Fact Sheet
MPXY8300 Tire Pressure Monitoring System
Freescale’s MPXY8300 tire pressure
monitoring system (TPMS) chipset is designed
to enable a timely warning to the driver in the
case of under-inflated or over-inflated tires on
cars, trucks or buses—even while in motion.
It is the first of its kind to offer capacitive
sensor technology with full integration of a
pressure sensor, an 8-bit S08 microcontroller
(MCU), a radio frequency (RF) transmitter and
a 2-axis accelerometer with X and Z axis in
one package.
Key Features
?  Pressure and temperature sensors
?  Accelerometers for motion detection 
?  Integrated 315/434 MHz PLL-based 
RF transmitter
?  Multiple baud rate and modulation scheme
?  8-bit MCU with 512B RAM and 16 KB flash
?  Single-channel LF input with detector/decoder
?  Over-temperature shutdown
?  Supply voltage measurement
?  Low-power wake-up timer and periodic reset 
driver by low frequency oscillations (LFO)
?  Selective encapsulation for media protection
Design Considerations
?  Power management specific to TPMS for 
long battery life
?  Robust sensing accuracy in harsh 
environments during vehicle operation
?  Fully integrated device in single package 
reduces system cost and development
cycle time
?  Precise tire pressure measurement 
?  Complies with the U.S. Federal Motor 
Vehicle Safety Standard (FMVSS) 138
TPMS All-in-One Package Block Diagram
?  MCU, RF transmitter, LF receiver, pressure 
sensor and accelerometer integrated
in a single small outline wide body,
20-pin package (SOIC 20 WB) minimizing 
components and space needed
?  RF transmission/protocol can be used 
globally with regional variation
?  Customizable and programmable
相关PDF资料
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KMY21M SENSOR MAGNETIC 2.5 KA/M SOT-223
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KXOB22-12X1 SOLAR CELL
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