P87LPC779 datasheet(1/74 Pages) PHILIPS

Part #	P87LPC779

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

PDF	74 Pages

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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P87LPC779

CMOS single-chip 8-bit 80C51 microcontroller with

128-byte data RAM, 8 kB OTP

Rev. 02 — 03 May 2004

Product data

1.

General description

The P87LPC779 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

P87LPC779 offers a four channel, 8-bit A/D converter, two DAC outputs,

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 P87LPC779 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 Two 8-bit Digital to Analog Converters.

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 eight values.

s 20-pin TSSOP package.

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