8-Bit Microcontroller featuring an 8051 CPU core, operating at a maximum clock frequency of 24MHz with a speed of 20MHz. This FLASH-programmable device offers 4096 words of ROM and 128 bytes of RAM, with an 8-bit external data bus and a 16-bit address bus. It includes 32 I/O lines and is housed in a 40-pin PDIP package (0.600 inch width). Designed for commercial temperature grades, it operates within a supply voltage range of 4V to 6V, with a nominal voltage of 5V.
Atmel AT89C51-20PC technical specifications.
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