LS7215 데이터 시트보기 (PDF) - LSI Corporation
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LS7215 Datasheet PDF : 8 Pages
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TRIGGER IN
25pF
25pF
ƒ
470k
+V
S1
+V
OUTPUT
1
A
2
B
19 TRIG
4 XTLI
10M
5
XTLO
6
PSCLS
7
RESET
8
Vss
LS7216
V DD 3
18
WB0
17
WB1
16
WB2
15
WB3
14
WB4
WB5 13
12
WB6
11
WB7
+V
1s/1m
2s/2m
4s/4m
8s/8m
16s/16m
32s/32m
64s/64m
128s/128m
s = seconds
m = minutes
9
OUT
NOTE : Crystal Frequency, ƒ = 32,768Hz
Switch: S1 low: Delay increment = 1s; Maximum Delay = 255s
S1 high: Delay increment = 1m; Maximum Delay = 255m
FIGURE 9. PROGRAMMABLE ACCURATE REAL-TIME DELAY GENERATION
+3V
+3V
3
11-18 WB0-WB7
VDD
VDD
IO
8
IO
IO
LS7215/16
+3V
20
LOAD
ODOUT 10
V SS
8
+3V
MCU
11-18
3
V DD
WB0-WB7
VSS
LS7215/16
+3V
20 LOAD
ODOUT 10
V SS
8
FIGURE 10. LATCHING WEIGHTING BITS FROM A MCU
(Example showing separate relay and logic supplies)
7215-072009-7
+9V
+18V
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