ATTINY43U View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATTINY43U

8-bit Microcontroller with 4K Bytes In-System Programmable Flash and Boost Converter

Atmel Corporation 

1. Pin Configurations

Figure 1-1. Pinout of ATtiny43U

SOIC

(T0/PCINT8) PB0 1

(OC0A/PCINT9) PB1 2

(OC0B/PCINT10) PB2 3

(T1/CLKO/PCINT11) PB3 4

(DI/OC1A/PCINT12) PB4 5

(DO/OC1B/PCINT13) PB5 6

(USCK/SCL/PCINT14) PB6 7

(INT0/PCINT15) PB7 8

VCC 9

GND 10

20 PA7 (RESET/dW/PCINT7)

19 PA6 (CLKI/PCINT6)

18 PA5 (AIN1/PCINT5)

17 PA4 (AIN0/PCINT4)

16 PA3 (ADC3/PCINT3)

15 PA2 (ADC2/PCINT2)

14 PA1 (ADC1/PCINT1)

13 PA0 (ADC0/PCINT0)

12 VBAT

11 LSW

QFN/MLF Top View

(OC0B/PCINT9) PB2 1

(T1/CLKO/PCINT11) PB3 2

(DI/OC1A/PCINT12) PB4 3

(DO/OC1B/PCINT13) PB5 4

(USCK/SCL/PCINT14) PB6 5

15 PA4 (AIN0/PCINT4)

14 PA3 (ADC3/PCINT3)

13 PA2 (ADC2/PCINT2)

12 PA1 (ADC1/PCINT1)

11 PA0 (ADC0/PCINT0)

NOTE: Bottom pad should

be Soldered to ground.

1.1 Pin Descriptions

1.1.1

VCC

Supply voltage.

1.1.2 GND

Ground.

1.1.3

Port A (PA7:PA0)

Port A is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port A output buffers have symmetrical drive characteristics with both high sink and source

2 ATtiny43U

8048C–AVR–02/12

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