參數資料
型號: W77LE58F-25
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數: 10/81頁
文件大?。?/td> 657K
代理商: W77LE58F-25
Preliminary W77LE58
- 10 -
FFh
80h
7Fh
30h
2Fh
2Eh
2Dh
2Ch
2Bh
2Ah
29h
28h
27h
26h
25h
24h
23h
22h
21h
20h
1Fh
18h
17h
10h
0Fh
08h
07h
00h
78
70
68
60
58
50
48
40
38
30
28
20
18
10
08
00
79
71
69
61
59
51
49
41
39
31
29
21
19
11
09
01
7A
72
6A
62
5A
52
4A
42
3A
32
2A
22
1A
12
0A
02
7B
73
6B
63
5B
53
4B
43
3B
33
2B
23
1B
13
0B
03
7C
74
6C
64
5C
54
4C
44
3C
34
2C
24
1C
14
0C
04
7D
75
6D
65
5D
55
4D
45
3D
35
2D
25
1D
15
0D
05
7E
76
6E
66
5E
56
4E
46
3E
36
2E
26
1E
16
0E
06
7F
77
6F
67
5F
57
4F
47
3F
37
2F
27
1F
17
0F
07
Indirect RAM
Direct RAM
Bank 3
Bank 2
Bank 1
Bank 0
Bit Addressable
20H
2FH
Figure 2. Scratchpad RAM/Register Addressing
Special Function Registers
The W77LE58 uses Special Function Registers (SFRs) to control and monitor peripherals and their
Modes.
The SFRs reside in the register locations 80-FFh and are accessed by direct addressing only. Some
of the SFRs are bit addressable. This is very useful in cases where one wishes to modify a particular
bit without changing the others. The SFRs that are bit addressable are those whose addresses end in
0 or 8. The W77LE58 contains all the SFRs present in the standard 8052. However, some additional
SFRs have been added. In some cases unused bits in the original 8052 have been given new
functions. The list of SFRs is as follows. The table is condensed with eight locations per row. Empty
locations indicate that there are no registers at these addresses. When a bit or register is not
implemented, it will read high.
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