SyncMOS Technologies International, Inc.
SM59364
8-Bits Micro-controller
64KB ISP flash & 1KB RAM embedded
device, the ISP service program should include baud rate, checksum or parity check or any error-checking
mechanism to avoid data transmission error.
The ISP service program can be initiated under SM59364 active or idle mode. It can not be initiated under power down
mode.
2.2 Initiate ISP Service Program
To initiate the ISP service program is to load the program counter (PC) with start address of ISP service program
and execute it. There are two ways to do so:
(1) Blank reset. Hardware reset with first flash address blank ($0000=#FFH) will load the PC with start address of ISP
service program.
(2) Execute ‘JUMP’ instruction can load the start address of the ISP service program to PC.
User can initiate general 8052 INT function to initiate the ISP service program. After ISP service program executed,
user need to reset the SM59364, either by hardware reset or by WDT, or jump to the address $0000 to re-start the
firmware program.
ISP Registers - ISPFAH, ISPFAL, ISPFD and ISPC
ISP Flash Address-High Register(ISPFAH,$F4)
bit-7
FA15
Read / Write:
R/W
FA14
R/W
FA13
R/W
FA12
R/W
0
FA11
R/W
0
FA10
R/W
0
FA9
R/W
0
bit-0
FA8
R/W
0
Reset value:
0
0
0
FA15 ~ FA8: flash address-high for ISP function
ISP Flash Address-Low Register(ISPFAL,$F5)
bit-7
FA7
Read / Write:
Reset value:
R/W
0
FA6
R/W
0
FA5
R/W
0
FA4
R/W
0
FA3
R/W
0
FA2
R/W
0
FA1
R/W
0
bit-0
FA0
R/W
0
FA7 ~ FA0: flash address-low for ISP function
The ISPFAH & ISPFAL provide the 16-bit flash memory address for ISP function. The flash memory address should
not include the ISP service program space address. If the flash memory address indicated by ISPFAH & ISPFAL
registers overlay with the ISP service program space address, the flash program/page erase of ISP function executed
thereafter will have no effect.
Specifications subject to change without notice contact your sales representatives for the most recent information.
IDMMX-0033
8
Ver B SM59364 04/2008
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
