參數(shù)資料
型號: F497
廠商: Fujitsu Limited
英文描述: 16-bit Proprietary Microcontroller CMOS
中文描述: 16位微控制器專有的CMOS
文件頁數(shù): 28/40頁
文件大?。?/td> 484K
代理商: F497
MB90495 Series
MB90495 Series Data Sheet (Advance Information)
28 / 40
FMG EMDC June 19, 2000
14.5 External Bus Timing (Read)
(T
A
= –40 to +85
°
C, V
CC
= 4.5 to 5.5 V, V
SS
= 0 V)
Parameter
Symbol
Pin
Test Condition
Rated Value
Units
Remarks
Min.
Max.
ALE pulse width
t
LHLL
ALE
t
CP
/2 – 20
ns
Valid address
ALE
time
t
AVLL
ALE,
A23 - A16,
AD15 - AD00
t
CP
/2 – 20
ns
ALE
Address valid time
t
LLAX
ALE,
AD15 - AD00
t
CP
/2 – 15
ns
Valid address
RD
time
t
AVRL
A23 - A16,
AD15-AD00,
RD
t
CP
– 15
ns
Valid address
Valid data
input
t
AVDV
A23 - A16,
AD15 - AD00
5 t
CP
/2 – 60
ns
RD pulse width
t
RLRH
RD
3 t
CP
/2 – 20
ns
RD
Valid data input
t
RLDV
RD,
AD15 - AD00
3 t
CP
/2 – 60
ns
RD
Data hold time
t
RHDX
RD,
AD15 - AD00
0
ns
RD
ALE
time
t
RHLH
RD, ALE
t
CP
/2 – 15
ns
RD
Address valid time
t
RHAX
RD,
A23 - A16
t
CP
/2 – 10
ns
Valid address
CLK
time
t
AVCH
A23 - A16,
AD15-AD00,
CLK
t
CP
/2 – 20
ns
RD
CLK
time
t
RLCH
RD, CLK
t
CP
/2 – 20
ns
ALE
RD
time
t
LLRL
ALE, RD
t
CP
/2 – 15
ns
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