STSPIN220 datasheet(7/27 Pages) STMICROELECTRONICS

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Pin description

Figure 3. Pin connection (top view)

DIR\MODE4

STCK\MODE3

OUTA1

SENSEA

TOFF

REF

OUTB1

SENSEB

OUTA2

OUTB2

GND

EPAD

MODE1

MODE2

EN\FAULT

STBY\

RESET

Note: The exposed pad must be connected to ground.

Table 6. Pin description

Name

Type

Function

DIR\MODE4

Logic input

Direction input, Step mode selection input 4.

STCK\MODE3

Logic input

Step clock input, Step mode selection input 3.

OUTA1

Power output

Power bridge output side A1.

SENSEA

Power output

Sense output of the bridge A.

OUTA2

Power output

Power bridge output side A2.

Supply

Device supply voltage.

7, EPAD

GND

Ground

Device ground.

OUTB2

Power output

Power bridge output side B2.

SENSEB

Power output

Sense output of the bridge B.

OUTB1

Power output

Power bridge output side B1.

REF

Analog input

Reference voltage for the PWM current control circuitry.

TOFF

Analog input

Internal oscillator frequency adjustment.

EN\FAULT

Logic input\Open drain

output

This is the power stage enable (when low, the power stage is turned off)

and is forced low through the integrated open-drain MOSFET when a

failure occurs.

STBY\RESET

Logic input

When forced low, the device is forced into low consumption mode.

MODE2

Logic input

Step mode selection input 2.

MODE1

Logic input

Step mode selection input 1.

STSPIN220

Pin description

DS11633 - Rev 4

page 7/27

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