參數資料
型號: HMS77C1000A
廠商: Hynix Semiconductor Inc.
元件分類: 數學處理器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數: 33/45頁
文件大?。?/td> 549K
代理商: HMS77C1000A
HMS77C1000A/HMS77C1001A
30
Oct. 2001 Ver. 2.0
12. CONFIGURATION AREA
The device configuration area can be programmed or left
unprogrammed to select device configurations such as os-
cillator type, security bit or watchdog timer enable bit.
Four memory locations [AAAH ~ (AAA+3)
H
] are desig-
nated as customer ID recording locations where the user
can store check-sum or other customer identification num-
bers. These area are not accessible during normal execu-
tion but are readable and writable during program/verify
mode. It is recommended that only the 4 least significant
bits of ID recording locations are used.
FIGURE 12-1 DEVICE CONFIGURATION AREA
bit0
3
-
ID0
bit11
4
-
ID1
-
ID2
-
ID3
AAA
H
AAA
H
+1
AAA
H
+2
AAA
H
+3
Configuration Word
FFF
H
FIGURE 12-2 CONFIGURATION WORD FOR HMS77C100XA
bit11
bit0
4
3
2
1
bit 3
CP
: Code protection bit.
1 = Code protection disabled
0 = Code protection enabled
bit 2
WDTE
: Watchdog timer enable bit
1 = WDT enabled
0 = WDT disabled
bit 1-0
FOSC1:FOSC0
: Oscillator selection bits
11 = RC oscillator
10 = HF oscillator
01 = XT oscillator
00 = LF oscillator
Address
: FFF
H
CP
WDTE FOSC1 FOSC0
-
Unimplemented, read as ‘0’
Configuration Word
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