CY7C421-20VXC Cypress Semiconductor Corp, CY7C421-20VXC Datasheet - Page 8
![IC ASYNC FIFO MEM 512X9 28-SOJ](/photos/7/9/70998/428-28-soj_sml.jpg)
CY7C421-20VXC
Manufacturer Part Number
CY7C421-20VXC
Description
IC ASYNC FIFO MEM 512X9 28-SOJ
Manufacturer
Cypress Semiconductor Corp
Series
CY7Cr
Datasheet
1.CY7C421-20JXC.pdf
(17 pages)
Specifications of CY7C421-20VXC
Access Time
10ns
Memory Size
4.6K (512 x 9)
Package / Case
28-SOJ
Function
Asynchronous
Data Rate
50MHz
Voltage - Supply
3.3V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Number Of Circuits
2
Data Bus Width
9 bit
Bus Direction
Unidirectional
Timing Type
Asynchronous
Organization
512 K x 9
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Current
55 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CY7C421-20VXC
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
Switching Waveforms
Document #: 38-06001 Rev. *C
Notes
13. EF, HF and FF may change state during retransmit as a result of the offset of the read and write pointers, but flags will be valid at t
14. t
DATA OUT
RTC
FL/RT
= t
R,W
PRT
FF
EF
W
W
R
R
+ t
RTR
.
t
t
REF
WFF
LAST WRITE
LAST READ
t
A
VALID
(continued)
Figure 8. Last Read to First Write Empty Flag
Figure 7. Last Write to First Read Full Flag
t
PRT
t
RTC
[14]
FIRST WRITE
FIRST READ
Figure 9. Retransmit
t
t
WEF
RFF
t
RTR
ADDITIONAL
ADDITIONAL
WRITES
READS
[13]
FIRST WRITE
FIRST READ
CY7C419/21/25/29/33
VALID
RTC
.
Page 8 of 17
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