p80c52x2 NXP Semiconductors, p80c52x2 Datasheet - Page 45
p80c52x2
Manufacturer Part Number
p80c52x2
Description
80c51 8-bit Microcontroller Family 4k/8k/16k/32k Rom/otp 128b/256b Ram
Manufacturer
NXP Semiconductors
Datasheet
1.P80C52X2.pdf
(62 pages)
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Philips Semiconductors
2003 Jan 24
WRITE TO SBUF
INSTRUCTION
PORT 0
PORT 2
INPUT DATA
OUTPUT DATA
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)
CLEAR RI
PSEN
ALE
WR
CLOCK
ALE
t
AVLL
0
t
QVXH
FROM RI OR DPL
A0–A7
t
t
1
XHDV
LLAX
t
AVWL
0
t
t
XLXL
VALID
LLWL
V
CC
0.45V
–0.5
P2.0–P2.7 OR A8–A15 FROM DPF
Figure 29. External Data Memory Write Cycle
t
XHQX
2
Figure 30. Shift Register Mode Timing
VALID
1
t
QVWX
Figure 31. External Clock Drive
0.2V
t
CHCL
0.7V
t
CC
t
XHDX
DATA OUT
QVWH
CC
3
t
WLWH
–0.1
VALID
2
45
t
CLCX
4
t
CLCL
VALID
3
t
CHCX
t
CLCH
t
WHLH
t
5
WHQX
VALID
SU00009
4
A0–A7 FROM PCL
A0–A15 FROM PCH
P80C3xX2; P80C5xX2;
6
VALID
5
7
VALID
6
P87C5xX2
INSTR IN
Product data
8
VALID
SU00026
SET TI
SET RI
SU00027
7
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