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25LC128
AT87C51RD2-3 (2)AT87C51RD2 (8)AT87C51R (21)AT87C5 (42)AT87 (63)AT8 (261)
Atmel

AT87C51RD2-3CSUL

80C51 87C Microcontroller IC 8-Bit 30/20MHz 64KB (64K x 8) OTP 40-PDIL
Atmel

AT87C51RD2-3CSUM

80C51 87C Microcontroller IC 8-Bit 40/20MHz 64KB (64K x 8) OTP 40-PDIL
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