CY7C421-25JIT Cypress Semiconductor, CY7C421-25JIT Datasheet - Page 10

• Manufacturer Part Number: CY7C421-25JIT
• Manufacturer: Cypress Semiconductor

Switching Waveforms
Document #: 38-06001 Rev. *E
Notes
12. EF, HF and FF may change state during retransmit as a result of the offset of the read and write pointers, but flags are valid at t
13. 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
[13]
FIRST WRITE
FIRST READ
Figure 9. Retransmit
t
t
WEF
RFF
t
RTR
ADDITIONAL
ADDITIONAL
WRITES
READS
[12]
FIRST WRITE
FIRST READ
VALID
RTC
.
CY7C421
Page 10 of 20
[+] Feedback