sm59364 SyncMOS Technologies,Inc, sm59364 Datasheet - Page 9

• Manufacturer Part Number: sm59364
• Description: 8-bits Micro-controller 64kb Isp Flash & 1kb Ram Embedded
• Manufacturer: SyncMOS Technologies,Inc

FD7 ~FD0 : flash data for ISP function
The ISPFD provide the 8-bit data for ISP function
ISP Flash Control Register (ISPC, $F7)
The START bit is read-only by default, software must write three specific values 55H, AAH and 55H sequentially to the
Any attempt to set START bit will not be allowed without the procedure above.
After START bit set to 1 then the SM59364 hardware circuit will latch address and data bus and hold the program
counter until the START bit reset to 0 when ISP function finished. User does not need to check START bit status by
software method.
One page of flash memory is 512 byte.
To perform byte program/page erase ISP function, user need to specify flash address at first. When performing page
erase function, SM59364 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.
IDMMX-0033
ISPFD register to enable the START bit write attribute. That is:
ISP Flash Data Register (ISPFD, $F6)
Read / Write:
Read / Write:
Reset value:
Reset value:
F[1:0]: ISP function select bit
F[1: 0]: ISP function select bit
START: ISP function start bit
MOV ISPFD, #55H
MOV ISPFD, #0AAH
MOV ISPFD, #55H
F[1:0]
e.g. flash address: $XYMN
= 1: start ISP function which indicated by bit 1, bit 0 (F1, F0)
= 0: no operation
00
01
10
11
SyncMOS Technologies International, Inc.
START
bit-7
FD7
R/W
bit-7
R/W
0
0
Byte program
ISP function
Chip protect
Page erase
Chip erase
Unused
FD6
R/W
0
-
*
Unused
FD5
R/W
0
-
*
Unused
R/W
FD4
9
0
*
-
Unused
R/W
FD3
0
*
-
64KB ISP flash & 1KB RAM embedded
8-Bits Micro-controller
Unused
FD2
R/W
0
*
-
Ver B SM59364 04/2008
ISPF1
FD1
R/W
R/W
0
0
SM59364
ISPF0
bit-0
FD0
R/W
bit-0
R/W
0
0