SLASF94A May 2024 – October 2024 MSPM0L1227 , MSPM0L1228 , MSPM0L2227 , MSPM0L2228
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
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:
Table 8-10 shows the RTC features supported in this device.
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 |
Selectable binary or binary-coded decimal (BCD) format | Yes |
Leap-year correction (valid for year 1901 through 2099) | Yes |
Two customizable calendar alarm interrupts based on minute, hour, day of the week, and day of the month | Yes |
Interval alarm interrupt to wake every minute, every hour, at midnight, or at noon | Yes |
Periodic interrupt to wake at 4096, 2048, 1024, 512, 256, or 128Hz | Yes |
Periodic interrupt to wake at 64, 32, 16, 8, 4, 2, 1, and 0.5Hz | Yes |
Interrupt capability down to STANDBY mode with STOPCLKSTBY | Yes |
Calibration for crystal offset error and crystal temperature drift (up to ±240ppm total) | Yes |
RTC clock output to pin for calibration (GPIO) | Yes |
RTC clock output to pin for calibration (TIO) | Yes |
Three bit prescaler for heartbeat function with interrupt generation | Yes |
RTC external clock selection of untrimmed 32kHz, trimmed 512Hz, 256Hz or 1Hz | Yes |
RTC time stamp capture upon detection of a timer stamp event, including:
|
Yes |
RTC counter lock function | Yes |
For more details, see the RTC chapter of the MSPM0 L-Series 32MHz Microcontrollers Technical Reference Manual`.