ATMEGA644-20AU vs ATMEGA103L-4AC

This in-depth comparison of the ATMEGA644-20AU and ATMEGA103L-4AC provides valuable insights into their specifications and key features. We cover important factors in detail, including RoHS compliance, REACH status, series, mounting style, package type, and other relevant characteristics. Presenting the differences side by side simplifies component selection, making it easier for you to select the best option for your specific application.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Parts at a glance

Part A

ATMEGA644-20AU

Microchip Technology

Lifecycle
Active
Stock
1317 PCS
Package
TQFP-44
Series
Embedded - Microcontrollers
+BOM RFQ
Part B

ATMEGA103L-4AC

Microchip Technology

Lifecycle
Active
Stock
7158 PCS
Package
TQFP-64
Series
Embedded - Microcontrollers
+BOM RFQ

Need help validating a replacement?

Send your BOM and application constraints for technical and sourcing review.

RFQ Contact technical support

Full specification comparison

Use manufacturer datasheets as the final authority.

Specification ATMEGA644-20AU ATMEGA103L-4AC
Supplier - Microchip Technology
Series AVR® ATmega AVR® ATmega
Part Status Active Obsolete
Core Processor AVR AVR
Core Size 8-Bit 8-Bit
Speed 20MHz 4MHz
Connectivity I²C, SPI, UART/USART SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT POR, PWM, WDT
Number of I/O 32 32
Program Memory Size 64KB (32K x 16) 128KB (64K x 16)
Program Memory Type FLASH FLASH
EEPROM Size 2K x 8 4K x 8
RAM Size 4K x 8 4K x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V 2.7V ~ 3.6V
Data Converters A/D 8x10b A/D 8x10b
Oscillator Type Internal Internal
Operating Temperature -40°C ~ 85°C (TA) 0°C ~ 70°C
Mounting Type Surface Mount Surface Mount
Compare RFQ