sm59264 SyncMOS Technologies,Inc, sm59264 Datasheet - Page 17

• Manufacturer Part Number: sm59264
• Description: 8-bits Micro-controller With 128kb Flash & 1kb Ram & Twsi & Spwm Embedded
• Manufacturer: SyncMOS Technologies,Inc

FD7 ~FD0 : flash data for ISP function
The ISPFD provide the 8-bit data for ISP function
ISP Registers -Flash Control Register (ISPC, $F7)
ISPF[1:0] : ISP function select bit
Note: The START bit is read-only by default, software must write three specific values 55H, AAH and 55H sequentially
Any attempt to set START bit will not be allowed without the procedure above.
After START bit set to 1 then the SM59264 hardware circuit will latch flash address and data bus and hold the program
counter until the START bit reset to 0 when ISP function finished. The program counter (PC) will point to next
instruction after START bit reset to 0. User does not need to check START bit status by software method.
To perform byte program/page erase ISP function, user need to specify flash address at first. When performing page
erase function, SM59264 will erase entire page which flash address indicated by ISPFAH & ISPFAL registers located
within the page.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M012 Ver B SM59264
START : ISP function start bit
FAU0 : 64K program Flash or 64K Data Flash select bit
Read / Write:
Reset value:
ISPF [1:0]
Read / Write:
Reset value:
to the ISPFD register to enable the START bit write attribute. That is :
00
01
10
11
SyncMOS Technologies International, Inc.
= 1 : start ISP function which indicated by bit 1, bit 0 (ISPF1, ISPF0)
= 0 : no operation
MOV ISPFD, #55H
MOV ISPFD, #0AAH
MOV ISPFD, #55H
= 1 : selected 64K data flash
= 0 : selected 64K program flash
ISP function
Byte program
Chip protect
Page erase (512Byte)
Chip erase
START
bit-7
R/W
0
bit-7
R/W
FD7
0
Unused
-
*
FD6
R/W
0
FAUO
R/W
0
FD5
R/W
0
with 128KB flash & 1KB RAM & TWSI & SPWM embedded
Unused
17
*
-
FD4
R/W
0
Unused
*
-
R/W
FD3
0
Unused
*
-
R/W
FD2
0
8-Bits Micro-controller
ISPF1
R/W
0
FD1
R/W
0
SM59264
ISPF0
bit-0
R/W
05/2009
0
bit-0
FD0
R/W
0