Datasheet

5
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
1.1.9 ADC7:6 (TQFP and QFN Package Only)
In the TQFP and QFN package, ADC7:6 serve as analog inputs to the A/D converter. These pins are powered from the
analog supply and serve as 10-bit ADC channels.
2. Overview
The Atmel
®
ATmega48PA/88PA/168PA is a low-power CMOS 8-bit microcontroller based on the AVR
®
enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the Atmel ATmega48PA/88PA/168PA achieves
throughputs approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing
speed.
2.1 Block Diagram
Figure 2-1. Block Diagram
Power
Supervision
POR/ BOD
and
RESET
Oscillator
Circuits/
Clock
Generation
Watchdog
Timer
Watchdog
Oscillator
Program
Logic
debugWIRE
AVR CPU
EEPROM
DATA BUS
Flash
GND VCC
A/D Conv.16 bit T/C 18 bit T/C 0
Internal
Bandgap
Analog
Comp.
8 bit T/C 2
USART 0 SPI TWI
2
6
PORT D (8) PORT B (8) PORT C (7)
SRAM
AVCC
AREF
GND
RESET
XTAL[1..2]
PD[..7] PB[0..7] PC[0..6] ADC[6..7]