Analog Integrated Circuit Device Data

4

Freescale Semiconductor

33991

PIN CONNECTIONS

15

RST

Reset. If the master decides to reset the device, or place it into a sleep state, the RST pin is driven to a

logic 0. A logic 0 on the RST pin will force all internal logic to the known default state. This input has an

internal active pull-up.

16

V

PWR

Battery Voltage. Power supply.

17 - 20

GND

Ground. These pins serve as the ground for the source of the low-side output transistors as well as the

logic portion of the device. They also help dissipate heat from the device.

21

SIN1-

H-Bridge Output. This is the output pin of a half bridge, designed to source or sink current. The H-Bridge

pins linearly drive the sine and cosine coils of two separate stepper motors to provide four-quadrant

operation.

22

SIN1+

H-Bridge Output. This is the output pin of a half bridge, designed to source or sink current. The H-Bridge

pins linearly drive the sine and cosine coils of two separate stepper motors to provide four-quadrant

operation.

23

COS1-

H-Bridge Output. This is the output pin of a half bridge, designed to source or sink current. The H-Bridge

pins linearly drive the sine and cosine coils of two separate stepper motors to provide four-quadrant

operation.

24

COS1+

H-Bridge Output. This is the output pin of a half bridge, designed to source or sink current. The H-Bridge

pins linearly drive the sine and cosine coils of two separate stepper motors to provide four-quadrant

operation.

Table 1. 33991 Pin Definitions (continued)

Pin Number

Pin Name

Definitions