LPTMRx_PSR[PCS]
LPTMRx prescaler/glitch
filter clock
MCGIRCLK
OSCERCLK_UNDIV
ERCLK32K
LPO
Figure 5-5. LPTMRx prescaler/glitch filter clock generation
5.7.7
RTC_CLKOUT and CLKOUT32K clocking
When the RTC is enabled, the RTC_CLKOUT signal can be configured to drive to an
external pin via the associated pin muxing control, as shown below.
NOTE
RTC_CLKOUT is disabled in LLSx and VLLSx modes.
CLKOUT32K, controlled by SIM_SOPT1[OSC32KOUT], can also be driven on the pins
where the RTC_CLKOUT signal is an option, overriding the existing pin mux
configuration for that pin. The CLKOUT32K function is available in all modes of
operation. In VLLS0 mode only the RTC oscillator is available.
PTE0 is available in all packages for this device. PTE26 is not available in 64-pin
packages for this device.
Chapter 5 Clock Distribution
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 163
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