8) PINH PINH7 PINH6 PINH5 PINH4 PINH3 PINH2 PINH1 PINH0 89 (0xD7) Reserved - - - - - - - - (0xD6) Reserved - - - - - - - - (0xD5) Reserved - - - - - - - - (0xD4) Reserved - - - - - - - - (0xD3) Reserved - - - - - - - - (0xD2) Reserved - - - - - - - - (0xD1) Reserved - - - - - - - - (0xD0) Reserved - - - - - - - - (0xCF) Reserved - - - - - - - - (0xCE) Reserved - - - - - - - - (0xCD) Reserved - - - - - - - - (0xCC) Reserved - - - - - - - - (0xCB) Reserved - - - - - - - - (0xCA) Reserved - - - - - - - - (0xC9) Reserved - - - - - - - - (0xC8) Reserved - - - - - - - - (0xC7) Reserved - - - - - - - - (0xC6) UDR0 (0xC5) UBRR0H USART0 Data Register 183 USART0 Baud Rate Register High 187 11 8023AS–AVR–12/06 Address 12 Name (0xC4) UBRR0L (0xC3) Reserved Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 - - - Page USART0 Baud Rate Register Low - - - - - 187 (0xC2) UCSR0C - UMSEL0 UPM01 UPM00 USBS0 UCSZ01 UCSZ00 UCPOL0 185 (0xC1) UCSR0B RXCIE0 TXCIE0 UDRIE0 RXEN0 TXEN0 UCSZ02 RXB80 TXB80 184 (0xC0) UCSR0A RXC0 TXC0 UDRE0 FE0 DOR0 UPE0 U2X0 MPCM0 183 (0xBF) Reserved - - - - - - - - (0xBE) Reserved - - - - - - - - (0xBD) Reserved - - - - - - - - (0xBC) Reserved - - - - - - - - (0xBB) Reserved - - - - - - - - (0xBA) USIDR (0xB9) USISR USISIF USIOIF USIPF USIDC USICNT3 USICNT2 USICNT1 USICNT0 200 (0xB8) USICR USISIE USIOIE USIWM1 USIWM0 USICS1 USICS0 USICLK USITC 201 (0xB7) Reserved - - - - - - - - (0xB6) ASSR - - - EXCLK AS2 TCN2UB OCR2UB TCR2UB (0xB5) Reserved - - - - - - - - (0xB4) Reserved - - - - - - - - (0xB3) OCR2A Timer/Counter 2 Output Compare Register A 152 (0xB2) TCNT2 Timer/Counter2 152 (0xB1) Reserved - - - - - - - - (0xB0) TCCR2A FOC2A WGM20 COM2A1 COM2A0 WGM21 CS22 CS21 CS20 (0xAF) Reserved - - - - - - - - USI Data Register 200 152 150 (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 (0x8A) OCR1BL Timer/Counter1 Output Compare Register B Low 133 (0x89) OCR1AH Timer/Counter1 Output Compare Register A High 133 (0x88) OCR1AL Timer/Counter1 Output Compare Register A Low 133 (0x87) ICR1H Timer/Counter1 Input Capture Register High 134 (0x86) ICR1L Timer/Counter1 Input Capture Register Low 134 133 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page (0x85) TCNT1H Timer/Counter1 High (0x84) TCNT1L Timer/Counter1 Low (0x83) Reserved - - - (0x82) TCCR1C FOC1A FOC1B - - - - - - 132 (0x81) TCCR1B ICNC1 ICES1 - WGM13 WGM12 CS12 CS11 CS10 131 129 - - 133 133 - - - (0x80) TCCR1A COM1A1 COM1A0 COM1B1 COM1B0 - - WGM11 WGM10 (0x7F) DIDR1 - - - - - - AIN1D AIN0D 206 (0x7E) DIDR0 ADC7D ADC6D ADC5D ADC4D ADC3D ADC2D ADC1D ADC0D 223 (0x7D) Reserved - - - - - - - - (0x7C) ADMUX REFS1 REFS0 ADLAR MUX4 MUX3 MUX2 MUX1 MUX0 219 (0x7B) ADCSRB - ACME - - - ADTS2 ADTS1 ADTS0 205/223 (0x7A) ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 (0x79) ADCH (0x78) ADCL (0x77) Reserved - - - - - - - - (0x76) Reserved - - - - - - - - (0x75) Reserved - - - - - - - - (0x74) Reserved - - - - - - - - (0x73) PCMSK3 - PCINT30 PCINT29 PCINT28 PCINT27 PCINT26 PCINT25 PCINT24 (0x72) Reserved - - - - - - - - (0x71) Reserved - - - - - - - - (0x70) TIMSK2 - - - - - - OCIE2A TOIE2 (0x6F) TIMSK1 - - ICIE1 - - OCIE1B OCIE1A TOIE1 134 (0x6E) TIMSK0 - - - - - - OCIE0A TOIE0 105 (0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 63 (0x6C) PCMSK1 PCINT15 PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 63 (0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 63 (0x6A) Reserved - - - - - - - - (0x69) EICRA - - - - - - ISC01 ISC00 (0x68) Reserved - - - - - - - - (0x67) Reserved - - - - - - - - (0x66) OSCCAL (0x65) Reserved - - - - - - - - ADC Data Register High 221 222 ADC Data Register Low 222 Oscillator Calibration Register [CAL7..0] 63 153 60 36 (0x64) PRR - - - - PRTIM1 PRSPI PSUSART0 PRADC (0x63) Reserved - - - - - - - - 45 (0x62) Reserved - - - - - - - - (0x61) CLKPR CLKPCE - - - CLKPS3 CLKPS2 CLKPS1 CLKPS0 37 (0x60) WDTCR - - - WDCE WDE WDP2 WDP1 WDP0 52 I T H S V N Z C 0x3F (0x5F) SREG 0x3E (0x5E) SPH 0x3D (0x5D) SPL 0x3C (0x5C) Reserved - - - - - - - - 0x3B (0x5B) Reserved - - - - - - - - 0x3A (0x5A) Reserved - - - - - - - - 0x39 (0x59) Reserved - - - - - - - - 0x38 (0x58) Reserved - - - - - - - - 0x37 (0x57) SPMCSR SPMIE RWWSB - RWWSRE BLBSET PGWRT PGERS SPMEN 270 0x36 (0x56) Reserved 57/86/256 Stack Pointer High 13 15 Stack Pointer Low 15 0x35 (0x55) MCUCR JTD BODS BODSE PUD - - IVSEL IVCE 0x34 (0x54) MCUSR - - - JTRF WDRF BORF EXTRF PORF 51 0x33 (0x53) SMCR - - - - SM2 SM1 SM0 SE 44 0x32 (0x52) Reserved - - - - - - - - 0x31 (0x51) OCDR IDRD/OCDR7 OCDR6 OCDR5 OCDR4 OCDR3 OCDR2 OCDR1 OCDR0 229 0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 205 0x2F (0x4F) Reserved - - - - - - - - - - - - SPI2X 163 MSTR CPOL CPHA SPR1 SPR0 161 0x2E (0x4E) SPDR 0x2D (0x4D) SPSR SPIF WCOL - SPI Data Register 0x2C (0x4C) SPCR SPIE SPE DORD 0x2B (0x4B) GPIOR2 General Purpose I/O Register 0x2A (0x4A) GPIOR1 General Purpose I/O Register 0x29 (0x49) Reserved - - - 0x28 (0x48) Reserved - - - 0x27 (0x47) OCR0A 163 27 27 - - - - - - - - - - Timer/Counter0 Output Compare A 105 13 8023AS–AVR–12/06 Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 - - - - COM0A0 WGM01 CS02 CS01 CS00 103 - - - PSR2 PSR10 106/154 - - 0x26 (0x46) TCNT0 0x25 (0x45) Reserved - - - - 0x24 (0x44) TCCR0A FOC0A WGM00 COM0A1 0x23 (0x43) GTCCR TSM - - 0x22 (0x42) EEARH - - - 0x21 (0x41) EEARL EEPROM Address Register Low 0x20 (0x40) EEDR EEPROM Data Register 0x1F (0x3F) EECR Page Timer/Counter0 - - - - 105 EERIE EEPROM Address Register High 23 23 23 EEMWE EEWE EERE 24 0x1E (0x3E) GPIOR0 0x1D (0x3D) EIMSK PCIE3 PCIE2 PCIE1 PCIE0 - - - INT0 61 0x1C (0x3C) EIFR PCIF3 PCIF2 PCIF1 PCIF0 - - - INTF0 62 0x1B (0x3B) Reserved - - - - - - - - 0x1A (0x3A) Reserved - - - - - - - - 0x19 (0x39) Reserved - - - - - - - - 0x18 (0x38) Reserved - - - - - - - - 0x17 (0x37) TIFR2 - - - - - - OCF2A TOV2 154 0x16 (0x36) TIFR1 - - ICF1 - - OCF1B OCF1A TOV1 134 0x15 (0x35) TIFR0 - - - - - - OCF0A TOV0 106 0x14 (0x34) PORTG - - - PORTG4 PORTG3 PORTG2 PORTG1 PORTG0 88 0x13 (0x33) DDRG - - - DDG4 DDG3 DDG2 DDG1 DDG0 88 0x12 (0x32) PING 0x11 (0x31) PORTF General Purpose I/O Register 28 - - PING5 PING4 PING3 PING2 PING1 PING0 88 PORTF7 PORTF6 PORTF5 PORTF4 PORTF3 PORTF2 PORTF1 PORTF0 88 0x10 (0x30) DDRF DDF7 DDF6 DDF5 DDF4 DDF3 DDF2 DDF1 DDF0 88 0x0F (0x2F) PINF PINF7 PINF6 PINF5 PINF4 PINF3 PINF2 PINF1 PINF0 88 87 0x0E (0x2E) PORTE PORTE7 PORTE6 PORTE5 PORTE4 PORTE3 PORTE2 PORTE1 PORTE0 0x0D (0x2D) DDRE DDE7 DDE6 DDE5 DDE4 DDE3 DDE2 DDE1 DDE0 87 0x0C (0x2C) PINE PINE7 PINE6 PINE5 PINE4 PINE3 PINE2 PINE1 PINE0 88 0x0B (0x2B) PORTD PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0 87 0x0A (0x2A) DDRD DDD7 DDD6 DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 87 87 0x09 (0x29) PIND PIND7 PIND6 PIND5 PIND4 PIND3 PIND2 PIND1 PIND0 0x08 (0x28) PORTC PORTC7 PORTC6 PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0 87 0x07 (0x27) DDRC DDC7 DDC6 DDC5 DDC4 DDC3 DDC2 DDC1 DDC0 87 0x06 (0x26) PINC 0x05 (0x25) PORTB 0x04 (0x24) DDRB DDB7 DDB6 DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 86 0x03 (0x23) PINB PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 86 0x02 (0x22) PORTA PORTA7 PORTA6 PORTA5 PORTA4 PORTA3 PORTA2 PORTA1 PORTA0 86 0x01 (0x21) DDRA DDA7 DDA6 DDA5 DDA4 DDA3 DDA2 DDA1 DDA0 86 0x00 (0x20) PINA PINA7 PINA6 PINA5 PINA4 PINA3 PINA2 PINA1 PINA0 86 Notes: 14 PINC7 PINC6 PINC5 PINC4 PINC3 PINC2 PINC1 PINC0 87 PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 86 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written. 2. I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these registers, 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, unlike most other AVRs, the CBI and SBI instructions will only operate on the specified bit, and can therefore be used on registers containing such Status Flags. 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 0x00 - 0x3F must be used. When addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these addresses. The ATmega325P/3250P 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 0x60 - 0xFF in SRAM, only the ST/STS/STD and LD/LDS/LDD instructions can be used. ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 6. Instruction Set Summary 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) << Z,C 2 FMULS Rd, Rr Fractional Multiply Signed Z,C 2 FMULSU Rd, Rr Fractional Multiply Signed with Unsigned Z,C 2 1 R1:R0 ← (Rd x Rr) << 1 R1:R0 ← (Rd x Rr) << 1 BRANCH INSTRUCTIONS RJMP k IJMP Relative Jump PC ← PC + k + 1 None 2 Indirect Jump to (Z) PC ← Z None 2 3 JMP k Direct Jump PC ← k None RCALL k Relative Subroutine Call PC ← PC + k + 1 None 3 Indirect Call to (Z) PC ← Z None 3 Direct Subroutine Call PC ← k None 4 Subroutine Return PC ← STACK None 4 ICALL CALL k RET RETI CPSE Rd,Rr Interrupt Return PC ← STACK I Compare, Skip if Equal if (Rd = Rr) PC ← PC + 2 or 3 None 4 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 SBRC Rr, b Skip if Bit in Register Cleared if (Rr(b)=0) PC ← PC + 2 or 3 None 1 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 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 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 1/2 BREQ k Branch if Equal if (Z = 1) then PC ← PC + k + 1 None 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 1/2 BRCC k Branch if Carry Cleared if (C = 0) then PC ← PC + k + 1 None 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 15 8023AS–AVR–12/06 Mnemonics Operands Description Operation Flags #Clocks BRVC k Branch if Overflow Flag is Cleared 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 CLH Set Half Carry Flag in SREG Clear Half Carry Flag in SREG H←1 H←0 H H 1 1 DATA TRANSFER INSTRUCTIONS MOV Rd, Rr Move Between Registers 1 Rd, Rr Copy Register Word Rd ← Rr Rd+1:Rd ← Rr+1:Rr None MOVW 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 2 ST X, Rr Store Indirect (X) ← Rr None 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 2 ST Y, Rr Store Indirect (Y) ← Rr None 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 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 Store Program Memory (Z) ← R1:R0 None - LPM SPM IN Rd, P In Port Rd ← P None 1 OUT P, Rr Out Port P ← Rr None 1 16 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P Mnemonics Operands Description Operation Flags #Clocks PUSH Rr Push Register on Stack 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 BREAK Watchdog Reset Break (see specific descr. for WDR/timer) For On-chip Debug Only None None 1 N/A 17 8023AS–AVR–12/06 7. Ordering Information 7.1 ATmega325P Speed (MHz)(3) Power Supply 10 1.8 - 5.5V ATmega325PV-10AU ATmega325PV-10MU 64A 64M1 Industrial (-40°C to 85°C) 20 2.7 - 5.5V ATmega325P-20AU ATmega325P-20MU 64A 64M1 Industrial (-40°C to 85°C) Notes: Ordering Code(2) Package Type(1) Operational Range 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information 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 Figure 25-1 on page 307 and Figure 25-2 on page 307. Package Type 64A 64-lead, 14 x 14 x 1.0 mm, Thin Profile Plastic Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0 mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) 18 ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 7.2 ATmega3250P Speed (MHz)(3) Power Supply 10 1.8 - 5.5V ATmega3250PV-10AU 100A Industrial (-40°C to 85°C) 20 2.7 - 5.5V ATmega3250P-20AU 100A Industrial (-40°C to 85°C) Notes: Ordering Code(2) Package Type(1) Operational Range 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information 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 Figure 25-1 on page 307 and Figure 25-2 on page 307. Package Type 100A 100-lead, 14 x 14 x 1.0 mm, 0.5 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) 19 8023AS–AVR–12/06 8. Packaging Information 8.1 64A PIN 1 B PIN 1 IDENTIFIER E1 e E D1 D C 0˚~7˚ A1 A2 A L COMMON DIMENSIONS (Unit of Measure = mm) Notes: 1. This package conforms to JEDEC reference MS-026, Variation AEB. 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. SYMBOL MIN NOM MAX A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 15.75 16.00 16.25 D1 13.90 14.00 14.10 E 15.75 16.00 16.25 E1 13.90 14.00 14.10 B 0.30 – 0.45 C 0.09 – 0.20 L 0.45 – 0.75 e NOTE Note 2 Note 2 0.80 TYP 10/5/2001 R 20 2325 Orchard Parkway San Jose, CA 95131 TITLE 64A, 64-lead, 14 x 14 mm Body Size, 1.0 mm Body Thickness, 0.8 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) DRAWING NO. REV. 64A B ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 8.2 64M1 D Marked Pin# 1 ID E C SEATING PLANE A1 TOP VIEW A K 0.08 C L Pin #1 Corner D2 1 2 3 Option A SIDE VIEW Pin #1 Triangle COMMON DIMENSIONS (Unit of Measure = mm) E2 Option B Pin #1 Chamfer (C 0.30) SYMBOL MIN NOM MAX A 0.80 0.90 1.00 – 0.02 0.05 0.18 0.25 0.30 A1 b K Option C b e Pin #1 Notch (0.20 R) BOTTOM VIEW Note: 1. JEDEC Standard MO-220, (SAW Singulation) Fig. 1, VMMD. 2. Dimension and tolerance conform to ASMEY14.5M-1994. D 8.90 9.00 9.10 D2 5.20 5.40 5.60 E 8.90 9.00 9.10 E2 5.20 5.40 5.60 e NOTE 0.50 BSC L 0.35 0.40 0.45 K 1.25 1.40 1.55 5/25/06 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 64M1, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm, 5.40 mm Exposed Pad, Micro Lead Frame Package (MLF) DRAWING NO. 64M1 REV. G 21 8023AS–AVR–12/06 8.3 100A PIN 1 B PIN 1 IDENTIFIER E1 e E D1 D C 0˚~7˚ A1 A2 A L COMMON DIMENSIONS (Unit of Measure = mm) Notes: 1. This package conforms to JEDEC reference MS-026, Variation AED. 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 0.08 mm maximum. SYMBOL MIN NOM MAX A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 15.75 16.00 16.25 D1 13.90 14.00 14.10 E 15.75 16.00 16.25 E1 13.90 14.00 14.10 B 0.17 – 0.27 C 0.09 – 0.20 L 0.45 – 0.75 e NOTE Note 2 Note 2 0.50 TYP 10/5/2001 R 22 2325 Orchard Parkway San Jose, CA 95131 TITLE 100A, 100-lead, 14 x 14 mm Body Size, 1.0 mm Body Thickness, 0.5 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) DRAWING NO. 100A REV. C ATmega325P/3250P 8023AS–AVR–12/06 ATmega325P/3250P 9. Errata 9.1 ATmega325P rev. A • Interrupts may be lost when writing the timer registers in the asynchronous timer. 1. Interrupts may be lost when writing the timer registers in the asynchronous timer. If one of the timer registers which is synchronized to the asynchronous timer2 clock is written in the cycle before a overflow interrupt occurs, the interrupt may be lost. Problem Fix/Workoround Always check that the Timer2 Timer/Counter register, TCNT2, does not have the value 0xFF before writing the Timer2 Control Register, TCCR2, or Output Compare Register, OCR2. 9.2 ATmega3250P rev. A • Interrupts may be lost when writing the timer registers in the asynchronous timer. 1. Interrupts may be lost when writing the timer registers in the asynchronous timer. If one of the timer registers which is synchronized to the asynchronous timer2 clock is written in the cycle before a overflow interrupt occurs, the interrupt may be lost. Problem Fix/Workoround Always check that the Timer2 Timer/Counter register, TCNT2, does not have the value 0xFF before writing the Timer2 Control Register, TCCR2, or Output Compare Register, OCR2. 23 8023AS–AVR–12/06 10. Datasheet Revision History Please note that the referring page numbers in this section are referring to this document.The referring revision in this section are referring to the document revision. 10.1 Rev.8023A – 12/06 1. 24 Initial version. 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