ATTINY25V datasheet(3/222 Pages) ATMEL

Part #	ATTINY25V

Description	8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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3

2586J–AVR–12/06

ATtiny25/45/85

2.

Overview

The ATtiny25/45/85 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 ATtiny25/45/85

achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize

power consumption 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

PROGRAM

COUNTER

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

STACK

POINTER

PROGRAM

FLASH

SRAM

MCU CONTROL

REGISTER

GENERAL

PURPOSE

REGISTERS

INSTRUCTION

REGISTER

TIMER/

COUNTER0

SERIAL

UNIVERSAL

INTERFACE

TIMER/

COUNTER1

INSTRUCTION

DECODER

DATA DIR.

REG.PORT B

DATA REGISTER

PORT B

PROGRAMMING

LOGIC

TIMING AND

CONTROL

MCU STATUS

REGISTER

STATUS

REGISTER

ALU

PORT B DRIVERS

PB0-PB5

VCC

GND

CONTROL

LINES

8-BIT DATABUS

Z

ADC /

ANALOG COMPARATOR

INTERRUPT

UNIT

DATA

EEPROM

CALIBRATED

OSCILLATORS

Y

X

RESET

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