LS7215-S View Datasheet(PDF) - LSI Corporation
Part Name
Description
Manufacturer
LS7215-S Datasheet PDF : 8 Pages
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ELECTRICAL CHARACTERISTICS (Voltages referenced to Vss) (Con’t)
Characteristic
SYMBOL VDD
Min Max Min Max
Switching Characteristics (See Fig. 3)
3.0
-
1.8
-
1.4
RC Oscillator Frequency
fosc 10.0
-
4.5
-
3.4
18.0
-
8.0
-
4.0
3.0
-
2.6
-
2.0
External Clock or
fext 10.0
-
5.3
-
4.0
Crystal Oscillator
18.0 -
5.9
-
4.6
Frequency
3.0
-
7.2
-
5.5
fext 10.0
-
16.0
-
12.8
18.0
-
15.9
-
12
TRIG Set-Up Time
A, B Set-Up Time
Clock to Out Delay
t1
-
38
-
50
-
t2
-
0
-
0
-
3.0
-
284
-
375
t4
10.0
-
98
-
130
18.0
-
87
-
115
Min Max
-
1.05
-
2.6
-
3.0
-
1.52
-
3.0
-
3.5
-
4.2
-
9.7
-
9.1
66
-
0
-
-
495
-
172
-
152
Unit Condition
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-
For prescale
factor S = 1 or 3000
or 3600
S = 32768
or
32768 x 60
ns -
ns -
ns
ns CL = 50pF
ns
A1
B2
+V
500k
+V
500k
TRIG 19
RESET 7
CLOCK/RC/XTLI 4
500k
MODE
REG
LATCH
EDGE
DETECT
500k
CLOCK
OSC
MUX
XTLO (LS7216) 5
RCS/CLKS (LS7215) 5
500k
PSCLS 6
+V
1M
1M
3-STATE
DECODER
7215-062309-4
10 ODOUT
CONTROL
LOGIC
BUF
9 OUT
8 11-18 WB7-WB0
8 500k (8)
8
LATCH/TIMER
8
LATCH
PRESCALER
20 LOAD
+V
3 VDD
-V
8 VSS
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