Integrated Circuits (ICs)

ATTINY43U-SUR

Obsolete

Microchip Technology

IC MCU 8BIT 4KB FLASH 20SOIC

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DocumentsDatasheet ATTINY43U Datasheet

Integrated Circuits (ICs)

ATTINY43U-SUR

Obsolete

Microchip Technology

IC MCU 8BIT 4KB FLASH 20SOIC

Deep-Dive with AI

DocumentsDatasheet ATTINY43U Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	ATTINY43U-SUR

Connectivity	USI
Core Processor	AVR
Core Size	8-Bit
Data Converters [custom]	10
Data Converters [custom]	4
EEPROM Size [custom]	8
EEPROM Size [custom]	64
Mounting Type	Surface Mount
Number of I/O	16
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Oscillator Type	Internal
Package / Case	20-SOIC
Package / Case [y]	0.295 in
Package / Case [y]	7.5 mm
Peripherals	PWM, WDT, Brown-out Detect/Reset, POR, Temp Sensor
Program Memory Size	4 KB
Program Memory Type	FLASH
RAM Size	256 x 8
Speed	8 MHz
Supplier Device Package	20-SOIC
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	1.8 V

ATtiny43U Series

Part	Speed	Data Converters [custom]	Data Converters [custom]	Oscillator Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Connectivity	Peripherals	EEPROM Size [custom]	EEPROM Size [custom]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Package / Case	Package / Case [y]	Package / Case [y]	Program Memory Type	Core Size	Program Memory Size	Number of I/O	RAM Size	Core Processor
Microchip Technology ATTINY43U-SUR	8 MHz	10	4	Internal	20-SOIC	85 °C	-40 °C	Surface Mount	USI	Brown-out Detect/Reset POR PWM Temp Sensor WDT	8	64	1.8 V	5.5 V	20-SOIC	0.295 in	7.5 mm	FLASH	8-Bit	4 KB	16	256 x 8	AVR
Microchip Technology ATTINY43U-MUR	8 MHz	10	4	Internal	20-QFN-EP (4x4)	85 °C	-40 °C	Surface Mount	USI	Brown-out Detect/Reset POR PWM Temp Sensor WDT	8	64	1.8 V	5.5 V	20-WFQFN Exposed Pad			FLASH	8-Bit	4 KB	16	256 x 8	AVR

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Digi-Reel®	1	$ 2.56

Description

General part information

ATtiny43U Series

The high-performance, ultra-low voltage 8-bit AVR® RISC-based microcontroller combines 4 KB Flash memory, 64B EEPROM, 256B SRAM, 16 general purpose I/O lines, 32 general purpose working registers, two 8-bit timer/counters with two PWM channels, internal and external interrupts, a 4-channel 10-bit A/D converter, a universal serial interface (USI), programmable watchdog timer with internal oscillator, internally calibrated oscillator, and three software selectable power saving modes.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching one MIPS per MHz, balancing power consumption and processing speed.

[AVR188: Design Guidelines for ATtiny43U](https://www.microchip.com/en-us/application-notes/an8206)