Specification

[AP1034]
016003455-E-01 - 11 - 2016/06

DIR : Motor Rotation Direction Setting Terminal
This pin sets the direction of motor rotation. When changing the direction, a new setting is reflected on a rising
edge of the CLK pin. Refer to Figure 6.
・CCW : H-bridge2 current is output by shifting 90deree ahead against the H-bridge1 current.
・CW : H-bridge2 current is output by shifting 90degree behind against the H-bridge1 current.
Table 6. Settings of rotate direction of motor
DIR
Condition
L
CCW (Reverse)
H
CW (Forward)

RESETB : Home Position Setting Terminal
When the RESETB input is “H”, the sequencer is set at home position, and all the H-bridge outputs become off
(motor output becomes Hi-Z). In this case, STEP input is ignored until “H” is input to the RESETB terminal.
The internal circuits are in enable state. Refer to Figure 7.
Table 7. Settings of home position terminal
RESETB
Condition
L
Output : Hi-Z (Home Position)
H
Operating mode
STEP
IOUT1
DIR
IOUT2
0%
0%
CCW
CW
CW
STEP
IOUT1
RESETB
IOUT2
0%
0%
Figure 6. DIR signal Timing Chart
(W1-2 phase)
Figure 7. RESETB signal Timing Chart
(W1-2 phase)