FXTH870502DT1 [NXP]
Tire Pressure Monitoring Sensors 100-900 kPa;
| 型号： | FXTH870502DT1 |
| 厂家： | 
NXP |
| 描述： | Tire Pressure Monitoring Sensors 100-900 kPa 监控 |
| 文件： | 总2页 (文件大小：297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
Target Applications
• Tire pressure monitoring
systems
• Ultra low-power wireless
sensing
Implementations
• Measures pressure for
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.
passenger/light duty vehicles
• Measures dual-axis
acceleration
• Measures temperature
FXTH870x TPMS Family Block Diagram
• Measures battery voltage
• Bi-directional communication
Core
System
Memories
Sub-1 GHz Radio Transmitter
64-byte
Battery-backed
RAM
16 kB Flash
315 or 434 MHz ISM band RF Tx
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-Offset Accuracy
(-40° C to +125° C) X Range
X-Offset Accuracy
(-40° C to +125° C)
Range (kPa) Accuracy (0° C to 70° C) Acceleration Z Range
Standard Tolerances
-270 g/+ 400 g range
FXTH870502DT1 100–450
FXTH870511DT1 100–450
FXTH870902DT1 100–900
FXTH870911DT1 100–900
FXTH870912DT1 100–900
7 kPa
Z
6 g
7 kPa
XZ
Z
-210 g/+240 g range
-270 g/+ 400 g range
-210 g/+240 g range
-270 g/+ 400 g range
5 g
6 g
5 g
6 g
-80 g/+90 g range
4 g
10 kPa
10 kPa
10 kPa
XZ
XZ
-80 g/+90 g range
-80 g/+90 g range
4 g
4 g
Precision Tolerances
FXTH8705026T1 100–450
FXTH8705116T1 100–450
FXTH8709026T1 100–900
FXTH8709116T1 100–900
FXTH8709126T1 100–900
7 kPa
7 kPa
Z
-270 g/+ 400 g range
-210 g/+240 g range
-270 g/+ 400 g range
-210 g/+240 g range
-270 g/+ 400 g range
3 g
3 g
3 g
3 g
3 g
XZ
Z
-80 g/+90 g range
3 g
10 kPa
10 kPa
10 kPa
XZ
XZ
-80 g/+90 g range
-80 g/+90 g range
3 g
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
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
Voltage Accuracy (>2.1 V supply)
Temperature Measurement Range Run Mode
Temperature Resolution (8-bit unsigned)
• 100–450 kPa and 100–900 kPa
pressure ranges
1
oC / LSB
3
oC
• Z-axis or dual XZ-axis accelerometers
Temperature Offset Accuracy (-20 oC ≤ TA ≤ 70 oC)
• Accelerometer standard or precision
tolerances available
Product Differentiation
Features
• Low-power wake-up timer and periodic
reset driven by LFO
Benefits
Smallest, fully integrated package size
Enables smallest module design for lighter
weight and space-constrained applications
• Dedicated state machines for reduced
power consumption
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-bit MCU/S08 core with SIM, interrupt
and debug/monitor
8 kB customer memory/capability of interfacing with
external memory
Flexibility of software development and
time to market
• 512 Bytes RAM / 16 k Flash (8 k for
Freescale library, 8 k for applications)
Lowest RF power consumption
Longest battery life
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)
FXTH870xD
FXTH870x6
AN4391
Tire Pressure Monitor System Standard Tolerance Specification Data Sheet
Tire Pressure Monitor System Precision Tolerance Specification Data Sheet
Using the FXTH87 Family of LF Receivers for TPMS Application Application Note
Product Longevity Program
AN1902
Assembly Guidelines for QFN and DFN Packages
Application Note
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
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
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