LS7215 Просмотр технического описания (PDF) - LSI Corporation
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LS7215 Datasheet PDF : 8 Pages
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+V
10k
ƒ
0.1µF
+V
3
V DD
5
RCS/CLKS
4
RC
LS7215
V SS
8
ƒ
=
10
x
10
3
x
1
0.1
x
10 -6
= 1kHz
FIGURE 5. RC- Oscillator Connection
25pF
470k
CRYSTAL
25pF
5
XTLO
LS7216
10M
4
XTLI
LS7215
4
CLOCK
4
CLOCK
LS7216
FIGURE 6. MULTI-TIMER WITH SINGLE CRYSTAL TIME-BASE
+V
3
V DD
1M
120VAC
LS7215
4
CLOCK
200pF
V SS
8
FIGURE 7. DRIVING CLOCK INPUT FROM THE AC LINE
+V
WB LOAD
*8
*2
TRIGGER
ƒ
20
11-18
1, 2
3
LOAD V DD
WB0-WB7
A, B
LS7215
19
TRIG
4
CLOCK
9
OUT
V SS
8
WB LOAD
*8
*2
20
11-18
1, 2
3
LOAD VDD
WB0-WB7
A, B
LS7215
19
TRIG
4
CLOCK
9
OUT
OUT
V SS
8
* Connect for desired delay and mode
7215-062309-6
FIGURE 8. DELAY EXTENSION BY CASCADING
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