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89LPC925

8-bit microcontrollers with accelerated two-clock 80C51 core 4 kB/8 kB 3 V low-power Flash with 8-bit A/D converter

Philips Electronics 

Philips Semiconductors

4. Block diagram

P89LPC924/925

8-bit microcontrollers with accelerated two-clock 80C51 core

P89LPC924/925

HIGH PERFORMANCE

ACCELERATED 2-CLOCK 80C51 CPU

2 kB/4 kB/8 kB

CODE FLASH

256-BYTE

DATA RAM

INTERNAL BUS

PORT 3

CONFIGURABLE I/Os

PORT 1

CONFIGURABLE I/Os

PORT 0

CONFIGURABLE I/Os

UART

REAL-TIME CLOCK/

SYSTEM TIMER

I2C

TIMER 0

TIMER 1

WATCHDOG TIMER

AND OSCILLATOR

CRYSTAL

OR

RESONATOR

KEYPAD

INTERRUPT

PROGRAMMABLE

OSCILLATOR DIVIDER

CONFIGURABLE

OSCILLATOR

CPU

CLOCK

ON-CHIP

RC

OSCILLATOR

Fig 1. Block diagram.

ANALOG

COMPARATORS

ADC1/DAC1

POWER MONITOR

(POWER-ON RESET,

BROWNOUT RESET)

002aaa786

9397 750 13459

Product data

Rev. 02 — 15 June 2004

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

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