25LC128
AT87C51RC2-R (2)AT87C51RC2 (6)AT87C51R (21)AT87C5 (42)AT87 (63)AT8 (261)

Atmel

AT87C51RC2-RLTUL

80C51 87C Microcontroller IC 8-Bit 30/20MHz 32KB (32K x 8) OTP 44-VQFP (10x10)
Atmel

AT87C51RC2-RLTUM

80C51 87C Microcontroller IC 8-Bit 40/20MHz 32KB (32K x 8) OTP 44-VQFP (10x10)

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