NXP Semiconductors K32 L2A Series, Reference Manual, Page: 79 / 1379

NOTE
LPTMR0_ALTn is on the same pin as the corresponding
LPTMR1_ALTn.
3.8.3.3 LPTMR prescaler/glitch filter clocking options
The prescaler and glitch filter of the LPTMR module can be clocked from one of four
sources determined by LPTMRx_PSR[PCS]. The following table shows the chip-specific
clock assignments for this field.
NOTE
The chosen clock must remain enabled if the LPTMR is to
continue operating in all required low-power modes.
LPTMR0_PSR[PCS],
LPTMR1_PSR[PCS]
Prescaler/glitch filter clock
number
Chip clock
00 0 SIRCCLK—internal reference clock (not
available in LLS and VLLS modes)
01 1 LPO—1 kHz clock (not available in
VLLS0 mode)
10 2 OSC32KCLK (not available in VLLS0
mode when using 32 kHz oscillator)
11 3 ERCLK—external reference clock (not
available in VLLS0 mode)
See Clock distribution for more details on these clocks.
3.8.4 RTC configuration
This section summarizes how the module has been configured in the chip. For a
comprehensive description of the module itself, see the module’s dedicated chapter.
Chapter 3 Chip Configuration
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 79