8-bit MCU 80C51 CISC 16MHz 8KB EPROM 3.3V/5V 40-Pin PDIP
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8-bit MCU 80C51 CISC 33MHz 8KB EPROM 5V 40-Pin PDIP
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8-bit 80C51 Microcontroller, 8KB EPROM, 256B RAM, 33MHz, PDIP