SWCU193 April 2023 CC2340R2 , CC2340R5 , CC2340R5-Q1
PMUD is composed of two components, BATMON (battery monitoring unit) and DCDC control logic.
BATMON monitors both the VDDS supply voltage and the temperature through an on-chip temperature sensor, outputs the voltage dependent control signals to the I/O pads, gives a coarse temperature measure and provides a SW interface for accessing battery state and temperature measurements. When enabled, the battery and temperature monitor module is operational in all operation modes except the lowest power mode, SHUTDOWN. When the device is in STANDBY, the measurements of the battery monitor module is limited to recharge cycles. At least two measurements are performed in each recharge cycle.
The battery monitor provides voltage and temperature information to several modules. This is done to enable correct operation and lowest power consumption. Therefore, the recommendation is to not modify any settings in the battery monitor or turn the battery monitor off.
DCDC outputs the control signals for DCDC switches, measures battery voltage, and also takes care of turning off GLDO when not required.