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
AT27C2048-55PC Microchip Technology Non-Volatile Memory (ROM) PDIP-40
AT27C2048-55PU Microchip Technology Non-Volatile Memory (ROM) PDIP-40
AT27C2048-55VC Microchip Technology Non-Volatile Memory (ROM) VSOP-40
AT27C2048-55VI Microchip Technology Non-Volatile Memory (ROM) VSOP-40
AT27C2048-70JC Microchip Technology Non-Volatile Memory (ROM) PLCC-44(16.6x16.6)
AT27C2048-70JI Microchip Technology Non-Volatile Memory (ROM) PLCC-44(16.6x16.6)
AT27C2048-70PC Microchip Technology Non-Volatile Memory (ROM) PDIP-40
AT27C2048-70PI Microchip Technology Non-Volatile Memory (ROM) PDIP-40
AT27C2048-70VC Microchip Technology Non-Volatile Memory (ROM) VSOP-40
AT27C2048-70VI Microchip Technology Non-Volatile Memory (ROM) VSOP-40
AT27C2048-90JC Microchip Technology Non-Volatile Memory (ROM) PLCC-44(16.6x16.6)
AT27C2048-90JI Microchip Technology Non-Volatile Memory (ROM) PLCC-44(16.6x16.6)
AT27C2048-90JU Microchip Technology EEPROM PLCC-44(16.6x16.6)
AT27C2048-90JU-T Microchip Technology EEPROM PLCC-44(16.6x16.6)
AT27C2048-90PC Microchip Technology Non-Volatile Memory (ROM) PDIP-40
AT27C2048-90VC Microchip Technology Non-Volatile Memory (ROM) VSOP-40
AT27C256R-12JC Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-12PA Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-12PC Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-12PI Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-12RC Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-12RI Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-12TC Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-12TI Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-15JC Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-15JI Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-15PA Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-15PC Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-15PI Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-15RC Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-15RI Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-15TC Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-15TI Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-45JC Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-45JI Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-45JU Microchip Technology EEPROM PLCC-32(11.4x14)
AT27C256R-45JU-T Microchip Technology EEPROM PLCC-32(11.4x14)
AT27C256R-45PC Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-45PI Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-45PU Microchip Technology Non-Volatile Memory (ROM) DIP-28-600mil 256KbitParallel Port (Parallel)
AT27C256R-45RC Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-45RI Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-45RU Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-45TC Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-45TI Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-45TU Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-55JC Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-55JI Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-55PC Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-55PI Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-55RC Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-55RI Microchip Technology Non-Volatile Memory (ROM) SOIC-28
AT27C256R-55TC Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-55TI Microchip Technology Non-Volatile Memory (ROM) TSOP-28
AT27C256R-70JI Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14)
AT27C256R-70JU Microchip Technology Non-Volatile Memory (ROM) PLCC-32(11.4x14) 256KbitParallel Port (Parallel)
AT27C256R-70JU-T Microchip Technology EEPROM PLCC-32(11.4x14)
AT27C256R-70PA Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-70PC Microchip Technology Non-Volatile Memory (ROM) PDIP-28
AT27C256R-70PI Microchip Technology Non-Volatile Memory (ROM) PDIP-28

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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.