Datasheet TC78H670FTG (Toshiba) - 7
| Manufacturer | Toshiba |
| Description | Clock-in and Serial controlled Bipolar Stepping Motor Driver |
| Pages / Page | 43 / 7 — 8. Functional Description 1 (for CLK-IN mode). CLK Function. ENABLE … |
| File Format / Size | PDF / 1.6 Mb |
| Document Language | English |
8. Functional Description 1 (for CLK-IN mode). CLK Function. ENABLE Function
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TC78H670FTG
8. Functional Description 1 (for CLK-IN mode) CLK Function
Each up-edge of the CLK signal will shift the motor’s electrical angle per step. CLK pin input Function Up-edge Shifts the electrical angle per step Down-edge (State of the electrical angle does not change)
ENABLE Function
The EN pin controls the ON and OFF of the stepping motor outputs. Motor operation starts and stops by setting H and L to the EN pin. (When EN pin is set to L (OFF), all of the MOSFETs turn off and become high impedance (hereafter, Hi-Z).) Setting the EN pin to L, and avoiding the motor to operate during VM power-on and power-off (i.e., outside of the operating voltage range) is recommended. Then, switch the EN pin to H after the VM reaches the target voltage and becomes stable. EN pin input Function L OFF (Hi-Z) H ON (Normal operation mode) VM H STBY L H EN L Internal processing time 200μs(Reference value)
CW-CCW Function and the Output pin Function (Output logic at the time of a charge start)
CW-CCW pin controls the rotation direction of the motor. When set to H, the current of OUT_A is output first, with a phase difference of 90°. When set to L, the current of OUT_B is output first with a phase difference of 90°. CW-CCW pin input OUT_x+ OUT_x- L: Counter clockwise L H operation (CCW) H: Clockwise operation (CW) H L NOTE: x = A or B 7 2019-11-28
8. Functional Description 1 (for CLK-IN mode) CLK Function
Each up-edge of the CLK signal will shift the motor’s electrical angle per step. CLK pin input Function Up-edge Shifts the electrical angle per step Down-edge (State of the electrical angle does not change)
ENABLE Function
The EN pin controls the ON and OFF of the stepping motor outputs. Motor operation starts and stops by setting H and L to the EN pin. (When EN pin is set to L (OFF), all of the MOSFETs turn off and become high impedance (hereafter, Hi-Z).) Setting the EN pin to L, and avoiding the motor to operate during VM power-on and power-off (i.e., outside of the operating voltage range) is recommended. Then, switch the EN pin to H after the VM reaches the target voltage and becomes stable. EN pin input Function L OFF (Hi-Z) H ON (Normal operation mode) VM H STBY L H EN L Internal processing time 200μs(Reference value)
CW-CCW Function and the Output pin Function (Output logic at the time of a charge start)
CW-CCW pin controls the rotation direction of the motor. When set to H, the current of OUT_A is output first, with a phase difference of 90°. When set to L, the current of OUT_B is output first with a phase difference of 90°. CW-CCW pin input OUT_x+ OUT_x- L: Counter clockwise L H operation (CCW) H: Clockwise operation (CW) H L NOTE: x = A or B 7 2019-11-28
