83C453 Philips Semiconductors, 83C453 Datasheet - Page 18
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83C453
Manufacturer Part Number
83C453
Description
80C51 8-bit microcontroller family 8K/256 OTP/ROM/ expanded I/O
Manufacturer
Philips Semiconductors
Datasheet
1.83C453.pdf
(26 pages)
- Current page: 18 of 26
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Philips Semiconductors
1998 Apr 23
WRITE TO SBUF
INSTRUCTION
PORT 0
PORT 2
INPUT DATA
OUTPUT DATA
80C51 8-bit microcontroller family
8K/256 OTP/ROM, expanded I/O
CLEAR RI
PSEN
ALE
WR
CLOCK
ALE
t
AVLL
0
t
QVXH
FROM RI OR DPL
A0–A7
t
t
1
XHDV
LLAX
t
AVWL
0
t
t
XLXL
VALID
LLWL
P2.0–P2.7 OR A8–A15 FROM DPH
Figure 11. External Data Memory Write Cycle
t
XHQX
2
Figure 12. Shift Register Mode Timing
1
VALID
t
QVWX
t
XHDX
DATA OUT
3
t
WLWH
2
VALID
18
4
VALID
3
t
WHLH
t
5
WHQX
VALID
4
A0–A7 FROM PCL
A0–A15 FROM PCH
6
VALID
5
83C453/87C453
7
Preliminary specification
VALID
6
INSTR IN
8
SU00008
SET TI
VALID
SET RI
SU00027
7
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