Analog Integrated Circuit Device Data

Freescale Semiconductor

3

33899

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33899 Pin Connections

Table 1. 33899 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 12.

Pin Number

Pin Name

Formal Name

Definition

1

VDDQ

Logic Level Output Bias

2

DO

SPI Data Out

SPI control data output pin from the IC to the MCU.

3

DI

SPI Data In

SPI control data input pin from the MCU to the IC.

4

SCLK

SPI Serial Clock Input

The SCLK input is the clock signal input for synchronization of serial data transfer.

5

CS

Chip Select

(Active Low)

This pin is an input connected to a chip select output of an MCU.

6

CRES

Charge Pump

This pin connects an external capacitor, which is the storage reservoir for the

internal charge pump.

7

REDIS

Automatic Output Re-

Enable Disable

This input pin is a connection to a capacitor that determines the default time the

output will be turned off when the low-side current comparator is tripped, if PWM

has not commanded it. The typical value with a 0.1

μF is 100μs. If shorted, the

feature is disabled.

8, 9, 22, 23

VIGNP

Protected Ignition

Voltage

This input pin is the primary H-Bridge power input.

Note: Not reverse voltage protected.

10, 11

S0

Bridge Output 0

to Load

These output pins drive the bi-directional motor and must be connected together

on the PC board.

12, 19

GND

Ground

These pins must be connected on the PC board to the exposed pad.

13, 17, 18

NC

No Connect

These pins have no internal connections.

14

LSCMP

Low Side Comparator

This output pin pulses high anytime the low side current comparator is tripped.

15

16

EN2

EN1

Master Enable 2

Master Enable 1

These input pins determine the mode of the IC; namely, sleep, standby, and run.

20, 21

S1

Bridge Output 1

to Load

These output pins drive the bi-directional motor and must be connected together

on the PC board.

VDDQ

1

CS

CRES

REDIS

VIGNP

VIGNP

S0

S0

GND

NC

LSCMP

EN2

DI

SCLK

DO

CSNS

FWD

PWM

RS

VIGNP

VIGNP

S1

S1

GND

NC

NC

EN1

VCCL

REV

VCC

7

8

9

10

11

12

13

14

15

3

4

5

6

2

30

24

23

22

21

20

19

18

17

16

28

27

26

25

29

Tab

Tab