CY2048WAF
Document #: 38-07738 Rev. *A Page 5 of 7
Timing Parameters over the operating range
Parameter Description Min. Max. Unit
TSTP,SYNC Time from falling edge on PD# to stopped output, synchronous mode, T=1/Fout 1.5T + 350 ns
TSTP,ASYNC Time from falling edge on PD# to stopped output, asynchronous mode 350 ns
TPU,SYNC Time from rising edge on PD# to output at valid frequency, synchronous mode,
T=1/F
out
3ms
TPU,ASYNC Time from rising edge on PD# to output at valid frequency, asynchronous mode 3 ms
TPZX,SYNC Time from rising edge on OE to running output, synchronous mode, T=1/Fout 1.5T + 350 ns
TPZX,ASYNC Time from rising edge on OE to running output, asynchronous mode 350 ns
TPXZ,SYNC Time from falling edge on OE to high impedance output, synchronous mode,
T=1/F
out
1.5T + 350 ns
TPXZ,ASYNC Time from falling edge on OE to high impedance output, asynchronous mode 350 ns
Figure 2. Power-down Timing
CLOC
K
ASYN
C
CLOC
K
SYNC
P
D
T
TSTP
TPU
TSTP
Weakly pulled LOW
Weakly pulled LOW
CLOCK
A
SYNC
CLOCK
SYNC
OE
T T
PZX
T
PZX
Weakly pulled LOW
Weakly pulled LOW
T
PXZ
T
PXZ
Figure 3. Output Enable Timing
tRAMP
TS
VDD - 10%
0V
POWER
OUT
Figure 4. VDD Power-up Timing
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