AN87C51FC 데이터 시트보기 (PDF) - Intel
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AN87C51FC Datasheet PDF : 18 Pages
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AUTOMOTIVE 87C51FA FB FC FC-20
AC CHARACTERISTICS (TA e b40 C to a125 C VCC e 5V g 20% VSS e 0V Load Capaci-
tance for Port 0 ALE PROG and PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF)
(Continued)
ADVANCED INFORMATION CONTACT INTEL FOR DESIGN-IN INFORMATION
EXTERNAL PROGRAM MEMORY CHARACTERISTICS (Continued)
Symbol
Parameter
12 MHz
Oscillator
Min Max
Variable Oscillator
87C51FA FB FC 87C51FC-20
Min
Max
TRLDV RD Low to Valid Data In
TRHDX
TRHDZ
TLLDV
Data Hold After RD High
Data Float After RD High
ALE Low to Valid Data In
TAVDV Address Valid to Valid Data In
TLLWL
TAVWL
ALE Low to RD or WR Low
Address Valid to WR Low
TQVWX Data Valid before WR Low
TWHQX Data Hold after WR High
TQVWH Data Valid to WR High
TRLAZ
TWHLH
RD Low to Address Float
RD or WR High to ALE High
252
0
0
107
517
585
200 300 3TCLCL b 50
203
4TCLCL b 130
4TCLCL b90
33
TCLCL b 50
TCLCL b 35
33
TCLCL b 50
TCLCL b 40
433
7TCLCL b 150
7TCLCL b 70
0
43 123
TCLCL b 40
5TCLCL b 165
5TCLCL b 95
2TCLCL b 60
8TCLCL b 150
8TCLCL b 90
9TCLCL b 165
9TCLCL b 90
3TCLCL a 50
0
TCLCL a 40
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTE
Timings specified for the 87C51FC-20 are valid at 20 MHz only For timing information below 20 MHz use the 87C51FA
FB FC timings
11
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