p87c51mc2ba/02 NXP Semiconductors, p87c51mc2ba/02 Datasheet - Page 25

• Manufacturer Part Number: p87c51mc2ba/02
• Description: 80c51 8-bit Microcontroller Family With Extended Memory
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12302
Product data
Fig 6. External data memory write cycle.
Fig 7. Shift register mode timing.
PORT 0
PORT 2
WRITE TO SBUF
INSTRUCTION
OUTPUT DATA
PSEN
INPUT DATA
ALE
CLEAR RI
WR
CLOCK
ALE
t AVWL
t AVLL
0
t LLAX
P2.0-P2.7 OR
A16-A22,P2.7
t QVXH
A8-A15 OR
A0-A7
t XHDV
1
t XLXL
t LLWL
VALID
0
t QVWX
P2.0-P2.7 OR A8-A15
t XHQX
2
Rev. 03 — 13 November 2003
VALID
1
t AVWL1
DATA OUT
t QVWH
3
t XHDX
VALID
2
t WLWH
P87C51MB2/P87C51MC2
4
VALID
3
5
VALID
4
t WHLH
80C51 8-bit microcontroller family
6
A0-A7 FROM PCL
t WHQX
VALID
5
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7
002aaa153
VALID
6
8
INSTR IN
002aaa155
VALID
7
SET RI
SET TI
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