LTPH245 데이터 시트보기 (PDF) - Seiko Instruments Inc
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LTPH245 Datasheet PDF : 64 Pages
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(2) Excitation Sequence
As shown in Table 3-4, the printer feeds paper in the normal direction when the motor is excited
in the order of step 1, step 2, step 3, step 4, step 1, step 2, . . . . On the other hand, to rotate the
motor in a reverse direction, drive the motor in the reverse order of: step 4, step 3, step 2, step
1, step 4, step 3, . . . .
Table 3-4 Excitation Sequence
Signal Name
A
B
A
B
Step 1
Low
High
High
Low
Sequence
Step 2 Step 3
High
High
High
Low
Low
Low
Low
High
Step 4
Low
Low
High
High
H
A
L
H
B
L
H
A
L
H
B
L
1 DOT LINE
Figure 3-4 Input Voltage Signals for the Sample Drive Circuit
3-7
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