Freescale Semiconductor Document Number: FXTH870x6
Data Sheet: Advance Information Rev. 1.3, 09/2014
An Energy-Efficient Solution by Freescale
FXTH870x6 Tire Pressure Monitor
FXTH870x6
Sensor
The FXTH870x6 family is comprised of the following functions all within the
same package.
Top and bottom view
Features
Pressure sensor with one of two calibrated pressure ranges
100 - 450 kPa
100 - 900 kPa
Temperature sensor
Optional XZ- or Z-axis accelerometer with adjustable offset option
Voltage reference measured by ADC10
24-Pin, 1-hole lid
Six-channel, 10-bit analog-to-digital converter (ADC10) with two external
7 x 7 QFN
I/O inputs
Case 2264-03
8-bit MCU
S08 Core with SIM and interrupt
512 RAM
Top view
8K FLASH (in addition to 8K providing factory firmware and trim
data)
ID Feature
64-byte, low-power, parameter registers
on top lid
Dedicated state machines to sequence routine measurement and
transmission processes for reduced power consumption PTB1 1 18 PTA3
Internal 315-/434-MHz RF transmitter
PTA2
2 17 LFA
External crystal oscillator
PTA1 3 16 LFB
PLL-based output with fractional-n divider
BKGD/PTA4
PTA0 4 15
OOK and FSK modulation capability
RESET 5 14 X0
Programmable data rate generator
V 6 13 X1
Manchester, Bi-Phase or NRZ data encoding
SS
256-bit RF data buffer variable length interrupt
Direct access to RF transmitter from MCU for unique formats
Low power consumption (less than 8 mA at 434 MHz, 5 dBM at
Pin connections
3.0 V, 25 C)
Differential input LF detector/decoder on independent signal pins
Seven multipurpose GPIO pins
Four pins can be connected to optional internal pullups/pulldowns and STOP4 wakeup interrupt
Two of seven pins can be connected to a channel on the ADC10
Two of seven pins can be connected to a channel on the TPM1
Real-Time Interrupt driven by LFO with interrupt intervals of
8, 16, 32, 64, 128, 256, 512 or 1024 ms
Low-power, wakeup timer and periodic reset driven by LFO
Watchdog timeout with selectable times and clock sources
Two-channel general purpose timer/PWM module (TPM1)
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
2014 Freescale Semiconductor, Inc. All rights reserved.
V
7 24 PTB0
DD
V 8 23 N/C
DDA
V
SSA 9 22 N/C
RFV 10 21 N/C
SS
RF 11 20 N/C
V
REG 12 19 N/C Internal oscillators
MCU bus clock of 0.5, 1, 2 and 4 MHz (1, 2, 4 and 8 MHz HFO)
Low frequency, low power time clock (LFO) with 1 ms period
Medium frequency, controller clock (MFO) of 8 sec period
Low-voltage detection
Normal temperature restart in hardware (over- or under-temperature detected by software)
ORDERING INFORMATION
Part number Accelerometer axis Package Range Code1
FXTH8705026T1 Z 2264 (7 x 7, 1-hole lid) 100-450 kPa $08
FXTH8705116T1 XZ 2264 (7 x 7, 1-hole lid) 100-450 kPa $0C
FXTH8709026T1 Z 2264 (7 x 7, 1-hole lid) 100-900 kPa $18
FXTH8709116T1 XZ 2264 (7 x 7, 1-hole lid) 100-900 kPa $1C
FXTH8709126T1 XZ Ext. Range 2264 (7 x 7, 1-hole lid) 100-900 kPa $1E
Code1 Code0
FXTH8709226T1 XZ 2264 (7 x 7, 1-hole lid) 100-900 kPa $1C Rel11
Related Documentation
The FXTH870x6 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 Freescale homepage at: