FXTH87E
FXTH87E, Family of Tire Pressure Monitor Sensors
Rev. 5.0 — 4 February 2019
Reference manual
1 About this document
1.1 Purpose
This reference manual describes the features, architecture, and programming model of
the FXTH87E family of devices.
1.2 Audience
This document is primarily for system architects and software application developers who
are using or considering use of the FXTH87E in a system.
1.3 Related documentation
The FXTH87E device features and operations are described in a variety of reference
manuals, user guides, and application notes. To find the most-current versions of these
documents:
1. Go to the FXTH87E page on NXP.com at: http://www.nxp.com/FXTH87E
2. Select the documentation tab and review the related documentation.
Contact NXP sales representatives for performance attributes such as electrical,
mechanical, and time-based characteristics.
2 Product profile
2.1 General description
The FXTH87E is a small (7 x 7 mm), fully integrated tire pressure monitoring sensor
(TPMS). It also provides low transmitting power consumption, large customer memory
size and dual-axis accelerometer architecture. The FXTH87E TPMS solution integrates
an 8-bit microcontroller (MCU), pressure sensor, XZ-axis or Z-axis accelerometer and RF
transmitter.
2.2 Features and benefits
• Long battery service life
• Provided software for power optimization
• Pin for pin electrical connections compatible with FXTH87-based customer applications
• Included firmware subroutines compatible with FXTH87-based customer software
• Pressure sensor with one of three calibrated pressure ranges
• Temperature sensor
• Optional XZ- or Z-axis accelerometer with adjustable offset option
• Voltage reference measured by ADC10
NXP [ NXP ]
