LV8044LP
Chopping Frequency Setting (D6 and D7 in the serial data)
This IC integrates an internal oscillator circuit and allows the chopping frequency used in constant-current control to be
switched with the serial data (111***, D6, D7) setting.
Data D6
0
1
0
1
Data D7
0
0
1
1
Chopping frequency
130KHz
65KHz
200KHz
100KHz
Monitor Output Setting (Serial data bits D3, D4, and D5)
The signal output from the PI3/MO pin can be switched with the serial data (111, D3, ****) setting.
Data D3
0
1
PI3/MO pin output
Photosensor drive output 3
Stepping position detection monitor output
It is also possible to select which of channels 1 and 2 or channels 3 and 4 are output from the monitor pin with the serial
data (111*, D4, D5, **) setting. The MO output position used to detect the driver excitation position in microstepping
drive mode can also be switched. The state MO = Low is output at the output position.
Data D4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
Data D5
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Channels 1 and 2
excitation mode
2 phase excitation
1-2 phase excitation
(full torque)
1-2 phase excitation
4W1-2 phase excitation
Channels 3 and 4 excitation
mode
2 phase excitation
1-2 phase excitation (full torque)
1-2 phase excitation
4W1-2 phase excitation
PWM drive mode
MO output
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/1-2 phase position
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/1-2 phase position
Output held fixed at the high level
No.A0438-18/26