SWCU194 March 2023 CC1314R10 , CC1354P10 , CC1354R10 , CC2674P10 , CC2674R10
Shutdown mode is defined as having no active power regulator in the CC13x4x10 and CC26x4x10 device platform. Do not use shutdown as a power mode to conserve power during normal operation of the device.
Before putting the CC13x4x10 and CC26x4x10 device platform in shutdown mode, I/O pins are latched to keep their output values in shutdown—this is the only difference between holding the devices in reset with the reset pin and shutdown mode.
Only an enabled pin interrupt or reset pin can wake up the CC13x4x10 and CC26x4x10 device platform from shutdown mode.
Table 7-7 shows the steps for taking the CC13x4x10 and CC26x4x10 device into Shutdown. TI recommends using the TI Power Manager for this process.
Description | Register | Required Step |
---|---|---|
Configure the wake-up pin | IOC:IOCFGxx.WU_CFG | Yes |
Enable pad sleep to latch device outputs before Shutdown | AON_PMCTL:SLEEPCTL | Yes |
Synchronize transactions to AON domain | AON_RTC.SYNC |
Yes (Read register) |
Enable shutdown and latch I/Os | AON_PMCTL:SHUTDOWN.EN | Yes |
Stop the system CPU to start the power-down sequence | WFI or WFE | Yes |