P89LPC912 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

P89LPC912

8-bit microcontrollers with two-clock 80C51 core, 1 kB 3 V flash with 128-byte RAM

NXP Semiconductors. 

NXP Semiconductors

5. Block diagram

P89LPC912/913/914

8-bit microcontrollers with two-clock 80C51 core

P89LPC912

HIGH PERFORMANCE

ACCELERATED 2-CLOCK 80C51 CPU

P3[1:0]

P2[5:2]

P1.2, P1.5

P0.2, P0[6:4]

1 kB CODE FLASH

internal bus

128 BYTE DATA RAM

PORT 3

CONFIGURABLE I/O

PORT 2

CONFIGURABLE I/O

PORT 1

CONFIGURABLE I/O

PORT 0

CONFIGURABLE I/O

SPI

REAL TIME CLOCK/

SYSTEM TIMER

TIMER 0

TIMER 1

ANALOG

COMPARATORS

POWER MONITOR

(POWER-ON RESET,

BROWNOUT RESET)

SPICLK

MOSI

MISO

SS

T0

CMP1

CIN2A

CIN1A

CMPREF

KEYPAD INTERRUPT

WATCHDOG TIMER

AND OSCILLATOR

CRYSTAL

OR

RESONATOR

XTAL1

XTAL2

PROGRAMMABLE

OSCILLATOR DIVIDER

CONFIGURABLE

OSCILLATOR

CPU clock

ON-CHIP

OSCILLATOR

Fig 1. P89LPC912 block diagram

002aaa472

P89LPC912_913_914_5

Product data sheet

Rev. 05 — 28 September 2007

© NXP B.V. 2007. All rights reserved.

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