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83C51KB 数据表(PDF) 16 Page - Intel Corporation

部件名 83C51KB
功能描述  HIGH PERFORMANCE KEYBOARD MICROCONTROLLER
PDF  19 Pages
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制造商  INTEL [Intel Corporation]
网页  http://www.intel.com
标志 INTEL - Intel Corporation

83C51KB 数据表(HTML) 16 Page - Intel Corporation

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83C51KB HIGH PERFORMANCE KEYBOARD MICROCONTROLLER
6.2 A.C. Characteristics
Table 8. A.C. Characteristics (Note 1, 2)
Symbol
Parameter
Min
Max
Unit
FOSC
RCIN Frequency
4
6
MHz
TOSC
1/Fosc
166.7
250
ns
TLHLL
ALE Pulse Width
2Tosc - 50
·ns
TAVLL
Address Valid to ALE Low
Tosc - 50
·ns
TLLAX
Address Hold after ALE Low
Tosc - 40
·ns
TLLIV
ALE Low to Valid Instruction In
4Tosc - 80
ns
TLLPL
ALE Low to PSEN# Low
Tosc - 40
ns
TPLPH
Psen# Pulse Width
3Tosc - 60
ns
TPLIV
Psen# Low to Valid Instruction In
3Tosc - 90
ns
TPXIX
Input Instruction Hold after PSEN#
0
ns
TPXIZ
Input Instruction Float after PSEN#
Tosc - 20
ns
TAVIV
Address Valid to Valid Instruction In
5Tosc - 90
ns
TPLAZ
Psen# Low to Address Float
20
ns
TRLRH
RD# Pulse Width
6Tosc - 120
ns
TWLWH
Write# Pulse Width
6Tosc - 120
ns
TRLDV
RD# Low to Valid Data In
5Tosc - 150
ns
TRHDX
Input Data Hold after RD# High
0
ns
TRHDZ
Input Data Float after RD# High
2Tosc - 45
ns
TLLDV
ALE Low to Valid Data In
8Tosc - 130
ns
TAVDV
Address Valid to Valid Data In
9Tosc - 145
ns
TLLWL
ALE Low to RD# or WR# Low
3Tosc - 70
3Tosc + 70
ns
TAVWL
Address Valid to WR# Low
4Tosc - 150
ns
TQVWX
Output Data Valid before WR#
Tosc - 70
ns
TQVWH
Output Data Valid to WR# High
7Tosc - 170
ns
TWHQX
Output Data Hold after WR# High
Tosc - 60
ns
TRLAZ
RD# Low to Address Float
0
ns
TWHLH
RD# or WR# High to ALE High
Tosc - 55
Tosc + 40
ns
TPOR
Power on reset internal high time (note 3)
80
260
ms
NOTE:
1.
Capacitive loading=100pF
2.
Rise time and fall time = 20ns for external clock drive
3.
TPOR timing begins when the voltage exceeds the VPOR crossover voltage.



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