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VFD Driver/Controller IC
PT6315
PT6315 v2.0
Page 15
Sep. 2002
SWITCHING CHARACTERISTIC WAVEFORM
PT6315 Switching Characteristics Waveform is given below.
where: PW
CLK
(Clock Pulse Width)>400ns
PW
STB
(Strobe Pulse Width)>1
us
t setup (Data Setup Time) >100ns
t
hold
(Data Hold Time)>100ns
t
CLK-STB
(Clock - Strobe Time)>1us
t
THZ
(Fall Time)<150us
t
TZH2
(Grid Rise Time)<0.5us (at VDD=5V)
t
PZL
(Propagation Delay Time)<100ns
t
TZH2
(Grid Rise Time)<1.0us (at VDD=3.3V)
t
PLZ
(Propagation Delay Time)<400ns
t
TZH1
(Segment Rise Time)<2.0us (at VDD=5V)
fosc = Oscillation Frequency
t
TZH1
(Segment Rise Time)<3.0us (at VDD=3.3V)
Figure 14: PT6315 Switching Characteristic Waveform
