ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 5

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

2. Overview
2.1
9223B–AVR–09/11
Block Diagram
The Atmel
the AVR enhanced RISC architecture. By executing powerful instructions in a single clock
cycle, the Atmel ATmega48PA/88PA/168PA achieves throughputs approaching 1 MIPS per-
MHz allowing the system designer to optimize power consumption versus processing speed.
Figure 2-1.
The AVR core combines a rich instruction set with 32 general purpose working registers. All
the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two inde-
pendent registers to be accessed in one single instruction executed in one clock cycle. The
resulting architecture is more code efficient while achieving throughputs up to ten times faster
than conventional CISC microcontrollers.
Atmel ATmega48PA/88PA/168PA [Preliminary]
®
ATmega48PA/88PA/168PA is a low-power CMOS 8-bit microcontroller based on
Block Diagram
Generation
PORT D (8)
Watchdog
Watchdog
Oscillator
Oscillator
8bit T/C 0
8bit T/C 2
USART 0
Circuits /
EEPROM
Timer
Clock
PD[0..7]
POR / BOD &
Supervision
PORT B (8)
16bit T/C 1
Analog
Power
RESET
Comp.
Flash
PB[0..7]
SPI
CPU
debugWIRE
PORT C (7)
A/D Conv.
Bandgap
PROGRAM
Internal
SRAM
PC[0..6]
LOGIC
TWI
6
ADC[6..7]
2
AVCC
XTAL[1..2]
AREF
GND
RESET
5