w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 24
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w83l950d
Manufacturer Part Number
w83l950d
Description
Peripheral Personal Computer Keyboard Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83L950D.pdf
(105 pages)
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6.9
Some of the SFRs are also bit addressable. The instruction decoder is able to distinguish a bit access
from a byte access by the type of the instruction itself. The following table lists the bit addressable SFR
only.
As the below table shown, it is different with traditional industry standard micro-processor 8052, only
register ACC, B and PSW are still populated in this bit-addressable table, the others were removed and
instead of nine GPIO registers. This may provide a quickly response to firmware’s GPIO operation.
The discontinued gaps of the SFR bit addressable location, 0C8h or 0D8h etc, are not available and
undefined. Access to them may result in unknown error.
D0H
C0H
B0H
A8H
A0H
FFH
F0H
E0H
B8H
98H
90H
88H
80H
SFR Bit Addressable Location
GP8.7
GP7.7
GP6.7
GP5.7
GP4.7
GP3.7
GP2.7
GP1.7
GP0.7
CY
D7
BF
AF
A7
E7
C7
B7
F7
9F
97
8F
87
GP8.6
GP7.6
GP6.6
GP5.6
GP4.6
GP3.6
GP2.6
GP1.6
GP0.6
AC
BE
D6
C6
B6
A6
F6
E6
9E
8E
96
86
GP8.5
GP7.5
GP6.5
GP5.5
GP4.5
GP3.5
GP2.5
GP1.5
GP0.5
BD
AD
F0
D5
C5
B5
A5
9D
8D
F5
E5
95
85
Fig 5.2. Bit Address Location
GP8.4
GP7.4
GP6.4
GP5.4
GP4.4
GP3.4
GP2.4
GP1.4
GP0.4
RS1
BC
AC
D4
A4
E4
C4
B4
9C
8C
F4
94
84
GP8.3
GP7.3
GP6.3
GP5.3
GP4.3
GP3.3
GP2.3
GP1.3
GP0.3
- 15 -
RS0
BB
AB
D3
C3
B3
A3
9B
8B
F3
E3
93
83
GP8.2
GP7.2
GP6.2
GP5.2
GP4.2
GP3.2
GP2.2
GP1.2
GP0.2
OV
Publication Release Date: June 23, 2003
BA
AA
E2
D2
C2
B2
A2
9A
8A
F2
92
82
GP8.1
GP7.1
GP6.1
GP5.1
GP4.1
GP3.1
GP2.1
GP1.1
GP0.1
D1
A9
A1
E1
C1
B9
B1
F1
99
91
89
81
W83L950D
GP8.0
GP7.0
GP6.0
GP5.0
GP4.0
GP3.0
GP2.0
GP1.0
GP0.0
D0
C0
B8
B0
A8
A0
F0
E0
98
90
88
80
P
Revision 1.0
ACC
PSW
GP8
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
B
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