SLAAE74A December 2022 – March 2023 MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G3105 , MSPM0G3106 , MSPM0G3107 , MSPM0G3505 , MSPM0G3506 , MSPM0G3507 , MSPM0L1105 , MSPM0L1106 , MSPM0L1303 , MSPM0L1304 , MSPM0L1305 , MSPM0L1306 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346
Different clock signals are supported in different low-power modes to reduce system power consumption. The following sections describe the differences in the clock signals of the MSP430 and MSPM0 MCUs.
Clock | MSP430 | MSPM0L | MSPM0G |
---|---|---|---|
MCLK | Source CPU and some digital peripherals | Main system clock for PD1 bus and peripherals | Main system clock for PD1 bus and peripherals |
CPUCLK | CPU clock derived from MCLK | CPU clock derived from MCLK | |
SMCLK | Subsystem main clock for peripherals working independently from CPU | Main system clock for PD0 peripherals and PD0 bus, derived from MCLK | Main system clock for PD0 peripherals and PD0 bus, derived from MCLK |
ACLK | Auxiliary clock 32 kHz | Fixed 32-kHz clock | Fixed 32-kHz clock |
MFCLK | Fixed 4 MHz synchronized to MCLK | Fixed 4 MHz synchronized to MCLK | |
MFPCLK | Fixed 4 MHz | Fixed 4 MHz |