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P80C31X2 View Datasheet(PDF) - NXP Semiconductors.

Part Name
Description
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P80C31X2 Datasheet PDF : 62 Pages
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Philips Semiconductors
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
ALE
PSEN
tWHLH
WR
PORT 0
PORT 2
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE TO SBUF
INPUT DATA
CLEAR RI
tLLWL
tWLWH
tAVLL
tLLAX
A0–A7
FROM RI OR DPL
tAVWL
tQVWX
tQVWH
DATA OUT
P2.0–P2.7 OR A8–A15 FROM DPF
tWHQX
A0–A7 FROM PCL
A0–A15 FROM PCH
Figure 29. External Data Memory Write Cycle
0
1
2
3
4
5
6
7
INSTR IN
SU00026
8
tXLXL
tQVXH
tXHQX
0
tXHDV
VALID
1
2
tXHDX
VALID
VALID
3
VALID
4
5
VALID
VALID
6
VALID
Figure 30. Shift Register Mode Timing
7
SET TI
VALID
SET RI
SU00027
VCC–0.5
0.45V
0.7VCC
0.2VCC–0.1
tCHCL
tCLCX
tCHCX
tCLCH
tCLCL
Figure 31. External Clock Drive
SU00009
2003 Jan 24
45
 

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