ATtiny88 datasheet(5/266 Pages) ATMEL

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8008C–AVR–03/09

ATtiny48/88

Overview

The ATtiny48/88 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 ATtiny48/88 achieves

throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power con-

sumption versus processing speed.

2.1

Block Diagram

Figure 2-1.

Block Diagram

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 independent

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 con-

ventional CISC microcontrollers.

PORT C (8)

PORT B (8)

PORT D (8)

16bit T/C 1

8bit T/C 0

A/D Conv.

Internal

Bandgap

Analog

Comp.

SPI

TWI

SRAM

Flash

EEPROM

Watchdog

Oscillator

Watchdog

Timer

Oscillator

Circuits /

Clock

Generation

Power

Supervision

POR / BOD &

RESET

Program

Logic

debugWIRE

PA[0..3] (in TQFP and MLF)

PC[0..7]

PB[0..7]

PD[0..7]

RESET

CLKI

CPU

PORT A (4)

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