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SC80C31BAGA44 Datasheet(PDF) 18 Page - NXP Semiconductors

Part # SC80C31BAGA44
Description  CMOS single-chip 8-bit microcontrollers
PDF  30 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

SC80C31BAGA44 Datasheet(HTML) 18 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
80C31/80C51/87C51
CMOS single-chip 8-bit microcontrollers
1996 Aug 16
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 3. External Data Memory Write Cycle
0
1
2
3
4
5
6
7
8
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
1
2
3
0
4
5
6
7
Figure 4. Shift Register Mode Timing
VCC–0.5
0.45V
0.7VCC
0.2VCC–0.1
tCHCL
tCLCL
tCLCH
tCLCX
tCHCX
SU00009
Figure 5. External Clock Drive



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