Datasheet

ATmega48/88/168 Automotive [DATASHEET]
7530K–AVR–07/14
4
2. Overview
The Atmel
®
ATmega48/88/168 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 ATmega48/88/168 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 to 2]
PD[0 to 7] PB[0 to 7] PC[0 to 6] ADC[6 to 7]