33793 Datasheet, PDF (1/27 Pages) Freescale Semiconductor, Inc – Distributed System Interface (DSI) Sensor Interface

Freescale Semiconductor
Technical Data
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
• Conforms to DSI Specification Version 1
• 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
• Pb-Free Packaging Designated by Suffix Code EF
Document Number: MC33793
Rev 13.0, 11/2006
33793/A
DISTRIBUTED SYSTEM INTERFACE
SCALE 2:1
D SUFFIX
EF SUFFIX (Pb-FREE)
98ASB42566B
16-PIN SOICN
ORDERING INFORMATION
Device
MC33793D/R2
Temperature
Range (T_J)
Package
MCZ33793EF/R2 -40°C to 150°C
16 SOICN
MCZ33793AEF/R2
33790
GND
DSIO
X-Y
Accelerometer
Error
Test
X
Y
VCC
GND
33793
BUSIN
BUSRTN
I/O0
I/O1
I/O2
I/O3
BUSOUT
H_Cap
REGOUT
LOGOUT
AGND
Multiple
DSI Slaves
33793
BusIN
Figure 1. 33793 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as
may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2006. All rights reserved.