This application report describes the required hardware changes when moving from a CC26x2 or CC2640R2 device to the CC2340R5 SimpleLink™ wireless MCU.
SimpleLink™ is a trademark of Texas Instruments.
Bluetooth® is a registered trademark of Bluetooth SIG, Inc.
All trademarks are the property of their respective owners.
The bulk decoupling capacitor required for the CC2340R5 has changed from one 22 µF capacitor to one 10 µF capacitor. The remaining decoupling capacitors are the same, four 100 nF capacitors distributed equally among the four VDDS pins.
The CC2340R5 limits which peripherals can be mapped to the device pins. To identify which pins are capable of supporting the peripherals required for your design, see the CC2340R5 SimpleLink™ Bluetooth® 5.3 Low Energy Wireless MCU Data Sheet.
The CC2340R5 and CC2640R2 use the same output network. Both designs use one 10 µF capacitor and one 10 µH inductor. For additional specifications for the inductor, see the LP-EM-CC2340R5 Design Files.