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MSM80C154S Datasheet

  • MSM80C154S

  • USER'S MANUAL

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隆 Semiconductor
AC Characteristics
(1) External program memory access AC characteristics
MSM80C154S/83C154S
V
CC
=2.2 to 6.0V, V
SS
=0V, Ta=鈥?0掳C to +85掳C
PORT 0, ALE, and
PSEN
connected with 100pF load, other connected with 80pF load
Variable clock from*1
Parameter
XTAL1, XTAL 2 Oscillation Cycle
ALE Signal Width
Address Setup Time
(to ALE Falling Edge)
Address Hold Time
(from ALE Falling Edge)
Instruction Data Read Time
(from ALE Falling Edge)
From ALE Falling Edge to
PSEN
Falling Edge
PSEN
Signal Width
Instruction Data Read Time
(from
PSEN
Falling Edge)
Instruction Data Hold Time
(from
PSEN
Rising Edge)
Bus Floating Time after Instruction
Data Read (from
PSEN
Rising Edge)
Instruction Data Read Time
(from Address Output)
Bus Floating Time(PSEN Rising
Edge from Address float)
Address Output Time from
PSEN
Rising Edge
Symble
Min.
t
CLCL
t
LHLL
t
AVLL
t
LLAX
t
LLPL
t
LLPL
t
PLPH
t
PLIV
t
PXIX
t
PXIZ
t
AVIV
t
AZPL
t
PXAV
41.7
2t
CLCL
-40
1t
CLCL
-15
1t
CLCL
-35
鈥?/div>
1t
CLCL
-30
3t
CLCL
-35
鈥?/div>
0
鈥?/div>
鈥?/div>
0
1t
CLCL
-20
1 to 24 MHz
Max.
1000
鈥?/div>
鈥?/div>
鈥?/div>
4t
CLCL
-100
鈥?/div>
鈥?/div>
3t
CLCL
-45
鈥?/div>
1t
CLCL
-20
5t
CLCL
-105
鈥?/div>
鈥?/div>
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
*1 The variable check is from 0 to 24 MHz when the external check is used.
29/40

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