9 / 15 page
CY7C344
Document #: 38-03006 Rev. **
Page 9 of 15
Switching Waveforms
External Combinatorial
tPD1/tPD2
tER
tEA
VALID OUTPUT
DEDICATED INPUT/
I/O INPUT
COMBINATORIAL
OUTPUT
COMBINATORIAL OR
REGISTERED OUTPUT
C344–8
HIGH-IMPEDANCE
THREE-STATE
HIGH-IMPEDANCE
THREE-STATE
External Synchronous
tH
tS
tWH
tWL
tRR/tPR
tRW/tPW
tOH
tCO1
tRO/tPO
tCO2
C344–9
DEDICATED INPUTS OR
REGISTERED FEEDBACK
SYNCHRONOUS
CLOCK
ASYNCHRONOUS
CLEAR/PRESET
REGISTERED
OUTPUTS
COMBINATORIAL OUTPUT FROM
REGISTERED FEEDBACK [12]
tACO1
External Asynchronous
tAH
tAS
tAWH
tAWL
tRR/tPR
tRW/tPW
tAOH
tRO/tPO
tACO2
ASYNCHRONOUS
CLOCK INPUT
ASYNCHRONOUS REGISTERED
OUTPUTS
DEDICATED INPUTS OR
REGISTERED FEEDBACK
ASYNCHRONOUS
CLEAR/PRESET
COMBINATORIAL OUTPUT FROM
ASYNCH. REGISTERED
FEEDBACK
C344–10
[
19]