W77LE58_07 Datasheet, PDF (8/82 Pages) Winbond – 8-BIT MICROCONTROLLER

W77LE58/W77L058A
FFh
Indirect RAM
80h
7Fh
Direct RAM
30h
2Fh 7F
7E
7D
7C
7B
7A
79
78
2Eh 77
76
75
74
73
72
71
70
2Dh 6F
6E
6D
6C
6B
6A
69
68
2Ch 67
66
65
64
63
62
61
60
2Bh 5F
5E
5D
5C
5B
5A
59
58
2Ah 57
56
55
54
53
52
51
50
29h 4F
4E
4D
4C
4B
4A
49
48
28h 47
46
45
44
43
42
41
40 _{Bit Addressable}
27h 3F
3E
3D
3C
3B
3A
39
38
26h 37
36
35
34
33
32
31
30 ^20H−2FH
25h 2F
2E
2D
2C
2B
2A
29
28
24h 27
26
25
24
23
22
21
20
23h 1F
1E
1D
1C
1B
1A
19
18
22h 17
16
15
14
13
12
11
10
21h 0F
0E
0D
0C
0B
0A
09
08
20h 07
06
05
04
03
02
01
00
1Fh
18h
Bank 3
17h
10h
Bank 2
0Fh
08h
Bank 1
07h
00h
Bank 0
Figure 2. Scratchpad RAM/Register Addressing
Special Function Registers
The W77L058 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 W77L058 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.
-8-