P89LPC904 데이터 시트보기 (PDF) - Philips Electronics

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P89LPC904

8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter

Philips Electronics 

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Table 4: P89LPC904 Special function registers…continued

* indicates SFRs that are bit addressable.

Name

Description

SFR

addr.

MSB

PCONB reserved for Power Control B6H

-

-

Register B

Bit functions and addresses

-

-

-

-

Reset value

LSB Hex Binary

-

-

00[1] xxxxxxxx

Bit address D7

D6

D5

D4

D3

D2

D1

D0

PSW*

Program status word

D0H CY

AC

F0

RS1

RS0

OV

F1

P 00 00000000

PT0AD

RSTSRC

RTCCON

Port 0 digital input disable

Reset source register

Real-time clock control

F6H

DFH

D1H

-

-

RTCF

-

-

RTCS1

PT0AD.5 PT0AD.4

BOF

POF

RTCS0

-

-

R_BK

-

PT0AD.2

R_WD

-

-

R_SF

ERTC

-

R_EX

RTCEN

00

[3]

60[1]

[7]

xx00000x

011xxx00

RTCH

RTCL

Real-time clock register HIGH D2H

Real-time clock register LOW D3H

00[7] 00000000

00[7] 00000000

SADDR Serial port address register A9H

00 00000000

SADEN Serial port address enable B9H

00 00000000

SBUF

Serial port data buffer register 99H

xx xxxxxxxx

Bit address 9F

9E

9D

9C

9B

9A

99

98

SCON* Serial port control

98H SM0/FE SM1

SM2

REN

TB8

RB8

TI

RI 00 00000000

SSTAT Serial port extended status BAH DBMOD INTLO CIDIS DBISEL FE

BR

OE

STINT 00 00000000

register

SP

Stack pointer

81H

07 00000111

Bit address 8F

8E

8D

8C

8B

8A

89

88

TCON* Timer 0 and 1 control

88H TF1

TR1

TF0

TR0

-

-

-

-

00 00000000

TH0

Timer 0 HIGH

8CH

00 00000000

TH1

Timer 1 HIGH

8DH

00 00000000

TL0

Timer 0 LOW

8AH

00 00000000

TL1

Timer 1 LOW

8BH

00 00000000

TMOD

TRIM

WDCON

Timer 0 and 1 mode

89H

Internal oscillator trim register 96H

Watchdog control register

A7H

-

RCCLK

PRE2

-

-

PRE1

T1M1

TRIM.5

PRE0

T1M0

TRIM.4

-

-

TRIM.3

-

-

TRIM.2

WDRUN

T0M1

TRIM.1

WDTOF

T0M0

TRIM.0

WDCLK

00

[5] [6]

[4] [6]

00000000

WDL

Watchdog load

C1H

FF 11111111

WFEED1 Watchdog feed 1

C2H

WFEED2 Watchdog feed 2

C3H

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