Data Sheet

TB67S279FTG, TB67S289FTG, TB67S249FTG Application Note
2018-03-07
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Preliminary
8.4. RESET function
This function initializes the internal electrical angle. The standby mode can be configured by
setting DMODE0, DMODE1, and DMODE2 pins low level.
Note: Built-in digital filter of 0.625 μs (±20 %) is adopted to RESET pin.
RESET Function
High Initializes the internal electrical angle
Low Normal operation
When the electrical angle is initialized by setting RESET pin to high level, the relation of the
current setting for each H-bridge (Ach and Bch) and the electrical angle is shown below. In the
case the MO pin level is pulled up, it shows low level (internal open-drain MOSFET turns on)
when the electrical angle is initialized.
Step resolution Ach current Bch current Electrical angle
1/32 step setting 71% 71% 45°
1/16 step setting 71% 71% 45°
1/8 step setting 71% 71% 45°
Half (b) step setting 71% 71% 45°
Quarter step setting 71% 71% 45°
Half (a) step setting 100% 100% 45°
Full step setting 100% 100% 45°