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CY7C421(2002) Просмотр технического описания (PDF) - Cypress Semiconductor

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CY7C421
(Rev.:2002)
Cypress
Cypress Semiconductor Cypress
CY7C421 Datasheet PDF : 22 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Switching Waveforms (continued)
Last Write to First Read Full Flag
LAST WRITE
R
CY7C419/21/25/29/33
FIRST READ
ADDITIONAL
READS
FIRST WRITE
W
tWFF
FF
tRFF
Last Read to First Write Empty Flag
LAST READ
W
R
EF
DATA OUT
tREF
tA
VALID
FIRST WRITE
ADDITIONAL
WRITES
FIRST READ
tWEF
VALID
Retransmit[13]
FL/RT
tRTC[14]
tPRT
C42012
C42013
R,W
tRTR
C42014
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 tRTC.
14. tRTC = tPRT + tRTR.
Document #: 38-06001 Rev. *A
Page 9 of 22

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