Texas Instruments SimpleLink CC2620 Technical Reference Manual page 426

Introduction
6.1.5.3 Idle Mode
Idle mode is defined as any possible chip state where CPU_PD is powered off while any other module can
be powered. In idle mode, all modules are available and power consumption is highly application
dependent.
The CC26xx and CC13xx devices are put in idle mode with the following requirements:
• PRCM:PDCTL1.CPU_ON = 0
• CPU_SCS:SCR.SLEEPDEEP = 1
• WFI or WFE active
The CC26xx and CC13xx devices may wake up from any wakeup source.
6.1.5.4 Standby Mode
Standby mode is defined as all power domains in the MCU_VD voltage domain being powered off and the
micro LDO supplying AON_VD and MCU_VD (see
the CC26xx and CC13xx devices still have functionality other than maintaining I/O output pins (see
Table 6-6)
All parts in MCU_VD with retention, as shown in
in MCU_VD must be reconfigured after wake up from Standby mode.
Sensor controller is available in autonomous mode when the CC26xx and CC13xx devices are in standby
mode.
Possible wake-up sources are events from I/O, JTAG, RTC, and the sensor processor.
The following are prerequisites for the CC26xx and CC13xx devices to enter standby mode:
• AUX_PD is powered down or powered off and disconnected from the system bus
• Request micro LDO to supply digital parts (see
• JTAG_PD is powered off
• The SCLK_HF clock is derived from the 48-MHz RC oscillator
• The SCLK_LF clock is derived from one of the following clock sources:
– 32-kHz RC oscillator
– 32.768-kHz crystal oscillator
426 Power, Reset, and Clock Management
Figure
Figure 6-3, are retained in standby mode. All other logic
Figure
Copyright © 2015, Texas Instruments Incorporated
6-2). Standby is the lowest power mode where
6-2)
SWCU117C – February 2015 – Revised September 2015
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