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Details, datasheet, quote on part number:P87LPC778
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Datasheet text preview:
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.
Philips Semiconductors
P87LPC778
CMOS single-chip 8-bit microcontroller
3. Ordering information
Table 1: Ordering information Package Name P87LPC778FDH TSSOP20 Description plastic thin shrink small outline package; 20 leads; body width 4.4 mm Temperature range -40 °C to +85 °C Version SOT360-1 Type number
9397 750 12378
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data
Rev. 01 -- 31 March 2004
2 of 79
Philips Semiconductors
P87LPC778
CMOS single-chip 8-bit microcontroller
4. Block diagram
ACCELERATED 80C51 CPU INTERNAL BUS 8 kB CODE EPROM 128-BYTE DATA RAM PORT 2 CONFIGURABLE I/Os PORT 1 CONFIGURABLE I/Os PORT 0 CONFIGURABLE I/Os UART
I2C
TIMER 0, 1
WATCHDOG TIMER AND OSCILLATOR
ANALOG COMPARATORS
KEYPAD INTERRUPT
A/D CONVERTER
PROGRAMMABLE OSCILLATOR DIVIDER
CPU CLOCK ON-CHIP RC OSCILLATOR
PULSE WIDTH MODULATOR
CRYSTAL OR RESONATOR
CONFIGURABLE OSCILLATOR
POWER MONITOR (POWER-ON RESET, BROWNOUT RESET)
002aaa614
Fig 1. Block diagram.
9397 750 12378
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data
Rev. 01 -- 31 March 2004
3 of 79
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