L6452(1999) 查看數據表（PDF） - STMicroelectronics
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L6452 Datasheet PDF : 16 Pages
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L6452
DC ELECTRICAL CHARACTERISTICS (Tj = 25°C)
Symbol
Parameter
HEAD ADDRESS SELECTOR OUTPUT
Th
Up Counting, Reset Counter,
Select Channel, Clock Counter
and Enable Internal Counter
set-up time with respect to
Enable channel
Tk
Up Counting, Reset Counter,
Select Channel, Clock Counter
and Enable Internal Counter
hold time with respect to
Enable channel
Test Condition
Tj
Up Counting with respect to
Clock Counter hold time
Ti
Up counting with respect to
Clock Counter set_up time
Tm
Enable input to active output
delay time
Tn
Clock to active output delay
time
To
Disable input to inactive output
delay time
fclk-counter
ClKdc
Ton/off
Counter Clock Frequency
Clock duty cycle
Turn on/off time
From 50% Clock counter or
selector signal to 90% of the
address output variation Load:
see fig. 10
Min.
150
50
200
100
10
Typ. Max. Unit
ns
ns
ns
ns
100
ns
150
ns
100
ns
1
MHz
90
%
325
ns
COUNTER TRUTH TABLE
Enable internal counter = 1
Up Counting = 1
Reset Counter = 1
Clock Counter
C3
C2
C1
C0
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
0
0
0
0
0
0
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