Datasheet

5.1.4. VFBGA
6
7
VCC
XTAL1
PD02
PB04
PB05
XTAL2
PD01
PD03
PD04
PB02
PB03
PB07
PD00
PD05
PD06
VCC
PB00
PB01
PD07
PC00
VCC
PC05
PC02
PC01
PA06
PA07
PC07
PC04
PC03
AREF
AVCC
PC06
Programming/debug
5.2. Pin Descriptions
5.2.1. VCC
Digital supply voltage.
5.2.2. GND
Ground.
5.2.3. Port A (PA[7:0])
This port serves as analog inputs to the Analog-to-digital Converter.
This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.
The output buffers have symmetrical drive characteristics, with both high sink and source capability. As
inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port
pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Atmel ATmega164A [DATASHEET]
Atmel-42712C-ATmega164A_Datasheet_Summary-10/2016
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