Power Management - Texas Instruments SimpleLink CC2652PSIP Manual

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9.12 Power Management

To minimize power consumption, the CC2652PSIP supports a number of power modes and power management
features (see Table 9-1).
MODE
CPU
Flash
SRAM
Supply System
Register and CPU retention
SRAM retention
48 MHz high-speed clock
(SCLK_HF)
2 MHz medium-speed clock
(SCLK_MF)
32 kHz low-speed clock
(SCLK_LF)
Peripherals
Sensor Controller
Wake-up on RTC
Wake-up on pin edge
Wake-up on reset pin
Brownout detector (BOD)
Power-on reset (POR)
Watchdog timer (WDT)
In Active mode, the application system CPU is actively executing code. Active mode provides normal operation
of the processor and all of the peripherals that are currently enabled. The system clock can be any available
clock source (see Table
In Idle mode, all active peripherals can be clocked, but the Application CPU core and memory are not clocked
and no code is executed. Any interrupt event brings the processor back into active mode.
In Standby mode, only the always-on (AON) domain is active. An external wake-up event, RTC event, or Sensor
Controller event is required to bring the device back to active mode. MCU peripherals with retention do not need
to be reconfigured when waking up again, and the CPU continues execution from where it went into standby
mode. All GPIOs are latched in standby mode.
In Shutdown mode, the device is entirely turned off (including the AON domain and Sensor Controller), and
the I/Os are latched with the value they had before entering shutdown mode. A change of state on any I/O
pin defined as a wake from shutdown pin wakes up the device and functions as a reset trigger. The CPU can
differentiate between reset in this way and reset-by-reset pin or power-on reset by reading the reset status
register. The only state retained in this mode is the latched I/O state and the flash memory contents.
Copyright © 2022 Texas Instruments Incorporated
Table 9-1. Power Modes
SOFTWARE CONFIGURABLE POWER MODES
ACTIVE
Active
On
On
On
Full
Full
XOSC_HF or
RCOSC_HF
RCOSC_MF
XOSC_LF or
RCOSC_LF
Available
Available
Available
Available
On
On
On
Available
9-1).
Product Folder Links:
SWRS263A – FEBRUARY 2021 – REVISED JUNE 2022
IDLE STANDBY
Off Off
Available Off
On Retention
On Duty Cycled
Full Partial
Full Full
XOSC_HF or
Off
RCOSC_HF
RCOSC_MF Available
XOSC_LF or XOSC_LF or
RCOSC_LF RCOSC_LF
Available Off
Available Available
Available Available
Available Available
On On
On Duty Cycled
On On
Available Paused
CC2652PSIP
CC2652PSIP
RESET PIN
HELD
SHUTDOWN
Off Off
Off Off
Off Off
Off Off
No No
No No
Off Off
Off Off
Off Off
Off Off
Off Off
Off Off
Available Off
On On
Off Off
Off Off
Off Off
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