ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 89

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7674F–AVR–09/09
Table 12-14. Overriding Signals for Alternate Functions in PD3:PD0
Note:
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
1. When enabled, the 2-wire Serial Interface enables Slew-Rate controls on the output pins PD0
and PD1. This is not shown in this table. In addition, spike filters are connected between the
AIO outputs shown in the port figure and the digital logic of the TWI module.
PD3/INT1/TXD1/
PCINT27
0
0
0
0
0
0
INT1 ENABLE
PCINT27 • PCIE3
1
INT1 INPUT
PCINT27 INPUT
–
PD2/INT0/RXD1/
PCINT26
PORTD2 • PUD
RXEN1
0
0
0
INT2 ENABLE
PCINT26 • PCIE3
1
INT0 INPUT
PCINT27 INPUT
–
ATmega164P/324P/644P
PD1/TXD0/
PCINT25
TXEN
PORTD1 • PUD
TXEN
SDA_OUT
TWEN
0
INT1 ENABLE
PCINT25 • PCIE3
1
TXD
PCINT25 INPUT
–
(1)
PD0/RXD0/
PCINT27
RXEN
PORTD0 • PUD
RXEN
SCL_OUT
TWEN
0
INT0 ENABLE
PCINT24 • PCIE3
1
RXD
PCINT24 INPUT
–
89