87C451 - 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless/ expanded I/O

NXP

Datasheet Details

Part number	87C451
Manufacturer	NXP ↗
File Size	162.75 KB
Description	80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless/ expanded I/O
Datasheet	87C451_PhilipsSemiconductors.pdf

The Philips 8XC451 is an I/O expanded single-chip microcontroller fabricated with Philips high-density CMOS technology.

except the on-board 4k × 8 ROM. The 87C451 has 4k of EPROM on-chip as program memory and is otherwise identical to the 83C451. The 8XC451 has two software selectable modes of reduced activity for further power reduction; idle mode and power-down mode. Idle mode freezes the CPU while allowing the RAM, timers, serial port, and interrupt system to continue functioning. Power-down mode freezes the oscillator, causing all other chip functions to be inoperative while maintaining the RAM contents. PIN.

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Published: Mar 22, 2005 |