NXP Semiconductors
FXTH87E
FXTH87E, Family of Tire Pressure Monitor Sensors
FXTH87ERM
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Reference manual
Rev. 5.0 — 4 February 2019
40 / 183
stack the PCL, PCH, X, A, and CCR CPU registers, set the I bit, and then fetch the
interrupt vector for the highest priority pending interrupt. Processing then continues in the
interrupt service routine.
The triggering of any of these vector fetches will wake the MCU from any of the STOP
modes.
The LF, SMI, and ADC user interrupt vectors are not accessed when the prior function
under execution is a firmware function. See Firmware User Guide for additional details
regarding firmware and disabled interrupts.
Table 31. Vector summary
Vector
Priority
Vector
No.
Jump Table
Vector Addr
(High/Low)
Vector
Name
Module
Source Flags
Enables Description
15
$DFE0 - $DFE1
Vkbi
KBI
KBF
KBIE
Keyboard interrupt pins PTA[3:0]
14
$DFE2 - $DFE3
Reserved
13
$DFE4 - $DFE5
Reserved
12
$DFE6 - $DFE7
Vrti
Sys Ctrl
RTIF
RTIE
Interrupt from the RTI when in Run or
Stop4 mode and the periodic wakeup
timer has timed out.
LFIDF
LFIDIE
Interrupt from LFR in data mode when a
valid wake ID has been received.
LFCDF
LFCDIE
Interrupt from LFR in carrier mode when
a carrier present for the required time.
LFERF
LFERIE
Interrupt from LFR in the Manchester
decode mode when an error is detected.
11
$DFE8 - $DFE9
Vlfrcvr
LFR
LFDRF
LFDRIE
Interrupt from LFR in the Manchester
decode mode when an 8-bit data byte
has been successfully received.
10
$DFEA - $DFEB
Reserved
RFIF
Interrupt from the RFM when the data
buffer has been completely sent.
9
$DFEC - $DFED
Vrf
RFM
RFEF
RFIEN
Interrupt from the RFM when
transmission error detected.
8
$DFEE - $DFEF
Vsmi
SMI
SMIF
SMIIE
Interrupt from the Sensor Measurement
Interface when the channel setting delay
has expired.
7
$DFF0 - $DFF1
Vtpm
1ovf
TPM1
TOF
TOIE
Interrupt from the TPM1 when the timer
overflows.
6
$DFF2 - $DFF3
Vtpm
1ch1
TPM1
CH1F
CH1IE
Interrupt from the TPM1 when the
selected event for channel 1 occurs.
5
$DFF4 - $DFF5
Vtpm
1ch0
TPM1
CH0F
CH0IE
Interrupt from the TPM1 when the
selected event for channel 0 occurs.
4
$DFF6 - $DFF7
Vwu
ktmr
PWU
WUKI
WUK[5:0] Interrupt from the PWU when the
wakeup time interval has elapsed.
Lower
Higher
3
$DFF8 - $DFF9
Vlvd
Sys Ctrl
LVDF
LVDIE
Interrupt from the LVD when the supply
voltage has dropped below the LVD
threshold.
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