Texas Instruments SimpleLink CC2620 Technical Reference Manual page 427

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Table 6-6. Example Sequence for Setting CC26xx and CC13xx in Standby Mode
Description
Allow for power down
Enable the DC-DC converter for
lower power
Set the HF clocks to correct source
Set the LF clocks to correct source
Configure recharge interval
Configure one or more wake-up
sources for MCU
Configure power-down clock for MCU AON_WUC:MCUCLK.PWR_DWN_SRC
Configure power-down clock for AUX
Configure system SRAM retention
Turn off JTAG
Configure the wake-up source to
generate an event
Request AUX_PD power down
Disconnect AUX from system bus
Latch I/O state
Turn off power domains and verify
they are turned off
Request digital supply to be Micro
LDO
Synchronize transactions to AON
domain
Set the system CPU SLEEPDEEP bit CPU_SCS:SCR.SLEEPDEEP
Stop the system CPU to start the
power-down sequence
SWCU117C – February 2015 – Revised September 2015
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Register
AON_WUC:CTL0.PWR_DWN_DIS
AON_SYSCTL:PWRCTL.DCDC_ACTIVE
DDI_0_OSC:CTL0.SCLK_HF_SRC_SEL
DDI_0_OSC:CTL0.SCLK_LF_SRC_SEL
AON_WUC:RECHARGECFG
AON_EVENT:MCUWUSEL
AON_WUC:AUXCLK.PWR_DWN_SRC
AON_WUC:MCUCFG.SRAM_RET_EN
AON_WUC:JTAGCFG:JTAG_PD_FORCE_ON
IOC:IOCFG / AON_RTC / AUX
AUX_WUC:PWRDWNREQ.REQ
AUX_WUC:MCUBUSCTL.DISCONNECT_REQ
AON_IOC:IOCLATCH.EN
PRCM.PDCTL0
PRCM.PDCTL1
PRCM.PDSTAT0
PRCM.PDSTAT1
PRCM:VDCTL.ULDO
AON_RTC.SYNC.WBUSY
WFI or WFE
Copyright © 2015, Texas Instruments Incorporated
Required Step
No
(Default: Enabled)
No
(Default: Global LDO)
Yes
Yes
Yes
Yes
No
(Default: No clock)
No
(Default: No clock)
No
(Default: Retention
enabled)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
(Read register)
Yes
Yes
Power, Reset, and Clock Management
Introduction
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