CC2640R2F-Q1 Datasheet, PDF (26/40 Pages) Texas Instruments – SimpleLink Bluetooth low energy Wireless MCU for Automotive

CC2640R2F-Q1
SWRS201 – JANUARY 2017
www.ti.com
6.8 Power Management
To minimize power consumption, the CC2640R2F-Q1 device supports a number of power modes and
power management features (see Table 6-2).
Table 6-2. Power Modes
MODE
SOFTWARE CONFIGURABLE POWER MODES
ACTIVE
IDLE
STANDBY
CPU
Active
Off
Off
Flash
On
Available
Off
SRAM
On
On
On
Radio
Available
Available
Off
Supply System
On
On
Duty Cycled
Current
Wake-up Time to CPU Active⁽¹⁾
1.45 mA + 31 µA/MHz
–
550 µA
14 µs
1 µA
151 µs
Register Retention
Full
Full
Partial
SRAM Retention
Full
Full
Full
High-Speed Clock
XOSC_HF or
RCOSC_HF
XOSC_HF or
RCOSC_HF
Off
Low-Speed Clock
XOSC_LF or
RCOSC_LF
XOSC_LF or
RCOSC_LF
XOSC_LF or
RCOSC_LF
Peripherals
Available
Available
Off
Sensor Controller
Available
Available
Available
Wake up on RTC
Available
Available
Available
Wake up on Pin Edge
Available
Available
Available
Wake up on Reset Pin
Available
Available
Available
Brown Out Detector (BOD)
Active
Active
Duty Cycled
Power On Reset (POR)
Active
Active
Active
(1) Not including RTOS overhead
SHUTDOWN
Off
Off
Off
Off
Off
0.15 µA
1015 µs
No
No
Off
Off
Off
Off
Off
Available
Available
Off
Active
RESET PIN
HELD
Off
Off
Off
Off
Off
0.1 µA
1015 µs
No
No
Off
Off
Off
Off
Off
Off
Available
N/A
N/A
In active mode, the application CM3 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 6-2).
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 will bring the processor back into active mode.
In standby mode, only the always-on domain (AON) is active. An external wake 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 turned off entirely, including the AON domain and the Sensor Controller.
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 a reset in this way, a reset-by-reset pin, or a 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.
The Sensor Controller is an autonomous processor that can control the peripherals in the Sensor
Controller independently of the main CPU, which means that the main CPU does not have to wake up, for
example, to execute an ADC sample or poll a digital sensor over SPI. The main CPU saves both current
and wake-up time that would otherwise be wasted. The Sensor Controller Studio enables the user to
configure the sensor controller and choose which peripherals are controlled and which conditions wake up
the main CPU.
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