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參數資料
型號: W742C810
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT MICROCONTROLLER
中文描述: 4-BIT, MROM, 3.58 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 2.75 MM HEIGHT, QFP-100
文件頁數: 10/42頁
文件大小: 501K
代理商: W742C810
Preliminary W742C810
- 10 -
0000H
:
16 bits
8192 * 16 bits
07FFH
0800H
:
0400H
:
:
:
Each element (4 bits) of the look-up table
03FFH
0FFFH
1000H
:
0C00H
:
0BFFH
1st page
17FFH
1800H
1400H
:
13FFH
1C00H
:
1FFFH
1BFFH
:
2nd page
3rd page
4th page
Look-up0000H
0F:
Look-up1000H
1F:
Look-up2000H
2F:
Look-up3000H
3F:
Look-up4000H
4F:
Look-up5000H
5F:
Look-up6000H
6F:
Look-up7000H
7F:
Figure 6-1 Program Memory Organization
6.3.1 ROM Page Register (ROMPR)
The ROM page register is organized as a 4-bit binary register. The bit descriptions are as follows:
R/W
R/W
0
1
2
3
ROMPR
Note: R/W means read/write available.
Bit 3 & Bit 2 is reserved.
Bit 1, Bit 0 ROM page preselect bits:
00 = ROM page 0 (0000H - 07FFH)
01 = ROM page 1 (0800H - 0FFFH)
10 = ROM page 2 (1000H - 17FFH)
11 = ROM page 3 (1800H - 1FFFH)
6.4 Data Memory (RAM)
6.4.1 Architecture
The static data memory (RAM) used to store data is arranged as 1024
×
4 bits. The data RAM is
divided into eight banks; each bank has 128
×
4 bits. Executing the MOV DBKR,WR or MOV
DBKR,#I instruction can determine which data bank is used. The data memory can be addressed
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