P80C51BH Intel, P80C51BH Datasheet - Page 10

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P80C51BH

Manufacturer Part Number
P80C51BH
Description
Manufacturer
Intel
Datasheet

Specifications of P80C51BH

Cpu Family
MCS51
Device Core Size
8b
Frequency (max)
16MHz
Program Memory Type
ROM
Program Memory Size
4KB
Total Internal Ram Size
128Byte
# I/os (max)
32
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Through Hole
Pin Count
40
Package Type
PDIP
Lead Free Status / Rohs Status
Not Compliant

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AUTOMOTIVE 80C31BH 80C51BH 87C51
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has 5 characters The first char-
acter is always a ‘T’ (stands for time) The other
characters depending on their positions stand for
the name of a signal or the logical status of that
signal The following is a list of all the characters and
what they stand for
AC CHARACTERISTICS
V
Outputs
EXTERNAL PROGRAM AND DATA MEMORY CHARACTERISTICS
10
SS
1 T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
Symbol
A Address
C Clock
D Input data
H Logic level HIGH
I Instruction (program memory contents)
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
AVIV
PLAZ
RLRH
WLWH
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
QVWX
WHQX
RLAZ
WHLH
e
CLCL
0V Load Capacitance for Port 0 ALE and PSEN
e
80 pF)
Oscillator Frequency
87C51 80C51BH 80C31BH
ALE Pulse Width
Address Valid to ALE Low
Address Hold After ALE Low
ALE Low to Valid Instr In
ALE Low to PSEN Low
PSEN Pulse Width
PSEN Low to Valid Instr In
Input Instr Hold After PSEN
Input Instr Float After PSEN
Address Valid to Valid Instr In
PSEN Low to Address Float
RD Pulse Width
WR Pulse Width
RD Low to Valid Data In
Data Hold After RD High
Data Float After RD High
ALE Low to Valid Data In
Address Valid to Valid Data In
ALE Low to RD or WR Low
Address Valid to RD or WR Low
Data Valid to WR Transition
Data Hold After WR High
RD Low to Address Float
RD or WR High to ALE High
Parameter
(T
A
e b
40 C to
Min
127
205
400
400
200
203
12 MHz Osc
28
48
43
23
33
43
0
0
a
For example
125 C V
L Logic level LOW or ALE
P PSEN
Q Output data
R RD signal
T Time
V Valid
W WR signal
X No longer a valid logic level
Z Float
T
T
AVLL
LLPL
Max
224
135
312
252
517
585
300
123
59
10
97
0
e
e
e
CC
Time from ALE Low to PSEN Low
100 pF Load Capacitance for All Other
Time from Address Valid to ALE Low
e
6T
6T
4T
2T
3T
3T
T
T
T
T
T
T
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
5V
CLCL
CLCL
CLCL
Min
3 5
Variable Oscillator
0
0
g
b
b
b
b
b
b
b
b
b
b
b
b
10% (5V
55
35
40
100
100
130
60
50
40
40
45
50
4T
3T
5T
5T
8T
9T
2T
3T
T
T
g
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
12 – 16
20% EPROM Only)
Max
10
0
b
b
b
b
b
b
b
a
b
a
110
115
25
105
165
150
165
40
70
50
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns

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