Datasheet
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SBAS253E − MAY 2003 − REVISED JULY 2006
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55
3.8.2.2 Unfiltered Timing Characteristics
(1)
Over recommended operating free-air temperature range at –40_C to +85_C, AV
DD
= 5V, BV
DD
= 3V − 5V.
PARAMETER
SYMBOL MIN MAX UNIT
CLK Period t
C1
62.5 ns
Counter input signal, CNTA1 or CNTB1, Period t
C2
8 t
C1
Counter input signal, CNTA1 or CNTB1, HIGH or LOW time t
W2
4 t
C1
Delay between CNTA1 or CNTB1 signal, any combination t
D1
2 t
C1
(1) All input signals are specified with t
R
= t
F
= 5ns (10% to 90% of BV
DD
) and timed from a voltage level of (V
IL
+ V
IH
)/2.
A1p
A1n
B1p
B1n
A1
B1
CNTA1
t
W2
t
D1
t
C1
t
C2
CNTB1
CLK
FiltA1
FiltB1
EDGE
U/D
Figure 1−26. Timing Diagram of the Counter Signals with the Digital Noise Filter Disabled