MODE3

(STCK)

MODE4

(DIR)

MODE1

MODE2

Step mode

1

1

1

0

1

1

1

1

1. This driving mode is automatically bypassed by the MODE1 = MODE2 = 0 if it is kept after the device quit the standby

condition.

DIR

t

DIR,su

t

DIR,ho

t

STCKH

t

STCKL

1/f

STCK

STCK

V

S

V

Sth(ON)

STBY\

RESET

MODE1

MODE2

Stepping

mode

Undeterminated

Undeterminated

Full-step

t

MODEsu

t

MODEh

t

MODEsu

t

MODEh

MODE3

(STCK)

MODE4

(DIR)

When the full-step mode is set, the reference value of the PWM current controller and the direction of the current

for both H bridges as listed in Table 8. Step mode selection through MODEx inputs.

STSPIN220

Microstepping sequencer

DS11633 - Rev 4

page 10/27