CY7C421-25DMB QP SEMICONDUCTOR, CY7C421-25DMB Datasheet - Page 9

• Manufacturer Part Number: CY7C421-25DMB
• Manufacturer: QP SEMICONDUCTOR

Specifications of CY7C421-25DMB

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Switching Waveforms
Document #: 38-06001 Rev. *A
Last Write to First Read Full Flag
Last Read to First Write Empty Flag
Notes:
Retransmit
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
R,W
= t
EF
FF
W
W
PRT
R
R
[13]
+ t
RTR
.
t
t
REF
WFF
LAST WRITE
t
LAST READ
A
(continued)
VALID
t
PRT
t
RTC
[14]
FIRST WRITE
FIRST READ
t
t
WEF
RFF
t
RTR
ADDITIONAL
ADDITIONAL
WRITES
READS
FIRST WRITE
FIRST READ
CY7C419/21/25/29/33
VALID
RTC
.
Page 9 of 22
C420–14
C420–12
C420–13