ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 6

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2.3.9
2.3.10
2.3.11
6
ATmega164P/324P/644P
XTAL2
AVCC
AREF
Output from the inverting Oscillator amplifier.
AVCC is the supply voltage pin for Port F and the Analog-to-digital Converter. It should be exter-
nally connected to V
to V
This is the analog reference pin for the Analog-to-digital Converter.
CC
through a low-pass filter.
CC
, even if the ADC is not used. If the ADC is used, it should be connected
8011D–AVR–02/07