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

6/26

Ver 2.1

SM79164 08/2006

SyncMOS Technologies International. Inc.

SM79164

Addr

SFR

Reset

7

6

5

4

3

2

1

0

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

D3H

PWMC0

*****000

PBS0

PFS01

PFS00

D4H

PWMC1

*****000

PBS1

PFS11

PFS10

D5H

PWMC2

*****000

PBS2

PFS21

PFS20

D6H

PWMC3

*****000

PBS3

PFS31

PSF30

DBH

PWMC4

*****000

PBS4

PFS41

PFS40

DCH

PWMC5

*****000

PBS5

PFS51

PFS50

DDH

PWMC6

*****000

PBS6

PFS61

PFS60

DEH

PWMC7

*****000

PBS7

PFS71

PSF70

D8H

P4

****1111

P4.3

P4.2

P4.1

P4.0

Extension Function Description

1. Memory Structure

The SM79164 is the general 8052 hardware core as a single chip micro controller. Its memory structure follows general

8052 structure.

1.1 Program Memory

The SM79164 has 64K byte on-chip flash memory which used as general program memory. The address range for the 64K

byte is $0000 to $FFFF.

64K Program

memory space

FFFF

0000

Note: The single flash block address structure for doing as well as program ROM flash.

1.2 Data Memory

The SM79164 has 4K bytes on-chip RAM, 256 bytes of it are the same as general 8052 internal memory structure while the

expanded 3840 bytes on-chip RAM can be accessed by external memory addressing method (by instruction MOVX), or by

‘Bank mapping direct addressing mode’ as described in page 8.