SyncMOS Technologies International, Inc.

SM59264

8-Bits Micro-controller

with 128KB flash & 1KB RAM & TWSI & SPWM embedded

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

Ver 2.1 SM59264 08/2006

6

C5H

TWSIRxD

00H

TWSIRxD7

TWSIRxD6

TWSIRxD5

TWSIRxD4

TWSIRxD3

TWSIRxD2

TWSIRxD1

TWSIRxD0

A9H

IE1

00

ETWSI

AAH

IFR

00

TWSIF

BAH

IP1

00

PTWSI

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

F4H

ISPFAH

00H

FA15

FA14

FA13

FA12

FA11

FA10

FA9

FA8

F5H

ISPFAL

00H

FA7

FA6

FA5

FA4

FA3

FA2

FA1

FA0

F6H

ISPFD

00H

FD7

FD6

FD5

FD4

FD3

FD2

FD1

FD0

F7H

ISPC

0*0***00

START

FAU0

F1

F0

Extension Function Description

1. Memory Structure

The SM59264 is the general 8052 hardware core to integrate the expanded 768 byte data RAM, 64KB flash program

memory with ISP function module and 64KB data flash as a single chip micro controller. Its memory structure follows

general 8052 structure plus SM59264 proprietary external RAM structure.

1.1 Program Memory

The SM59264 has 64K byte on-chip flash memory which used as general program memory, on which include up to 4K

byte specific ISP service program memory space. The address range for the 64K byte is $0000 to $FFFF. The address

range for the ISP service program is $F000 to $FFFF. The ISP service program size can be partitioned as N blocks of

512 byte (N=0 to 8). When N=0 means no ISP service program space available, total 64K byte memory used as

program memory. When N=1 means memory address $FE00 to $FFFF reserved for ISP service program. When N=2

means memory address $FC00 to FFFF reserved for ISP service program,...etc. Value N can be set and programmed

into SM59264 by writer.

1.1.1 Program Code Security

MOVC instruction executed from external program memory space will not be able to fetch internal codes from on chip

program memory after the chip is protected on the Writer.