Wwdt; Rtc; Timers (Timx) - Texas Instruments MSPM0G350 Series Manual

MSPM0G3507-Q1, MSPM0G3506-Q1, MSPM0G3505-Q1
SLASF88 – OCTOBER 2023
• Two configurable receive FIFOs (up to 64 elements each)
• Up to 128 filter elements
• Two interrupt lines
• Power-down and wake-up support
• Timestamp counter
For more details, see the CAN-FD chapter of the
Reference Manual.

8.27 WWDT

The windowed watchdog timer (WWDT) can be used to supervise the operation of the device, specifically code
execution. The WWDT can be used to generate a reset or an interrupt if the application software does not
successfully reset the watchdog within a specified window of time. Key features of the WWDT include:
• 25-bit counter
• Programmable clock divider
• Eight software selectable watchdog timer periods
• Eight software selectable window sizes
• Support for stopping the WWDT automatically when entering a sleep mode
• Interval timer mode for applications which do not require watchdog functionality
For more details, see the WWDT chapter of the
Manual.

8.28 RTC

The real-time clock (RTC) 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. Key features of the RTC
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 128 Hz
• Interval alarm interrupt providing periodic wake-up at 64, 32, 16, 8, 4, 2, 1, and 0.5 Hz
• Calibration for crystal offset error (up to +/- 240ppm)
• Compensation for temperature drift (up to +/- 240ppm)
• RTC clock output to pin for calibration
For more details, see the RTC chapter of the
Manual.

8.29 Timers (TIMx)

The timer peripherals in these devices support the following key features, for specific configuration see
8-15:
Specific features for the general-purpose timer (TIMGx) include:
• 16-bit up, down, up-down or down-up counter, with repeat-reload mode
• 32-bit up, down, up-down or down-up counter, with repeat-reload mode
• Selectable and configurable clock source
• 8-bit programmable prescaler to divide the counter clock frequency
• Two independent channels for
– Output compare
– Input capture
– PWM output
– One-shot mode
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