NXP Semiconductors
FXTH87E
FXTH87E, Family of Tire Pressure Monitor Sensors
ID27 — 0 to identify FXTH87E family
ID28:29 — Upper 2 bits of assembly lot ID
ID30 — 0x1 to identify sub-con B, 0x0 to identify sub-con A
ID31 — 0x1 to identify NXP as device supplier
Note: Prior to erasing the flash memory, users are advised to first copy the contents of
the CODE0 through CODE5 data into a secure and retrievable database. The contents
of CODE0 through CODE5 are unique to each part number, configuration of pressure
and accelerometer ranges, and serial numbers, and must be replaced as part of the user
flash programming processes.
Table 164.ꢀDevice ID coding descriptions
Field
Description
CODE0
7:0
Reserved for NXP firmware description.
Reserved
CODE1
7:5
Revision number for the multiple-chip-module silicon.
0x3 up to 0x7
ES
Calibrated range for pressure. The range is a combination of this bit and the PRESS-L bit, below.
bit 0 = 0, bit 4 = 0 indicates a 100-500 kPa range
CODE1
4
bit 0 = 0, bit 4 = 1 indicates a 100-900 kPa range
bit 0 = 1, bit 4 = 1 indicates a 100-1500 kPa range
PRESS-H
Type of accelerometer.
CODE1
3:2
00 - None
01 - One accelerometer with X-axis orientation
10 - One accelerometer with Z-axis orientation
11 - Two accelerometers with X- and Z-axis orientations
ACC
Special calibration for accelerometer.
0 = standard -215 to +305 g Z-axis
1 = extended -285 to +400 g Z-axis
CODE1
1
Calibrated range for pressure. The range is a combination of this bit and the PRESS-H bit, above.
bit 0 = 0, bit 4 = 0 indicates a 100-500 kPa range
CODE1
0
bit 0 = 0, bit 4 = 1 indicates a 100-900 kPa range
bit 0 = 1, bit 4 = 1 indicates a 100-1500 kPa range.
PRESS-L
CODE2:4
7:0
28-bit serial number for each device. All numbers to be unique with numbering sequence being a
sequential counter for each product type.
CODE5
3:0
ID27:0
CODE5
7:4
4-bit number assigned to vendor type.
If these 4 bits are unspecified as part of the complete FLASH programming by the customer, then these 4
bits are programmed as described above at Table 163.
ID31:28
16.2.3 Definition of signal ranges
Each measured parameter (pressure, voltage, temperature, acceleration) results from
an ADC10 conversion of an analog signal. This ADC10 result may then be passed
FXTH87ERM
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2019. All rights reserved.
Reference manual
Rev. 5.0 — 4 February 2019
161 / 183
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