Power and Clock Settings Panel

Overview

There is one Power and Clock Settings panel for each project where CC13x2, CC26x2, CC13x4 or CC26x4 is selected as target chip.

The table below shows clock rate and availability in the different power modes for each task resource:

Task Resource	Clock Rate	Active Mode	Low-Power Mode	Standby Mode
Accumulator Based Math	Same as Sensor Controller	Available	Available
ADC	Same as AUX bus	Available
COMPA	Analog / asynchronous	Available	Available	Available
COMPB	32 kHz	Available	Available*	Available
Delay Insertion	2 MHz	Available	Available
Digital GPIO	Same as Sensor Controller	Available	Available
ISRC	Analog / asynchronous	Available
Reference DAC	Automatically adapted	Available	Available	Available
Pulse Counter	Asynchronous	Available	Available	Available
I2C Master	Same as Sensor Controller	Available
SPI Chip Select	Same as Sensor Controller	Available	Available
SPI Data Transfer	Same as Sensor Controller	Available	Available
TDC	Same as AUX bus	Available
Timer 0	Same as Sensor Controller	Available	Available
Timer 1	Same as Sensor Controller	Available	Available
Timer 2	24 MHz, 2 MHz or 32 kHz	Available	Available	Available
LCD Controller	Same as Sensor Controller	Available	Available	Between updates
UART Emulator	Based on Timer 0	Available
COMPA Event Trigger	Asynchronous			Wake-up trigger
COMPB Event Trigger	Asynchronous (32 kHz)			Wake-up trigger
GPIO Event Trigger	Asynchronous			Wake-up trigger
System Event Trigger	Asynchronous			Wake-up trigger
Timer 0 Event Trigger	4 kHz signal from RTC			Wake-up trigger
Timer 1 Event Trigger	4 kHz signal from RTC			Wake-up trigger
Timer 2 Event Trigger	Based on Timer 2			Wake-up trigger

* The procedures that enable/disable COMPB can only be called when the Sensor Controller (or System CPU) is in active mode.

Clock Configuration

The following settings are available:

• Clock in low-power mode (fixed) ; Select the Sensor Controller clock rate in the low-power power mode
  • Only 2 MHz clock is available
  • When the MCU domain is in active mode, the AUX bus runs at 24 MHz, and the Sensor Controller runs at 2 MHz derived from 24 MHz
  • When the MCU domain is in standby mode, the AUX bus runs at 2 MHz
• Clock in active mode ; Select the Sensor Controller clock rate in active power mode
  • The Sensor Controller can either run at 24 MHz, or at 2 MHz derived from 24 MHz
  • The AUX bus runs at 24 MHz
  • 2 MHz clock can be used to allow switching between active and low-power mode without affecting code execution speed or resources that run at Sensor Controller clock rate

Power Configuration

The following settings are available:

• Default power mode : Select the default power mode, either active or low-power
• Apply default power mode : Select whether the default power mode shall be applied only at SCIF driver initialization, or at every Sensor Controller wake-up
• Select the power mode to be applied at the start of each task code block:
  • Do not change : The power mode is not changed at the start of the task code block
  • Project default : Apply the default power mode
  • Low-power : Apply the low-power power mode
  • Active : Apply the active power mode

Note that the Dynamic Power Control resource can be used to change the power mode during a task code block.