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P87LPC779 Datasheet, PDF (1/74 Pages) NXP Semiconductors – CMOS single-chip 8-bit 80C51 microcontroller with 128-byte data RAM, 8 kB OTP | |||
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P87LPC779
CMOS single-chip 8-bit 80C51 microcontroller with
128-byte data RAM, 8 kB OTP
Rev. 02 â 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 conï¬gurations for high and low speed crystals or RC
operation, wide operating voltage range, programmable port output conï¬gurations,
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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