P87LPC778 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

P87LPC778

CMOS single-chip 8-bit 80C51 microcontroller with 128-byte data RAM, 8 kB OTP

Philips Electronics 

P87LPC778

CMOS single-chip 8-bit 80C51 microcontroller with

128-byte data RAM, 8 kB OTP

Rev. 01 — 31 March 2004

Product data

1. General description

The P87LPC778 is a 20-pin single-chip microcontroller designed for low pin count

applications demanding high-integration, low cost solutions over a wide range of

performance requirements. A member of the Philips low pin count family, the

P87LPC778 offers a 4 channel, 8-bit A/D converter, programmable oscillator

configurations for high and low speed crystals or RC operation, wide operating

voltage range, programmable port output configurations, selectable Schmitt trigger

inputs, LED drive outputs, and a built-in Watchdog timer. The P87LPC778 is based

on an accelerated 80C51 processor architecture that executes instructions at twice

the rate of standard 80C51 devices.

2. Features

s An accelerated 80C51 CPU provides instruction cycle times of 300 ns to 600 ns

for all instructions except multiply and divide when executing at 20 MHz.

s 2.7 V to 5.5 V operating range for digital functions.

s Four channel, 10-bit Pulse Width Modulator.

s Four channel, 8-bit Analog to Digital Converter. Conversion time is 9.3 µs with a

20 MHz crystal.

s I2C-bus communication port and Full duplex UART.

s Internal oscillator 2.5 %. The internal oscillator option allows operation with no

external oscillator components.

s Two analog comparators.

s Eight keypad interrupt inputs, plus two additional external interrupt inputs.

s Watchdog timer with separate on-chip oscillator, requiring no external

components. The Watchdog time-out time is selectable from 8 values.

s 20-pin TSSOP package.

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