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Freescale Semiconductor, Inc.

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Document order number: MC33793/D

Rev 10, 07/2003

33793

Distributed System Interface (DSI)

Sensor Interface

The 33793 is a slave Distributed System Interface (DSI) device that is

optimized as a sensor interface. The device contains circuits to power sensors

such as accelerometers and to digitize the analog level from the sensor. The

device is controlled by commands over the DSI bus and returns measured

data over the bus.

DISTRIBUTED SYSTEM

INTERFACE (DSI) SENSOR

INTERFACE

Freescale Semiconductor, Inc...

Features

鈥?4-Channel, 8-Bit Analog-to-Digital Converter (ADC)

鈥?4 Pins Configurable as Analog or Logic Inputs or as Logic Outputs

鈥?Provides Regulated +5.0 V Output for Sensor Power from Bus

鈥?Additional High-Drive Logic Output

鈥?Undervoltage Fault Detection and Signaling

鈥?On-Board Clock (No External Elements Required)

鈥?Field-Programmable Address

鈥?Default and Field-Programmable as a DSI Daisy Chain Device

鈥?Recognizes Reverse Initialization for Open Bus Fault Tolerance

鈥?Detects Short to Battery on Bus Switch and Prevents Its Closure

D SUFFIX

16-LEAD SOICN

CASE 751B

ORDERING INFORMATION

Device

MC33793D/R2

Temperature

Range (T

J

)

-40擄C to 150擄C

Package

16 SOICN

33793 Simplified Application Diagram

33790

DSIO

33793

BUSRTN BUSOUT

I/O0

AGND

I/O1

AGND

I/O3

NC

I/O2

NC

BUSRTN

BUSIN

33793

BUSOUT

BUSIN

NC

H_CAP

REGOUT

NC

LOGOUT

1.0 K

1.0碌F

4.7碌F

To Other

DSI Slaves

Y

TEST

X

V

CC

XY

ERROR ACCELEROMETER

GND

LED

漏 Motorola, Inc. 2003

For More Information On This Product,

Go to: www.freescale.com

next

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