XM33C321ASPZR datasheet(89/122 Pages) TI2

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Table 8-18. TIMx Configurations (continued)

TIMER

NAME

POWER

DOMAIN

RESOLUTION

PRESCALE

REPEAT

COUNTER

CAPTURE /

COMPARE

CHANNELS

PHASE

LOAD

SHADOW

LOAD

SHADOW

DEADBAND

FAULT

QEI

TIMG12_0

PD1

32-bit

–

Yes

–

Table 8-19. TIMx Cross Trigger Map (PD1)

TSEL.ETSEL Selection

TIMA0_0, TIMA0_1

TIMG8_0, TIMG8_1

TIMG4_2, TIMG4_3

TIMG12_0

TIMA0_0.TRIGO

Reserved

TIMA0_1.TRIGO

Reserved

TIMG4_2.TRIGO

TIMG4_3.TRIGO

TIMG12_0.TRIGO

TIMG8_0.TRIGO

TIMG8_1.TRIGO

7 to 31

Reserved

18-31

Reserved

Table 8-20. TIMx Cross Trigger Map (PD0)

TSEL.ETSEL Selection

TIMG4_0

TIMG4_1

TIMG4_0.TRIG0

TIMG4_1.TRIG0

2 to 31

Reserved

For more details, see the TIMx chapter of the MSPM33C3x 160-MHz Microcontrollers Technical Reference

Manual.

8.16.2 RTC_A

The RTC_A instance of the real-time clock operates off of a 32kHz input clock source (typically a low frequency

crystal) and provides a time base to the application with multiple options for interrupts to the CPU. RTC_A

provides common key features in relation to the Low-Frequency Subsystem (LFSS).

Common key features of RTC_A include:

• Counters for seconds, minutes, hours, day of the week, day of the month, month, and year

• Binary or BCD format

• Leap-year handling

• One customizable alarm interrupt based on minute, hour, day of the week, and day of the month

• Interval alarm interrupt to wake every minute, every hour, at midnight, or at noon

• Interval alarm interrupt providing periodic wake-up at 4096, 2048, 1024, 512, 256, or 128Hz

• Interval alarm interrupt providing periodic wake-up at 64, 32, 16, 8, 4, 2, 1, and 0.5Hz

• Calibration for crystal offset error (up to ±240ppm)

• Compensation for temperature drift (up to ±240ppm)

• RTC clock output to pin for calibration

• Three bit prescaler for heartbeat function with interrupt generation

• RTC external clock selection of untrimmed 32kHz, trimmed 512Hz, 256Hz, or 1Hz

• RTC time stamp capture upon detection of a timer stamp event, including tamper (TIO) event and VDD fail

event

• RTC counter lock function

Table 8-21 shows the RTC features supported in this device.

Table 8-21. RTC Instances and Key Features

RTC Features

RTC_A

Power enable register

Real-time clock and calendar mode providing seconds, minutes, hours, day of week, day of month, and year

Yes

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MSPM33C321A, MSPM33C3219

SLASFB6A – DECEMBER 2025 – REVISED SEPTEMBER 2026

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