MC33793 Datasheet, PDF (1/24 Pages) Motorola, Inc – Distributed System Interface (DSI) Sensor Interface

Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33793/D
Rev 10, 07/2003
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.
Features
• 4-Channel, 8-Bit Analog-to-Digital Converter (ADC)
• 4 Pins Configurable as Analog or Logic Inputs or as Logic Outputs
• Provides Regulated +5.0 V Output for Sensor Power from Bus
• Additional High-Drive Logic Output
• Undervoltage Fault Detection and Signaling
• On-Board Clock (No External Elements Required)
• Field-Programmable Address
• Default and Field-Programmable as a DSI Daisy Chain Device
• Recognizes Reverse Initialization for Open Bus Fault Tolerance
• Detects Short to Battery on Bus Switch and Prevents Its Closure
33793
DISTRIBUTED SYSTEM
INTERFACE (DSI) SENSOR
INTERFACE
D SUFFIX
16-LEAD SOICN
CASE 751B
ORDERING INFORMATION
Device
Temperature
Range (T_J)
Package
MC33793D/R2 ^{-40°C to 150°C}
16 SOICN
33790
DSIO
33793 Simplified Application Diagram
33793
BUSRTN BUSOUT
I/O0
AGND
NC
BUSIN
I/O1
NC
AGND
H_CAP
I/O3
REGOUT
NC
NC
I/O2
LOGOUT
BUSRTN
33793
BUSIN
BUSOUT
To Other
DSI Slaves
1.0µF
4.7µF
1.0 K
YX
V_CC
TEST
XY
ERROR _{ACCELEROMETER}
GND
LED
© Motorola, Inc. 2003
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