ATTINY85-15SZ View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATTINY85-15SZ

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

Atmel Corporation 

2.1 Block Diagram

Figure 2-1. Block Diagram

ATtiny25/45/85

8-BIT DATABUS

VCC

GND

PROGRAM

COUNTER

PROGRAM

FLASH

INSTRUCTION

REGISTER

INSTRUCTION

DECODER

CONTROL

LINES

PROGRAMMING

LOGIC

STACK

POINTER

SRAM

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

WATCHDOG

TIMER

MCU CONTROL

REGISTER

MCU STATUS

REGISTER

TIMER/

COUNTER0

TIMER/

COUNTER1

UNIVERSAL

SERIAL

INTERFACE

INTERRUPT

UNIT

DATA

EEPROM

CALIBRATED

INTERNAL

OSCILLATOR

TIMING AND

CONTROL

OSCILLATORS

DATA REGISTER

PORT B

DATA DIR.

REG.PORT B

ADC /

ANALOG COMPARATOR

PORT B DRIVERS

RESET

PB0-PB5

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.

3

7598H–AVR–07/09

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