ATTINY20 データシートの表示（PDF） - Atmel Corporation

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ATTINY20

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

Atmel Corporation 

2. Overview

ATtiny20 is a low-power CMOS 8-bit microcontroller based on the compact AVR enhanced RISC architecture. By

executing powerful instructions in a single clock cycle, the ATtiny20 achieves throughputs approaching 1 MIPS per MHz

allowing the system designer to optimize power consumption versus processing speed.

Figure 2-1. Block Diagram

VCC

RESET

PROGRAMMING

LOGIC

PROGRAM

FLASH

INSTRUCTION

REGISTER

INSTRUCTION

DECODER

CONTROL

LINES

ISP

INTERFACE

PROGRAM

COUNTER

STACK

POINTER

SRAM

INTERRUPT

UNIT

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

DATA REGISTER

PORT A

DIRECTION

REG. PORT A

DRIVERS

PORT A

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

RESET FLAG

REGISTER

MCU STATUS

REGISTER

TIMER/

COUNTER0

TIMER/

COUNTER1

SPI

TWI

8-BIT DATA BUS

CALIBRATED

OSCILLATOR

TIMING AND

CONTROL

ANALOG

COMPARATOR

ADC

DATA REGISTER

PORT B

DIRECTION

REG. PORT B

DRIVERS

PORT B

PA[7:0]

GND

PB[3:0]

ATtiny20 [DATASHEET]

5

Atmel-8235F-AVR-ATtiny20-Datasheet_09/2014

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