ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 87

• Manufacturer Part Number: ATMEGA645A-AU
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP
• Processor Series: ATmega
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 3
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.3.7
8285B–AVR–03/11
Alternate Functions of Port J
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Table 13-18. Overriding Signals for Alternate Functions in PH3:PH0
Port J is only present in ATmega3250A/3250PA/6450A/6450P. The alternate pin configuration is
as follows:
Table 13-19. Port J Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT30 – Port J, Bit 6
PCINT30, Pin Change Interrupt Source 30: The PE30 pin can serve as an external interrupt
source.
• PCINT29 – Port J, Bit 5
PCINT29, Pin Change Interrupt Source 29: The PE29 pin can serve as an external interrupt
source.
• PCINT28 – Port J, Bit 4
PCINT28, Pin Change Interrupt Source 28: The PE28 pin can serve as an external interrupt
source.
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1
PJ0
PH3/PCINT19
0
0
0
0
0
0
–
PCINT19 • PCIE0
0
PCINT19 INPUT
–
Alternate Function
PCINT30(Pin Change Interrupt30)
PCINT29(Pin Change Interrupt29)
PCINT28(Pin Change Interrupt28)
PCINT27(Pin Change Interrupt27)
PCINT26(Pin Change Interrupt26)
PCINT25(Pin Change Interrupt25)
PCINT24(Pin Change Interrupt26)
PH2/PCINT18
0
0
0
0
0
0
–
PCINT18 • PCIE0
0
PCINT18 INPUT
–
PH1/PCINT17
0
0
0
0
0
0
–
PCINT17 • PCIE0
0
PCINT17 INPUT
–
PH0/PCINT16
0
0
0
0
0
0
–
PCINT16 • PCIE0
0
PCINT16 INPUT
–
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