Sensing Solutions—Robust, Reliable Performance FXTH870x TPMS Family Tire Pressure Monitoring Sensors 100-900 kPa Overview Freescale’s FXTH870s family of tire pressure monitoring sensors (TPMS) is the smallest, fully integrated 7 x 7 mm package footprint on the market which is 40% smaller than Freescale’s previous-generation QFN 9 x 9 mm package. It also provides the lowest transmitting power consumption (less than 8 mA Idd), largest customer memory size (8 kB) and unique dual-axis accelerometer architecture. Freescale’s TPMS solution integrates an 8-bit microcontroller (MCU), pressure sensor, XZ-axis or Z-axis accelerometer and RF transmitter. Freescale’s portfolio with pressure ranges of 100-450 kPa and 100–900 kPa support cars and light trucks TPMS markets. These TPMS markets are mainly regulation driven with new mandates, resulting in significant growth. Freescale continues to produce TPMS products that meet the latest mandates with ease to accommodate customer requirements. Target Applications • Tire pressure monitoring systems • Ultra low-power wireless sensing Implementations • Measures pressure for passenger/light duty vehicles • Measures dual-axis acceleration • Measures temperature FXTH870x Family Xtrinsic FXTH87TPMS TPMS Family BlockBlock DiagramDiagram • Measures battery voltage • Bi-directional communication Core System Memories S08 8-bit 4 MHz 64-byte Battery-backed RAM 16 kB Flash Periodic Wake-Up Unit 512-byte RAM Debug Interfaces Interrupt Controller Sub-1 GHz Radio Transmitter 315 or 434 MHz ISM band RF Tx 26 MHz Oscillator VCO / PLL Packet Encoder 32-byte Buffer Temperature Restart Analog Timers Interfaces Clocks 6 ch 10-bit ADC 2 ch Timer Keyboard Interface Low-, Medium- and High- Frequency Oscillators Sensor Measurement Interface Periodic Interrupt Timer Pressure Sensor Accelerometer Temperature Sensor Low-Power Timer 6 ch GPIOs 125 kHz Differential LF ASK Rx Internal Reference Clocks Product Specifications Standard Part Number P-cell Pressure Offset Axis of Range (kPa) Accuracy (0° C to 70° C) Acceleration Z-Offset Accuracy (-40° C to +125° C) X Range Z Range X-Offset Accuracy (-40° C to +125° C) Standard Tolerances FXTH870502DT1 100–450 ±7 kPa Z -270 g/+ 400 g range ±6 g FXTH870511DT1 100–450 ±7 kPa XZ -210 g/+240 g range ±5 g FXTH870902DT1 100–900 ± 10 kPa Z -270 g/+ 400 g range ±6 g FXTH870911DT1 100–900 ± 10 kPa XZ -210 g/+240 g range FXTH870912DT1 100–900 ± 10 kPa XZ -270 g/+ 400 g range -80 g/+90 g range ±4 g ±5 g -80 g/+90 g range ±4 g ±6 g -80 g/+90 g range ±4 g -80 g/+90 g range ±3 g Precision Tolerances FXTH8705026T1 100–450 ± 7 kPa Z -270 g/+ 400 g range ±3 g FXTH8705116T1 100–450 ±7 kPa XZ -210 g/+240 g range ±3 g FXTH8709026T1 100–900 ± 10 kPa Z -270 g/+ 400 g range ±3 g FXTH8709116T1 100–900 ± 10 kPa XZ -210 g/+240 g range ±3 g -80 g/+90 g range ±3 g FXTH8709126T1 100–900 ± 10 kPa XZ -270 g/+ 400 g range ±3 g -80 g/+90 g range ±3 g * For precision product availability, please contact your Freescale Sales Representative. Features • QFN 7 x 7 x 2.2 mm package enables visible solder joint for inspection • 100–450 kPa and 100–900 kPa pressure ranges • Z-axis or dual XZ-axis accelerometers • Accelerometer standard or precision tolerances available • Low-power wake-up timer and periodic reset driven by LFO • Dedicated state machines for reduced power consumption • 8-bit MCU/S08 core with SIM, interrupt and debug/monitor • 512 Bytes RAM / 16 k Flash (8 k for Freescale library, 8 k for applications) • Internal 315/434 MHz RF transmitter • Internal 125 kHz LF receiver • Six multipurpose GPIO pins (including two A/D inputs) Product Longevity Program These products are/or may be supported by Freescale’s Product Longevity Program. For Terms and Conditions and to obtain a list of available products please see: Freescale.com/productlongevity Common Attributes Voltage Measurement Range 1.8 V to 3.6 V Voltage Resolution (8-bit) 10 mV / LSB Voltage Accuracy (>2.1 V supply) ±100 mV Temperature Measurement Range Run Mode -40 oC to +125 oC 1 oC / LSB Temperature Resolution (8-bit unsigned) o o ±3 oC Temperature Offset Accuracy (-20 C ≤ TA ≤ 70 C) Product Differentiation Features Benefits Smallest, fully integrated package size Enables smallest module design for lighter weight and space-constrained applications Dual-axis XZ inertial sensor Enables easier tire localization capability Same package height and similar firmware as QFN 9 x 9 solutions Easy transition from QFN 9 x 9 solutions 8 kB customer memory/capability of interfacing with external memory Flexibility of software development and time to market Lowest RF power consumption Longest battery life High production capacity (QFN 7 x 7) Secured supply and short lead time Documentation Document Number Title Description FXTH870xD Tire Pressure Monitor System Standard Tolerance Specification Data Sheet FXTH870x6 Tire Pressure Monitor System Precision Tolerance Specification Data Sheet AN4391 Using the FXTH87 Family of LF Receivers for TPMS Application Application Note AN1902 Assembly Guidelines for QFN and DFN Packages Application Note Freescale: A Leader in Sensing Solutions Expanding on more than 35 years of sensor innovation, Freescale sensing solutions are designed with the right combination of high-performance sensing capability, processing capacity and customizable software to help deliver smart, differentiated sensing applications. With these sensing solutions, our vision is to offer a diverse and differentiated product portfolio to meet the expanding needs of the automotive, consumer and industrial segments. Freescale sensing solutions offer ideal blends of functionality and intelligence designed to help our customers differentiate and win in highly competitive market. For more information, visit freescale.com/TPMS Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. All other product or service names are the property of their respective owners.© 2015 Freescale Semiconductor, Inc. Document Number: FXTH87A4FS REV 3