參數(shù)資料
型號: HMS99C58S
廠商: Electronic Theatre Controls, Inc.
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS WITH EMBEDDED FLASH
中文描述: 8位單片機與嵌入式閃存微控制器
文件頁數(shù): 54/73頁
文件大?。?/td> 696K
代理商: HMS99C58S
HMS99C51S/52S/54S/56S/58S
50
Sep. 2004 Ver 1.01
SFR Register for a ISP Mode
FCON register exists in D1
H
in SFR region and defines selection of Flash register operation, R/W for a Flash
Registers, BOOT Flash usage, selection of Flash Memory Space and selection of Program location.
FCON (Flash Control) Register : D1
H
D0
H
PCON
00000000
B
FCON
00000000
B
-
-
-
-
D7
H
Table 15. SFR Register for a Flash memory
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
FRSEL2
FRSEL1
FRSEL0
ERASESEL
ENBOOT
INTROM_EN
PGMSEL1
PGMSEL0
Bit No
Bit Mnemonic
Description
7~5
FRSEL[2:0]
Select Register Operation for Flash Access
This bits define register operation for Flash Memory Access
See Figure 16.
4
ERASESEL
ERASESEL
0 : Erase Mode is deselected
1 : Erase Mode is selected
3
ENBOOT
Enable Boot Flash
Cleared to disable boot ROM
Set to map the boot ROM between F800
H
~ 0FFFF
H
.
2
INTROM_EN
Internal ROM Access Enable bit
0 : External Memory Access over 32K bytes
1 : Internal Memory Access to use Boot ROM
1~0
PGMSEL[1:0]
The Program Location Select
00 : Reserved
01 : 1 Byte Program
10 : 4 Byte Program
11 : 8 Byte Program
FRSEL[2:0]
Operation
0 (000
B
)
Default
Verify / Read
Reset CONTREG [7:0]
DATA_BUS [7:0]
ACC[7:0]
4 (100
B
)
Write Address and Data
DPTR[14:0]
ADDREG[14:0]
ACC[7:0]
DATAREG[7:0]
5 (101
B
)
Write CONTREG
ACC[7:0]
CONTREG[7:0]
6 (110
B
)
Write EBR
ACC[7:0]
EBR[6:0]
7 (111
B
)
Write PWR
ACC[7:0]
PWR[7:0]
Table 16. Register Operation Table for Flash Access
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