September 2002

Specifications subject to change without notice,contact your sales representatives for the most recent information.

5/25

Ver 1.0 PID 8958A 09/02

SyncMOS Technologies Inc.

SM8958A

Special Function Register (SFR) Memory Map

B

ACC

P4

PSW

T2CON

T2MOD

RCAP2L

RCAP2H

TL2

TH2

IP

SCONF

P3

IE

SPWMD4

P2

SPWMC

SPWMD0

SPWMD1

SPWMD2

SPWMD3

SCON

SBUF

P1CON

WDTC

P1

WDTKEY

TCON

TMOD

TL0

TL1

TH0

TH1

P0

SP

DPL

DPH

(Reserved)

RCON

DBANK

PCON

$F8

$F0

$E8

$E0

$D8

$D0

$C8

$C0

$B8

$B0

$A8

$A0

$98

$90

$88

$80

$FF

$F7

$EF

$E7

$DF

$D7

$CF

$C7

$BF

$B7

$AF

$A7

$9F

$97

$8F

$87

Note: The text of SFRs with bold type characters are Extension Special Function Registers forSM8958A

Addr

SFR

Reset

7

6

5

4

3

2

1

0

85H

RCON

******00

RAMS1

RAMS0

86H

DBANK

0***0001

BSE

BS3

BS2

BS1

BS0

97H

WDTKEY

********

WDTKEY7 WDTKEY6 WDTKEY5 WDTKEY4 WDTKEY3 WDTKEY2 WDTKEY1 WDTKEY0

9BH

P1CON

00000***

SPWME4

SPWME3

SPWME2

SPWME1

SPWME0

9FH

WDTC

0*0**000

WDTE

CLEAR

PS2

PS1

PS0

A3H

SPWMC

******00

SPFS1

SPFS0

A4H

SPWMD0

00H

SPWMD04 SPWMD03 SPWMD02 SPWMD01 SPWMD00

BRM02

BRM01

BRM00

A5H

SPWMD1

00H

SPWMD14 SPWMD13 SPWMD12 SPWMD11 SPWMD10

BRM12

BRM11

BRM10

A6H

SPWMD2

00H

SPWMD24 SPWMD23 SPWMD22 SPWMD21 SPWMD20

BRM22

BRM21

BRM20

A7H

SPWMD3

00H

SPWMD34 SPWMD33 SPWMD32 SPWMD31 SPWMD30

BRM32

BRM31

BRM30

ACH

SPWMD4

00H

SPWMD44 SPWMD43 SPWMD42 SPWMD41 SPWMD40

BRM42

BRM41

BRM40

BFH

SCONF

0*****00

WDR

OME

ALEI

C8H

T2CON

00H

TF2

EXF2

RCLK

TCLK

EXEN2

TR2

C/T2

CP/RL2

C9H

T2MOD

******00

T2OE

DCEN

D8H

P4

****1111

P4.3

P4.2

P4.1

P4.0

Special Function Register (SFR)

The address $80 to $FF can be accessed by direct addressing mode only.

Address $80 to $FF is SFR area.

The following table lists the SFRs which are identical to general 8052, as well as SM8958A Extension SFRs.