8-bit microcontroller featuring an 8051 CPU core, operating at a maximum clock frequency of 24MHz with a speed of 20MHz. This FLASH-based device offers 4096 words of ROM and 128 bytes of RAM, with 32 programmable I/O lines, an 8-bit external data bus, and a 16-bit address bus. Packaged in a 44-terminal PQCC with a commercial temperature grade, it supports a supply voltage range of 4V to 6V.
Atmel AT89C51-20JC technical specifications.
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