NXP Semiconductors
FXTH87E
FXTH87E, Family of Tire Pressure Monitor Sensors
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
Jump Table
Vector Addr
(High/Low)
Vector Vector
Vector Module
Name Source
Flags
Enables Description
Priority
No.
15
14
13
$DFE0 - $DFE1
$DFE2 - $DFE3
$DFE4 - $DFE5
Vkbi
KBI
KBF
KBIE
Reserved
Reserved
Interrupt from the RTI when in Run or
Keyboard interrupt pins PTA[3:0]
12
$DFE6 - $DFE7
$DFE8 - $DFE9
Vrti
Sys Ctrl
RTIF
RTIE
Stop4 mode and the periodic wakeup
timer has timed out.
Interrupt from LFR in data mode when a
valid wake ID has been received.
LFIDF
LFCDF
LFERF
LFIDIE
LFCDIE
LFERIE
Lower
Interrupt from LFR in carrier mode when
a carrier present for the required time.
11
Vlfrcvr
LFR
Interrupt from LFR in the Manchester
decode mode when an error is detected.
Interrupt from LFR in the Manchester
decode mode when an 8-bit data byte
has been successfully received.
LFDRF
LFDRIE
10
9
$DFEA - $DFEB
$DFEC - $DFED
Reserved
Interrupt from the RFM when the data
buffer has been completely sent.
RFIF
Vrf
RFM
SMI
RFIEN
SMIIE
Interrupt from the RFM when
transmission error detected.
RFEF
Interrupt from the Sensor Measurement
Interface when the channel setting delay
has expired.
8
$DFEE - $DFEF
Vsmi
SMIF
Vtpm
1ovf
Interrupt from the TPM1 when the timer
overflows.
7
6
5
4
$DFF0 - $DFF1
$DFF2 - $DFF3
$DFF4 - $DFF5
$DFF6 - $DFF7
TPM1
TPM1
TPM1
PWU
TOF
CH1F
CH0F
WUKI
TOIE
CH1IE
Higher
Vtpm
1ch1
Interrupt from the TPM1 when the
selected event for channel 1 occurs.
Vtpm
1ch0
Interrupt from the TPM1 when the
selected event for channel 0 occurs.
CH0IE
Vwu
ktmr
Interrupt from the PWU when the
wakeup time interval has elapsed.
WUK[5:0]
Interrupt from the LVD when the supply
voltage has dropped below the LVD
threshold.
3
$DFF8 - $DFF9
Vlvd
Sys Ctrl LVDF
LVDIE
FXTH87ERM
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Reference manual
Rev. 5.0 — 4 February 2019
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