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P87C453EBAA Datasheet(PDF) 18 Page - NXP Semiconductors

Part # P87C453EBAA
Description  80C51 8-bit microcontroller family 8K/256 OTP/ROM, expanded I/O
PDF  26 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P87C453EBAA Datasheet(HTML) 18 Page - NXP Semiconductors

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Philips Semiconductors
Preliminary specification
83C453/87C453
80C51 8-bit microcontroller family
8K/256 OTP/ROM, expanded I/O
1998 Apr 23
18
tLLAX
ALE
PSEN
PORT 0
PORT 2
WR
A0–A7
FROM RI OR DPL
DATA OUT
A0–A7 FROM PCL
INSTR IN
P2.0–P2.7 OR A8–A15 FROM DPH
A0–A15 FROM PCH
tWHLH
tLLWL
tWLWH
tAVLL
tAVWL
tQVWX
tWHQX
SU00008
Figure 11. External Data Memory Write Cycle
0
1
2
3
4
5
678
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE TO SBUF
INPUT DATA
CLEAR RI
VALID
VALID
VALID
VALID
VALID
VALID
VALID
VALID
SET TI
SET RI
tXLXL
tQVXH
tXHQX
tXHDX
tXHDV
SU00027
12
3
0
456
7
Figure 12. Shift Register Mode Timing



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