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Motorola Electronic Components Datasheet

MC33793 Datasheet

Distributed System Interface (DSI) Sensor Interface

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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 (TJ)
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
VCC
TEST
XY
ERROR ACCELEROMETER
GND
LED
© Motorola, Inc. 2003
For More Information On This Product,
Go to: www.freescale.com


Motorola Electronic Components Datasheet

MC33793 Datasheet

Distributed System Interface (DSI) Sensor Interface

No Preview Available !

Freescale Semiconductor, Inc.
BUSIN
IO0
IO1
IO2
IO3
Rectifiers
H_CAP
1.0 µF
Typical
Bus Switch
0 – 35 V Bi-Directional
Forward Receiver
Data
Frame
Bandgap
Reference
Received
Message
from MCU
Response
Current
0 –11 mA
7.0 mA/µS
Bus Return
Oscillator
4.0 MHz
DataOut <3:0>
I/O Buffers
DataOut <0>
DataOut <1>
Logic
Command Decode
State Machine
Response Generation
4
Address A<3:0>
4 Bits NVM
DataOut <2>
DataOut <3>
I/O<3:0>
SEL
I/O0
I/O1 4:1
I/O2 MUX
I/O3
ADC
8 Bits
Reverse Receiver
Data
Frame
Bandgap
Reference
BUSOUT
BUSRTN
Power
Management
5.0 V Regulator
BG Reference
Bias Currents
Logic Out
High
Current
Buffer
Supply Comparators
POR
LOGOUT
REGOUT
4.7 µF
GND
Undervoltage
Detector
BG
Figure 1. 33793 Simplified Internal Block Diagram
33793
2
For More Information OMnOTTOhRiOsLAPrAoNdAuLOcGt,INTEGRATED CIRCUIT DEVICE DATA
Go to: www.freescale.com


Part Number MC33793
Description Distributed System Interface (DSI) Sensor Interface
Maker Motorola
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MC33793 Datasheet PDF






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