SM59A16U1
8-Bit Micro-controller
64KB with ISP Flash
& 6K+256B RAM embedded
ISPF[2:0]
000
ISP function
Byte program
Chip protect
Page erase
Chip erase
Write option
Read option
Erase option
reserved
001
010
011
100
101
110
111
One page of flash memory is 128byte
When chip protected or no ISP service, option can only read.
The choice ISP function will start to execute once the software write data to ISPFC register.
To perform byte program/page erases ISP function, user need to specify flash address at first. When performing
page erase function, SM59A16U1 will erase entire page which flash address indicated by ISPFAH & ISPFAL
registers located within the page.
e.g. flash address: $ XYMN
page erase function will erase from $XY00 to $XYFF
To perform the chip erase ISP function, SM59A16U1 will erase all the flash program memory except the ISP
service program space. To perform chip protect ISP function, the SM59A16U1 flash memory content will be read
#00H.
e.g. ISP service program to do the byte program - to program #22H to the address $1005H
MOV TAKEY, #55h
MOV TAKEY, #0AAh
MOV TAKEY, #5Ah ; enable ISPE write attribute
ORL IFCON, #01H ; enable SM39R08A3 ISP function
MOV ISPFAH, #10H ; set flash address-high, 10H
MOV ISPFAL, #05H ; set flash address-low, 05H
MOV ISPFD, #22H ; set flash data to be programmed, data = 22H
MOV ISPFC, #00H ; start to program #22H to the flash address $1005H
MOV TAKEY, #55h
MOV TAKEY, #0AAh
MOV TAKEY, #5Ah ; enable ISPE write attribute
ANL IFCON, #0FEH ; disable SM39R08A3 ISP function
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M071
Ver A SM59A16U1 04/12/2013
- 138 -
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
