P87LPC762FN datasheet(11/57 Pages) PHILIPS

11 / 57 page

Philips Semiconductors

Preliminary data

87LPC762

Low power, low price, low pin count (20 pin)

microcontroller with 2 kbyte OTP

2001 Oct 26

Name

Reset

Value

Bit Functions and Addresses

MSB

LSB

SFR

Address

Description

TL1

Timer 1 low byte

8Bh

00h

TMOD

Timer 0 and 1 mode

89h

GATE

C/T

GATE

C/T

00h

WDCON#

Watchdog control register

A7h

–

WDOVF

WDRUN

WDCLK

WDS2

WDS1

WDS0

Note 4

WDRST#

Watchdog reset register

A6h

xxh

NOTES:

* SFRs are bit addressable.

# SFRs are modified from or added to the 80C51 SFRs.

1. Unimplemented bits in SFRs are X (unknown) at all times. Ones should not be written to these bits since they may be used for other

purposes in future derivatives. The reset value shown in the table for these bits is 0.

2. I/O port values at reset are determined by the PRHI bit in the UCFG1 configuration byte.

3. The PCON reset value is x x BOF POF–0 0 0 0b. The BOF and POF flags are not affected by reset. The POF flag is set by hardware upon

power up. The BOF flag is set by the occurrence of a brownout reset/interrupt and upon power up.

4. The WDCON reset value is xx11 0000b for a Watchdog reset, xx01 0000b for all other reset causes if the watchdog is enabled, and xx00

0000b for all other reset causes if the watchdog is disabled.

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