p87c51mc2 NXP Semiconductors, p87c51mc2 Datasheet - Page 26
p87c51mc2
Manufacturer Part Number
p87c51mc2
Description
80c51 8-bit Microcontroller Family With Extended Memory
Manufacturer
NXP Semiconductors
Datasheet
1.P87C51MC2.pdf
(34 pages)
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p87c51mc2BA
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ST
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Manufacturer:
PHILIPS/飞利浦
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NXP Semiconductors
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538
2001 Apr 06
Philips Semiconductors
WRITE TO SBUF
OUTPUT DATA
80C51 8-bit microcontroller family with extended memory
64KB/96KB OTP with 2KB/3KB RAM
INPUT DATA
INSTRUCTION
CLEAR RI
PORT 0
PORT 2
PSEN
ALE
WR
CLOCK
ALE
0
t
AVLL
Figure 6: External Data Memory Write Cycle (Extended Memory Cycle)
t
QVXH
t
LLAX
A16-A22,P2.7
A0-A7
1
t
XHDV
VALID
t
0
XLXL
t
LLWL
t
t
XHQX
2
Figure 7: Shift Register Mode Timing
QVWX
VALID
1
t
AVWL1
t
XHDX
3
VALID
2
DATA OUT
t
A8-A15
QVWH
26
t
WLWH
4
VALID
3
5
VALID
4
t
WHLH
6
P87C51MB2/P87C51MC2
t
WHQX
VALID
5
A0-A7 FROM PCL
7
VALID
6
Preliminary specification
8
VALID
7
INSTR IN
SET RI
SET TI
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