CY7C148 查看數據表（PDF） - Cypress Semiconductor
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CY7C148 Datasheet PDF : 9 Pages
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CY7C148
CY7C149
Switching Waveforms (continued)
Write Cycle No. 2 (CSControlled)[13]
tWC
ADDRESS
tCW
CS
tAW
tWR
tWP
WE
DATA IN
DATA OUT
DATA UNDEFINED
tDW
DATAIN VALID
tWZ
tDH
HIGH IMPEDANCE
Notes:
13. If CS goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
C148–9
Typical DC and AC Characteristics
NORMALIZED SUPPLY CURRENT
vs.SUPPLY VOLTAGE
1.4
1.2
1.0
ICC
0.8
VIN =5.0V
0.6
TA =25°C
0.4
0.2
ISB
0.0
4.0
4.5
5.0
5.5 6.0
SUPPLY VOLTAGE(V)
NORMALIZED SUPPLY CURRENT
vs.AMBIENT TEMPERATURE
1.2
1.0
ICC
0.8
0.6
0.4
0.2
0.0
−55
VCC =5.0V
VIN =5.0V
ISB
25
125
AMBIENT TEMPERATURE(°C)
OUTPUT SOURCE CURRENT
vs.OUTPUT VOLTAGE
120
100
80
60
VCC =5.0V
TA =25°C
40
20
0
0.0 1.0 2.0 3.0 4.0
OUTPUT VOLTAGE(V)
NORMALIZED ACCESS TIME
vs.SUPPLY VOLTAGE
1.4
1.3
1.2
1.1
TA =25°C
1.0
0.9
0.8
4.0
4.5
5.0
5.5 6.0
SUPPLY VOLTAGE(V)
NORMALIZED ACCESS TIME
vs.AMBIENT TEMPERATURE
1.6
1.4
1.2
1.0
VCC =5.0V
0.8
0.6
−55
25
125
AMBIENT TEMPERATURE(°C)
OUTPUT SINK CURRENT
vs.OUTPUT VOLTAGE
140
120
100
80
60
VCC =5.0V
40
TA =25°C
20
0
0.0
1.0
2.0
3.0 4.0
OUTPUT VOLTAGE(V)
Document #: 38-05059 Rev. **
Page 5 of 9
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