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.

FEATURES

? 8051 Central Processing Unit

– 128 × 8 RAM (80C31)

– 256 × 8 RAM (80C32)

– Three 16-bit counter/timers

– Boolean processor

– Full static operation

– Low voltage (2.7 V to 5.5 V@ 16 MHz) 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 = 5 V

– 0 to 16 MHz

– 0 to 33 MHz

? Three package styles

? Extended temperature ranges

? Dual Data Pointers

? 4 level priority interrupt

? 6 interrupt sources

? Four 8-bit I/O ports

? Full–duplex enhanced UART

– Framing error detection

– Automatic address recognition

? Programmable clock out

? Asynchronous port reset

? Low EMI (inhibit ALE)

? Wake-up from Power Down by an external interrupt

P80C32UFAA屬于集成電路（IC） > 微控制器。恩智浦半導(dǎo)體公司制造生產(chǎn)的P80C32UFAA微控制器微控制器產(chǎn)品是相對復(fù)雜的用戶可編程數(shù)字邏輯器件。這些產(chǎn)品與視為微控制器的器件密切相關(guān)，兩者之間的區(qū)別主要體現(xiàn)在制造商選擇的用詞。不過按照傳統(tǒng)，微控制器集成了工作存儲器，也更可能包含混合信號外設(shè)，并且往往與更簡單的軟件范例結(jié)合使用，旨在重復(fù)執(zhí)行一系列預(yù)定義的任務(wù)。