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Description

The Philips 80C51 / 87C51 / 80C52 / 87C52 is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 2.7 V to 5.5 V.

The 8xC51 and 8xC52 contain a 128 ×8 RAM and 256 ×8 RAM respectively, 32 I/O lines, three 16-bit counter/timers, a six-source, four-priority level nested interrupt structure, a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits.

4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V), low power, high speed (33 MHz), 128/256 B RAM

Features : 

• 12-clock operation with selectable 6-clock operation

• Memory addressing capability

– 64 kbytes ROM and 64 kbytes RAM

• Power control modes:

– Clock can be stopped and resumed

– Idle mode

– Power-down mode

• CMOS and TTL compatible