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LS8397 Datenblatt(PDF) 4 Page - LSI Computer Systems

Teilenummer LS8397
Bauteilbeschribung  STEPPER MOTOR CONTROLLER
PDF  8 Pages
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Hersteller  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS8397 Datenblatt(HTML) 4 Page - LSI Computer Systems

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FIGURE 3. Input Timing Diagram
8397-040709-4
tSTP
tS
tH
tR
tRSTP
STEP
FWD/REV
HALF/FULL
RESET
FIGURE 2. LS8397 BLOCK DIAGRAM
OUTPUT LOGIC
TRANSLATOR
+
-
20
18
SENSE1
17
SENSE2
VREFh
OSC
21
24
23
16
4
9
5
6
7
8
PHA INH1 PHB PHC
PHD
INH2
VDD
HALF/FULL
FWD/REV
OSC
S
Q
R
FF1
R
S
Q
FF2
1
10
3
HOME
+
-
SYNC
CONTROL
15
ENABLE
MUX
x0.707
22
STEP
Q R
S
x0.707
VREFs
19
14
11
VDD
CT_EN
13
RESET
RC
2
VSS
+V
Parameter
Symbol
Minimum
Typical
Maximum
Unit
Condition
Oscillator Frequency
fOSC
-
30
-
kHz
R = 22kΩ, C = 3.3nF
SYNC (Pin1)
Sync Output Voltage Low
VSyncL
-
-
0.8
V
IO = -5mA
Sync Output Voltage High VSyncH
3.0
-
-
V
IO = 5mA
Sync Input Pulse Width
TSPW
-
3.3
-
V
R = 22kΩ, C = 3.3nF
Sync Input Switching Point TSSP
-
2.0
-
us
Pin 16 < 1.0V
Sync Input Pulse Width
IIS
-
-425
-
uA
Pin 16 < 1.0V, VIN = VDD



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