SLASFA2 November 2024 MSPM0G1519 , MSPM0G3519
ADVANCE INFORMATION
The RTC_B 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. The RTC_B provides common key features in relation to the Low-Frequency Sub System (LFSS).
Common key features of the RTC_B include:
Table 8-13 shows the RTC features supported in this device.
RTC Features | RTC_B |
---|---|
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 ±240 ppm total) | Yes |
RTC clock output to pin for calibration (GPIO) | Yes |
RTC clock output to pin for calibration (TIO) | - |
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:
| - |
RTC counter lock function | - |
For more details, see the RTC chapter of the MSPM0 G-Series 80MHz Microcontrollers Technical Reference Manual.