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參數(shù)資料
型號: W921C880
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位微控制器)
中文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 11/57頁
文件大小: 372K
代理商: W921C880
W921E880A/W921C880
Publication Release Date: September 1998
- 11 -
Revision A2
6.2 RAM Memory Map
000H
SPECIAL CONTROL REG.
SERIAL CONTROL REG.
STACK REG.
OR GENERAL REG.
OR GENERAL REG.
03FH
040H
04FH
050H
07FH
080H
0FFH
100H
17FH
180H
1FFH
200H
000
063
064
079
080
127
128
255
256
383
384
511
512
WORKING REG.
1023
3FFH
GENERAL REG.
STACK REG.
(40H - FFH)
BANK0 BANK1
GENERAL REG.
SERIAL CONTROL REG.
(50H - 14EH)
SERIAL CONTROL REG.
6.2.1 Special Control Reg. Area
There are 64 reg.
×
4 bits in the special control register area. All control registers such as the DTMF
Control Reg., System Clock Control Reg. ...etc. are in this area. Please refer to the Spesial Control
Reg. Format.
Bank Select Reg.
BKSR REG: (ADDRESS = 001H)
(Default data = 0H)
b3
b2
b1
b0
Reserved
b0
0
1
BANK NO.
0
1
b1
0
0
1
1
0
1
Reserved
Reserved
Reserved
The Bank Select Reg. can select the active bank. The memory size of each bank is 512
*
4 bits. Bank 0 and bank 1 are normal
SRAM.
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