The highly integrated single-package chipset combines an advanced pressure sensor with an 8-bit microcontroller a 2-axis accelerometer and a radio transmitter.
TOKYO -- has introduced the "industry's first tire pressure monitoring system (TPMS) containing a capacitive pressure sensor for ultra-low power consumption and precise sensing." Freescale's MPXY8300 system-in-package device provides a highly integrated cost-effective solution that combines an advanced compel sensor with an 8-bit microcontroller (MCU). 2-axis accelerometer and radio frequency (RF).
Freescale's MPXY8300 single-package solution is designed to address global go vehicle safety requirements for accurate timely degenerate compel monitoring. Properly inflated tires can help reduce the potential for life-threatening blowouts enhance road handling alter furnish efficiency lengthen degenerate life and lower the be of vehicle ownership.
The National Highway merchandise Safety Administration (NHTSA) estimates that 23,000 accidents and more than 500 fatalities a year in the U. S bear on flat tires and blowouts stemming from improperly inflated tires (over or under inflation). To back up hold back tire-related accidents in the U. S.. NHTSA regulations require new vehicles weighing up to 10,000 pounds to consider TPMS technology by model year 2008. TPMS also is becoming a driver safety requirement in Europe and the Asia-Pacific region.
"While TPMS designs have been around for a few years direct system be and customer cost-of-ownership remain key concerns for vehicle makers," said Chris Webber. Vice President of Strategy Analytics' Automotive Practice. "To bring home the bacon improvements in both of these areas automotive OEMs are looking for highly integrated TPMS solutions such as Freescale's that furnish excellent low-power management for longer battery life and high levels of integration for reduced system cost."
Freescale's MPXY8300 TPMS solution is designed to back up drivers keep proper degenerate pressure by instantly notifying them when any individual tire (including the forbear) is not at the optimal pressure aim. Engineered for wheel-mounted applications the highly integrated MPXY8300 system helps automotive engineers decrease development make pass time component count and system be by combining the necessary digital analog and sensor functions of a TPMS in a single be case. In addition to being a leading supplier of 8-bit automotive MCUs. Freescale offers a wide range of high-performance analog power-management pressure and inertial sensor and RF devices for automotive applications.
About the MPXY8300 TPMS SolutionFreescale's intelligent MPXY8300 system offers precise real-time degenerate compel measurement using enjoin monitoring at each go around. Additionally. Freescale's single-package solution has an integrated accelerometer for communicate detection. The system can be programmed to transmit measurements at certain degenerate rotation speeds and change surface when the tires are not rotating at all.
The MPXY8300 system-in-package device features these key components:
Pressure and temperature sensors for compensating tire compel
8-bit MCU with 512 byte RAM. 16 KB radiate
X,Z-axis accelerometer
Low-frequency enter for receiving diagnostic commands
The MPXY8300 incorporates a number of low-power techniques engineered to help increase TPMS battery life beyond 10-year requirements. For example the capacitive sensor technology used in the MPXY8300 is designed to enable ultra-low power consumption for extended battery life.
"Freescale's continued innovation in TPMS technology is enabling higher integration and greater functionality for enhanced driver safety and superior vehicle performance," said Paul Grimme. Senior Vice President and General Manager of Freescale's Transportation & Standard Products assort. "The MPXY8300 TPMS sets an industry benchmark for integration robust performance battery longevity and overall system value. And our capacitive sensors have the potential to become the leading pressure sensor technology for intelligent TPMS solutions."
MPXY8300 System Features
Highly integrated system-in-package device
Pressure sensor with two compel range options:
Passenger cars: 100–800 kPa
Heavy duty trucks: 100–1500 kPa
Capacitive sensor technology for low cater consumption
Accelerometer for communicate detection
cater management specific to TPMS for more than 10-year battery life
8-bit MCU with 512 byte RAM. 16 KB radiate and multiple low-power timing functions
RF transmitter with integrated rush handle at 315/434 MHz
Multiple baud rate and modulation plot
Two-channel LF enter with detector/decoder
Over-temperature shutdown
Supply-voltage measurement
Low-power wake-up timer and periodic define driver by low-frequency oscillations
Integrated filter create by mental act for media protection in harsh vehicle environments
20-pin SOIC wide be case
–40°C to 125°C operating temperature be
Pricing and AvailabilityMPXY8300 samples are available now to select customers and command merchandise availability is expected in the second accommodate of 2008.
Suggested per-unit resale pricing (USD) in 10,000-piece quantities:
MPXY8300A for passenger cars with X,Z-axis accelerometer at $6.60
MPXY8300B for passenger cars with Z-axis accelerometer at $5.48
MPXY8300C for passenger cars without an accelerometer at $5.22
MPXY8320A for heavy duty trucks with X,Z-axis accelerometer at $9.64
MPXY8320B for heavy duty trucks with Z-axis accelerometer at $8.00
MPXY8320C for heavy duty trucks without an accelerometer at $7.63
Freescale plans to offer several development tools in the back up accommodate of 2008. These tools will contain firmware drivers to go application development. Key high-level software commands consider reading compel acceleration temperature and battery voltage and interface with the RF transmitter.
For more information about degenerate compel monitoring systems tour the affiliate's.
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Source: SensorsDate: 9/14/2007
The highly integrated single-package chipset combines an advanced pressure sensor with an 8-bit microcontroller a 2-axis accelerometer and a radio transmitter.
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