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P80C31

NXP
Part Number P80C31
Manufacturer NXP
Description 80C51 8-bit microcontroller
Published Mar 22, 2005
Detailed Description INTEGRATED CIRCUITS 80C51/87C51/80C31 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.7V–5.5V)...
Datasheet PDF File P80C31 PDF File

P80C31
P80C31


Overview
INTEGRATED CIRCUITS 80C51/87C51/80C31 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage (2.
7V–5.
5V), low power, high speed (33 MHz) Product specification Supersedes data of 1999 Apr 01 IC28 Data Handbook 2000 Jan 20 Philips Semiconductors Philips Semiconductors Product specification 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, low voltage (2.
7V–5.
5V), low power, high speed (33 MHz) 80C51/87C51/80C31 DESCRIPTION The Philips 8XC51/31 is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 2.
7V to 5.
5V.
The 8XC51/31 contains a 4k × 8 ROM, a 128 × 8 RAM, 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.
In addition, the device is a low power static design which offers a wide range of operating frequencies down to zero.
Two software selectable modes of power reduction—idle mode and power-down mode are available.
The idle mode freezes the CPU while allowing the RAM, timers, serial port, and interrupt system to continue functioning.
The power-down mode saves the RAM contents but freezes the oscillator, causing all other chip functions to be inoperative.
Since the design is static, the clock can be stopped without loss of user data and then the execution resumed from the point the clock was stopped.
FEATURES • 8051 Central Processing Unit – 4k × 8 ROM (80C51) – 128 × 8 RAM – Three 16-bit counter/timers – Boolean processor – Full static operation – Low voltage (2.
7V to 5.
5V@ 16MHz) operation • Memory addressing capability – 64k ROM and 64k RAM • Power control modes: – Clock can be stopped and resumed – Idle mode – Power-down mode • CMOS and TTL compatible • TWO speed ranges at VCC = 5V – 0 to 16MHz – 0 to 33MHz SELECTION TABLE For applications requiring more ROM and RAM, see the 8...


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