87C51F Intel Corporation, 87C51F Datasheet - Page 11

• Manufacturer Part Number: 87C51F
• Description: CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

AC CHARACTERISTICS
tance for Port 0 ALE PROG and PSEN
(Continued)
ADVANCED INFORMATION CONTACT INTEL FOR DESIGN-IN INFORMATION
EXTERNAL PROGRAM MEMORY CHARACTERISTICS
NOTE
FB FC timings
Timings specified for the 87C51FC-20 are valid at 20 MHz only For timing information below 20 MHz use the 87C51FA
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
QVWX
WHQX
QVWH
RLAZ
WHLH
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 WR Low
Data Valid before WR Low
Data Hold after WR High
Data Valid to WR High
RD Low to Address Float
RD or WR High to ALE High
Parameter
(T
A
e b
40 C to
e
100 pF Load Capacitance for All Other Outputs
Min
200
203
433
33
33
43
Oscillator
0
12 MHz
a
125 C V
Max
252
107
517
585
300
123
0
AUTOMOTIVE 87C51FA FB FC FC-20
CC
4T
7T
7T
4T
3T
87C51FA FB FC 87C51FC-20
T
T
T
T
T
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
e
CLCL
Min
5V
0
Variable Oscillator
b
b
b
b
b
b
b
b
b
(Continued)
b
g
130
50
35
50
40
150
90
70
40
50
20% V
5T
8T
9T
5T
8T
9T
2T
3T
T
SS
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
e
Max
0
b
b
b
0V Load Capaci-
b
b
b
a
b
a
165
150
165
95
90
90
40
60
50
e
Units
80 pF)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
11