CY7C4241-10JI データシートの表示（PDF） - Cypress Semiconductor
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CY7C4241-10JI Datasheet PDF : 20 Pages
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CY7C4421/4201/4211/4221
CY7C4231/4241/4251
5V
OUTPUT
CL
INCLUDING
JIG AND
SCOPE
Figure 4. AC Test Loads and Waveforms[10, 11]
R1 1.1 KΩ
ALL INPUT PULSES
R2
680Ω
3.0V
GND
≤ 3 ns
90%
10%
90%
10%
≤ 3 ns
Equivalent to:
THÉVENIN EQUIVALENT
420Ω
OUTPUT
1.91V
Switching Characteristics Over the Operating Range
Parameter
Description
tS
tA
tCLK
tCLKH
tCLKL
tDS
tDH
tENS
tENH
tRS
tRSS
tRSR
tRSF
tOLZ
tOE
tOHZ
tWFF
tREF
tPAF
tPAE
tSKEW1
tSKEW2
Clock Cycle Frequency
Data Access Time
Clock Cycle Time
Clock HIGH Time
Clock LOW Time
Data Setup Time
Data Hold Time
Enable Setup Time
Enable Hold Time
Reset Pulse Width[12]
Reset Setup Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z[13]
Output Enable to Output Valid
Output Enable to Output in High-Z[13]
Write Clock to Full Flag
Read Clock to Empty Flag
Clock to Programmable Almost-Full Flag
Clock to Programmable Almost-Full Flag
Skew Time between Read Clock and Write Clock for
Empty Flag and Full Flag
Skew Time between Read Clock and Write Clock for
Almost-Empty Flag and Almost-Full Flag
-10
Min Max
100
2
8
10
4.5
4.5
3
0.5
3
0.5
10
8
8
10
0
3
7
3
7
8
8
8
8
5
10
-15
Min Max
66.7
2
10
15
6
6
4
1
4
1
15
10
10
15
0
3
8
3
8
10
10
10
10
6
15
-25
Min Max
40
2
15
25
10
10
6
1
6
1
25
15
15
25
0
3
12
3
12
15
15
15
15
10
18
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
10. CL = 30 pF for all AC parameters except for tOHZ.
11. CL = 5 pF for tOHZ.
12. Pulse widths less than minimum values are not allowed.
13. Values guaranteed by design, not currently tested.
Document #: 38-06016 Rev. *D
Page 10 of 20
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