NXP Semiconductors MKW01Z128, Reference Manual, Page: 703 / 884

RTC_IER field descriptions (continued)
Field Description
0 No effect.
1 If the wakeup pin is enabled, then the wakeup pin will assert.
6–5
Reserved
This field is reserved.
4
TSIE
Time Seconds Interrupt Enable
The seconds interrupt is an edge-sensitive interrupt with a dedicated interrupt vector. It is generated once
a second and requires no software overhead (there is no corresponding status flag to clear).
0 Seconds interrupt is disabled.
1 Seconds interrupt is enabled.
3
Reserved
This field is reserved.
2
TAIE
Time Alarm Interrupt Enable
0 Time alarm flag does not generate an interrupt.
1 Time alarm flag does generate an interrupt.
1
TOIE
Time Overflow Interrupt Enable
0 Time overflow flag does not generate an interrupt.
1 Time overflow flag does generate an interrupt.
0
TIIE
Time Invalid Interrupt Enable
0 Time invalid flag does not generate an interrupt.
1 Time invalid flag does generate an interrupt.
30.3 Functional description
30.3.1 Power, clocking, and reset
The RTC is an always powered block that remains active in all low power modes.
The time counter within the RTC is clocked by a 32.768 kHz clock sourced from an
external crystal using the oscillator.
The power-on-reset signal initializes all RTC registers to their default state. A software
reset bit can also initialize all RTC registers.
Functional description
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
572 Freescale Semiconductor, Inc.