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80C31

NXP
Part Number 80C31
Manufacturer NXP
Description 8-bit microcontroller
Published Mar 22, 2005
Detailed Description INTEGRATED CIRCUITS 80C31/80C32 80C51 8-bit microcontroller family 128/256 byte RAM ROMless low voltage (2.7 V–5.5 V), ...
Datasheet PDF File 80C31 PDF File

80C31
80C31

Overview
INTEGRATED CIRCUITS 80C31/80C32 80C51 8-bit microcontroller family 128/256 byte RAM ROMless low voltage (2.
7 V–5.
5 V), low power, high speed (33 MHz) Product specification IC28 Data Handbook 2000 Aug 07 Philips Semiconductors Philips Semiconductors 80C51 8-bit microcontroller family 128/256 byte RAM ROMless low voltage (2.
7V–5.
5V), low power, high speed (33 MHz) Product specification 80C31/80C32 DESCRIPTION The Philips 80C31/32 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 80C31/32 ROMless devices contain a 128 × 8 RAM/256 × 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.
SELECTION TABLE For applications requiring more ROM and RAM, see the 8XC54/58 and 8XC51RA+/RB+/RC+/80C51RA+ data sheet.
ROM/EPROM Memory Size (X by 8) RAM Size (X by 8) Programmable Timer Counter (PCA) 80C31/8XC51 0K/4K 128 No 80C32/8XC52/54/58 0K/8K/16K/32K 256 No 80C51RA+/8XC51RA+/RB+/RC+ 0K/8K/16K/32K 512 Yes 8XC51RD+ 64K 1024 Yes Hardware Watch Dog Timer No No Yes Yes FEATURES • 8051 Central Processing Unit – 128 × 8 RAM (80C31) – 256 × 8 RAM (80C32) – Three 16-bit counter/timers – Boolea...


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