MSM6242B
SWITCHING CHARACTERISTICS
(1) WRITE mode (ALE = VDD)
Parameter
CS1 Set up Time
CS1 Hold Time
Address Stable Before
WRITE
Address Stable After
WRITE
WRITE Pulse Width
Data Set up Time
Data Hold Time
RD / WR Recovery Time
Symbol
tC1S
tC1H
tAW
tWA
tWW
tDS
tDH
tRCV
Condition
—
—
—
—
—
—
—
—
¡ Semiconductor
(VDD = 5V ± 10% Ta = -40 to +85°C)
Min.
Max.
Unit
1000
—
1000
—
20
—
10
—
ns
120
—
100
—
10
—
60
—
CS1
A0 ~ A3
CS0
WR
D0 ~ D3
(INPUT)
VIH2 –
VIH1 –
VIL1 –
VIH1 –
VIH1 –
VIL1 –
tC1S
tC1H
,,,
,,,,,,,,,
tAW
,,,, ,,,
tWW
tDS
tW,,tA,DH,,t,R,C,V,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,
Figure 4. Write Cycle — (ALE = VDD)
VIH1 = 2.2V
VIL1 = 0.8V
VIH2 = 4/5VDD
VIL2 = 1/5VDD
(2) WRITE mode (With use of ALE)
Parameter
CS1 Set up Time
Address Set up Time
Address Hold Time
ALE Pulse Width
ALE Before WRITE
WRITE Pulse Width
ALE After WRITE
DATA Set up Time
DATA Hold Time
CS1 Hold Time
RD / WR Recovery Time
Symbol
tC1S
tAS
tAH
tAW
tALW
tWW
tWAL
tDS
tDH
tC1H
tRCV
Condition
—
—
—
—
—
—
—
—
—
—
—
(VDD = 5V ± 10%, Ta = -40 ~ +85°C)
Min.
Max.
Unit
1000
—
25
—
25
—
40
—
10
—
ns
120
—
20
—
100
—
10
—
1000
—
60
—
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