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LS7211 データシート(PDF) 4 Page - LSI Computer Systems

部品番号 LS7211
部品情報  PROGRAMMABLE DIGITAL DELAY TIMER
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メーカー  LSI [LSI Computer Systems]
ホームページ  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7211 データシート(HTML) 4 Page - LSI Computer Systems

  LS7211_03 Datasheet HTML 1Page - LSI Computer Systems LS7211_03 Datasheet HTML 2Page - LSI Computer Systems LS7211_03 Datasheet HTML 3Page - LSI Computer Systems LS7211_03 Datasheet HTML 4Page - LSI Computer Systems LS7211_03 Datasheet HTML 5Page - LSI Computer Systems LS7211_03 Datasheet HTML 6Page - LSI Computer Systems LS7211_03 Datasheet HTML 7Page - LSI Computer Systems LS7211_03 Datasheet HTML 8Page - LSI Computer Systems  
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A
1
2
B
TRIG 18
CLOCK/RC/XTLI 4
XTLO(LS7212)
5
5
RCS/CLKS(LS7211)
6
PSCLS
1M
1M
OSC
MUX
3-STATE
DECODER
CLOCK
LATCH
EDGE
DETECT
MODE
REG
CONTROL
LOGIC
LATCH/TIMER
PRESCALER
500K
8
BUF
9
10-17
OUT
WB7-WB0
FIGURE 2. LS7211/LS7212 BLOCK DIAGRAM
500K
500K
500K
500K (8)
3
8
+V
-V (Gnd)
+V
+V
+
V
VDD
VSS
7
RESET
500K
ELECTRICAL CHARACTERISTICS (Voltages referenced to Vss) (Con’t)
Characteristic
SYMBOL
VDD
Unit
Condition
Min
Max
Min
Max
Min
Max
Switching Characteristics (See Fig. 3)
4.0
-
1.3
-
1.0
-
0.76
MHz
RC Oscillator Frequency
fosc
10.0
-
4.0
-
3.0
-
2.3
MHz
-
18.0
-
6.0
-
4.5
-
3.4
MHz
4.0
-
2.3
-
1.8
-
1.3
MHz
For prescale
External Clock or
fext
10.0
-
7.0
-
5.5
-
4.0
MHz
factor S = 1 or 3000
Crystal Oscillator
18.0
-
11.0
-
8.5
-
6.5
MHz
or 3600
Frequency
4.0
-
1.2
-
0.93
-
0.7
MHz
S = 32768
fext
10.0
-
4.0
-
3.0
-
2.3
MHz
or
18.0
-
7.0
-
5.5
-
4.2
MHz
32768 x 60
TRIG Set-Up Time
t1
-
23
-
30
-
40
-
ns
-
A, B Set-Up Time
t2
-
0
-
0
-
0
-
ns
-
WB0 - WB7 Set-Up Time
t3
-
0
-
0
-
0
-
ns
-
4.0
215
-
280
-
370
-
ns
Clock to Out Delay
t4
10.0
80
-
105
-
140
-
ns
CL = 50pF
18.0
50
-
65
-
85
-
ns
7211-012703-4


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