Atmel part numbers

Atmel (AVR ATmega/ATtiny, SAM Arm MCUs, AT24/AT25 EEPROM, CryptoAuthentication) was acquired by Microchip Technology in 2016.

Atmel is now Microchip Technology (2016). We quote Atmel parts — current, obsolete and end-of-life — and parts that carry older Atmel markings. See also all Microchip Technology part numbers.

5,159 Atmel heritage part numbers

Part-number families from Atmel, listed under their current manufacturer.

Part numberManufacturerTypePackageKey specs
AT89C51CC02UA-SISUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-28(11.5x11.5) 40MHz51 Series
AT89C51CC02UA-TISUM Microchip Technology Microcontrollers (MCU/MPU/SOC) SOIC-28-300mil 40MHz51 Series
AT89C51CC03CA-RDTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-64(10x10) 40MHz51 Series
AT89C51CC03CA-S3SUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-52(19.2x19.2) 40MHz51 Series
AT89C51CC03CA-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51CC03UA-RDTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) LQFP-64(10x10) 40MHz51 Series
AT89C51CC03UA-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 40MHz51 Series
AT89C51CC03UA-S3SUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-52(19.2x19.2) 40MHz51 Series
AT89C51CC03UA-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51ED2-RDRUM Microchip Technology Microcontrollers (MCU/MPU/SOC) QFP-64(10x10) 60MHz51 Series
AT89C51ED2-RDTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) QFP-64(10x10) 60MHz51 Series
AT89C51ED2-RLRUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51ED2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) QFP-44(10x10) 60MHz51 Series
AT89C51ED2-SMSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-68(24.2x24.2) 60MHz51 Series
AT89C51IC2-RLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) LQFP-44(10x10) 40MHz51 Series
AT89C51IC2-RLRUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 40MHz51 Series
AT89C51IC2-RLTUL Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51IC2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51IC2-SLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51IC2-SLRUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51IC2-SLSUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C51IC2-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C51ID2-RLRUM Microchip Technology Microcontrollers (MCU/MPU/SOC) LQFP-44(10x10) 60MHz51 Series
AT89C51ID2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51ID2-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C51RB2-3CSUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIL-40 40MHz51 Series
AT89C51RB2-3CSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIL-40 60MHz51 Series
AT89C51RB2-RLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 40MHz51 Series
AT89C51RB2-RLTUL Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 40MHz51 Series
AT89C51RB2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51RB2-SLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51RB2-SLSUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51RB2-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C51RC2-3CSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIL-40 60MHz51 Series
AT89C51RC-24AU Microchip Technology Microcontroller Units (MCUs/MPUs/SOCs) TQFP-44(10x10) 24MHz51 Series
AT89C51RC-24JU Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 24MHz51 Series
AT89C51RC-24PU Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIP-40 24MHz51 Series
AT89C51RC2-RLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) LQFP-44(10x10) 40MHz51 Series
AT89C51RC2-RLTUL Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 40MHz51 Series
AT89C51RC2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51RC2-SLRUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51RC2-SLSUL Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 40MHz51 Series
AT89C51RC2-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C51RD2-RLTUM Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFP-44(10x10) 60MHz51 Series
AT89C51RD2-SLSUM Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 60MHz51 Series
AT89C52-24JC Microchip Technology ATMEL & AVR PLCC-44 8KB0
AT89C55WD-24AU Microchip Technology Microcontrollers (MCU/MPU/SOC) TQFP-44(10x10) 24MHz51 Series
AT89C55WD-24JU Microchip Technology Microcontrollers (MCU/MPU/SOC) PLCC-44(16.6x16.6) 24MHz51 Series
AT89C55WD-24PU Microchip Technology Microcontrollers (MCU/MPU/SOC) DIP-40 24MHz51 Series
AT89LP2052-20SU Microchip Technology Microcontrollers (MCU/MPU/SOC) SOIC-20-300mil 20MHz51 Series
AT89LP2052-20XU Microchip Technology Microcontrollers (MCU/MPU/SOC) TSSOP-20 20MHz51 Series
AT89LP213-20PU Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIP-14 20MHz51 Series
AT89LP213-20XU Microchip Technology Microcontrollers (MCU/MPU/SOC) TSSOP-14 20MHz51 Series
AT89LP214-20PU Microchip Technology Microcontrollers (MCU/MPU/SOC) PDIP-14 20MHz51 Series
AT89LP214-20XU Microchip Technology Microcontrollers (MCU/MPU/SOC) TSSOP-14 20MHz51 Series
AT89LP216-20SU Microchip Technology Microcontrollers (MCU/MPU/SOC) SOIC-16-300mil 20MHz51 Series
AT89LP216-20XU Microchip Technology Microcontrollers (MCU/MPU/SOC) TSSOP-16
AT89LP3240-20AU Microchip Technology Microcontrollers (MCU/MPU/SOC) TQFP-44(10x10) 20MHz51 Series
AT89LP3240-20JU Microchip Technology Microcontroller Units (MCUs/MPUs/SOCs) PLCC-44(16.6x16.6) 20MHz51 Series
AT89LP3240-20MU Microchip Technology Microcontrollers (MCU/MPU/SOC) VQFN-44-EP(7x7) 20MHz51 Series

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Frequently asked questions

Is Atmel still in business?

Atmel (AVR ATmega/ATtiny, SAM Arm MCUs, AT24/AT25 EEPROM, CryptoAuthentication) was acquired by Microchip Technology in 2016.

Can I still buy Atmel parts?

Yes. PartnerSemi quotes Atmel part numbers, including obsolete and end-of-life parts and parts with old Atmel markings. Send the part number and quantity; we reply with price, lead time, date code and origin. We are an independent distributor, not an authorized Atmel or Microchip Technology distributor.

PartnerSemi is not affiliated with Atmel or Microchip Technology. Brand names are used to identify parts only.