CY7C421-15VI Cypress Semiconductor Corp, CY7C421-15VI Datasheet - Page 6

• Manufacturer Part Number: CY7C421-15VI
• Description: FIFO Mem Async Dual Depth/Width Uni-Dir 512 x 9 28-Pin SOJ
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C421-15VI

• Package: 28SOJ
• Configuration: Dual
• Bus Directional: Uni-Directional
• Density: 4.5 Kb
• Organization: 512x9
• Data Bus Width: 9 Bit
• Timing Type: Asynchronous
• Expansion Type: Depth|Width
• Typical Operating Supply Voltage: 5 V
• Operating Temperature: -40 to 85 °C

Document #: 38-06001 Rev. *B
Switching Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Parameter
EFL
HFH
FFH
REF
RFF
WEF
WFF
WHF
RHF
RAE
RPE
WAF
WPF
XOL
XOH
MR to EF LOW
MR to HF HIGH
MR to FF HIGH
Read LOW to EF LOW
Read HIGH to FF HIGH
Write HIGH to EF HIGH
Write LOW to FF LOW
Write LOW to HF LOW
Read HIGH to HF HIGH
Effective Read from Write HIGH
Effective Read Pulse Width After EF HIGH
Effective Write from Read HIGH
Effective Write Pulse Width After FF HIGH
Expansion Out LOW Delay from Clock
Expansion Out HIGH Delay from Clock
Description
Over the Operating Range
[7, 8]
Min.
7C419–10
7C421–10
7C425–10
7C429–10
7C433–10
10
10
(continued)
Max.
20
20
20
10
10
10
10
10
10
10
10
10
10
Min.
7C419–15
7C421–15
7C425–15
7C429–15
7C433–15
15
15
Max.
25
25
25
15
15
15
15
15
15
15
15
15
15
CY7C419/21/25/29/33
Min.
7C420–20
7C421–20
7C424–20
7C425–20
7C428–20
7C429–20
7C433–20
20
20
Max.
30
30
30
20
20
20
20
20
20
20
20
20
20
Min.
7C420–25
7C421–25
7C424–25
7C425–25
7C429–25
7C432–25
7C433–25
25
25
Max.
Page 6 of 25
35
35
35
25
25
25
25
25
25
25
25
25
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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