FXTH8715117T1 [NXP]

Tire Pressure Monitoring Sensors 100-1500 kPa;


型号：	FXTH8715117T1
厂家：	NXP
描述：	Tire Pressure Monitoring Sensors 100-1500 kPa 监控
文件：	总2页 (文件大小：206K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Sensing Solutions—Robust, Reliable Performance

FXTH8715 High Pressure

TPMS Family

Tire Pressure Monitoring Sensors 100-1500 kPa

Target Applications

• Tire pressure monitoring

systems

Overview

Freescale’s FXTH8715 high pressure family of tire pressure monitoring sensors (TPMS) is highly

integrated with the smallest 7 x 7 mm package footprint on the market which has a 63%

smaller footprint than Freescale’s previous-generation of SOIC 20 package developed for truck

applications. It also provides the lowest transmitting power consumption (less than 8 mA Idd),

largest customer memory size (8 kB) currently available 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.

• Ultra low-power wireless

sensing

Implementations

• Measures pressure typical for

heavy duty vehicles (trucks,

buses, construction vehicles)

• Measures dual-axis acceleration

• Measures temperature

Freescale’s portfolio with pressure ranges of 100-1500 kPa support s medium and heavy duty

trucks, buses and construction vehicles for TPMS markets. These TPMS markets are mainly

driven by improved safety and fleet management requirements.

• Measures battery voltage

• Bi-directional communication

FXTH8715 TPMS Family Block Diagram

Core

System

Memories

Sub-1 GHz Radio Transmitter

315 or 434 MHz ISM band RF Tx

64-byte

Battery-backed

RAM

16 kB Flash

S08 8-bit 4 MHz

Periodic

Wake-Up Unit

512-byte RAM

Debug

Interfaces

Interrupt

Controller

26 MHz

VCO / PLL

Oscillator

Temperature

Restart

Packet Encoder

32-byte Buffer

Analog

Timers

Interfaces

Clocks

Low-, Medium- and

High- Frequency

Oscillators

Keyboard Interface

6 ch GPIOs

2 ch Timer

6 ch 10-bit ADC

Periodic

Interrupt

Timer

Sensor Measurement

Interface

Internal

Reference Clocks

125 kHz Differential

LF ASK Rx

Pressure Sensor

Accelerometer

Low-Power

Timer

Temperature Sensor

Product Specifications

Standard

Part Number

P-cell

Pressure Offset

Axis of

Z Range

Z-Offset Accuracy

(-40° C to +125° C

X-Offset Accuracy

(-40° C to +125° C)

Range (kPa) Accuracy (0° C to 70° C) Acceleration Sensitivity

X Range

Standard Tolerances

-270 g/+350 g range,

40 g sensitivity

FXTH871502DT1 100-1500

20 kPa

6 g

5 g

-210 g/+240 g range,

60 g sensitivity

-70 g/+80 g range,

10 g sensitivity

FXTH871511DT1

100-1500

4 g

3 g

Precision Tolerances

-270 g/+350 g range,

40 g sensitivity

FXTH8715026T1

FXTH8715116T1

100-1500

20 kPa

3 g

-210 g/+240 g range,

60 g sensitivity

-70 g/+80 g range,

10 g sensitivity

High Precision Tolerances

-270 g/+350 g range,

40 g sensitivity

FXTH8715027T1

FXTH8715117T1

100-1500

17 kPa

3 g

-210 g/+240 g range,

60 g sensitivity

-70 g/+80 g range,

10 g sensitivity

Features

• QFN 7 x 7 x 2.2 mm package enables

visible solder joint for inspection

Common Attributes

Voltage Measurement Range

1.8 V to 3.6 V

Voltage Resolution (8-bit)

10 mV / LSB

100 mV

-40 ^oC to +125 ^oC

1 ^oC / LSB

3 ^oC

• 100–1500 kPa pressure range

Voltage Accuracy (>2.1 V supply)

Temperature Measurement Range Run Mode

Temperature Resolution (8-bit unsigned)

• Z-axis or dual XZ-axis accelerometers

• Accelerometer standard or precision

tolerances available

Temperature Offset Accuracy (-20 ^oC ≤ TA ≤ 70 ^oC)

• High precision tolerance available for

pressure

Product Differentiation

Features

Benefits

• Low-power wake-up timer and periodic

reset driven by LFO

Tightest offset pressure accuracy

Enables predictive system implementation

Enables smallest module design for lighter weight

and space-constrained applications

Smallest package size

• Dedicated state machines for reduced

power consumption

Dual-axis XZ inertial sensor

Enables easier tire localization capability

• 8-bit MCU/S08 core with SIM, interrupt

and debug/monitor

Flexibility of software development and time to

market

8 kB customer memory/capability of interfacing with external

memory

Lowest RF power consumption

Longest battery life

• 512 Bytes RAM / 16 k Flash (8 k for

Freescale library, 8 k for applications)

High production capacity (QFN 7 x 7)

Secured supply and short lead time

• Internal 315/434 MHz RF transmitter

• Internal 125 kHz LF receiver

Documentation

Document Number Title

Description

• Six multipurpose GPIO pins (including

two A/D inputs)

FXTH871xD

FXTH871x6

FXTH871x7

AN4391

Tire Pressure Monitor Sensor Standard Tolerance Specification Data Sheet

Tire Pressure Monitor Sensor Precision Tolerance Specification Data Sheet

Tire Pressure Monitor Sensor for High Precision

Using the FXTH87 Family of LF Receivers for TPMS Application Application Note

Assembly Guidelines for QFN and DFN Packages Application Note

Data Sheet

Product Longevity Program

AN1902

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

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 and

freescale.com/pressure

Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. SMARTMOS is a

trademark of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners.

Document Number: 1500FXTH87FS REV 0

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