ATMEGA644PV-20AU Atmel, ATMEGA644PV-20AU Datasheet - Page 90
![IC MCU AVR 64K FLASH 44-TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA644PV-20AU
Manufacturer Part Number
ATMEGA644PV-20AU
Description
IC MCU AVR 64K FLASH 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644PV-20AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
Quantity
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8011O–AVR–07/10
Table 11-14. 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
TXEN1
0
TXEN1
1
TXEN1
TXD1
INT1 ENABLE
PCINT27 • PCIE3
1
INT1 INPUT
PCINT27 INPUT
–
PD2/INT0/RXD1/
PCINT26
PORTD2 • PUD
RXEN1
0
0
INT2 ENABLE
PCINT26 • PCIE3
1
INT0 INPUT
RXD1
PCINT26 INPUT
–
RXEN1
0
ATmega164P/324P/644P
PD1/TXD0/
PCINT25
TXEN0
0
TXEN0
1
TXEN0
TXD0
PCINT25 • PCIE3
1
PCINT25 INPUT
–
(1)
PD0/RXD0/
PCINT27
RXEN1
PORTD0 • PUD
RXEN1
0
0
0
PCINT24 • PCIE3
1
RXD0
PCINT24 INPUT
–
90
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