Users Manual

Table Of Contents
R01UH0823EJ0110 Rev.1.10 Page 1490 of 1852
Nov 30, 2020
RX23W Group 41. Bluetooth Low Energy (BLE)
41.5 Usage Notes
41.5.1 RF Transceiver Power-Supply
In the case of the 85-pin BGA and 56-pin QFN products, the RF transceiver power supply is selectable as either the DC-
to-DC converter or linear regulator. Only the linear regulator is available for the 83-pin LGA product.
Figure 41.4 shows an example of the externally connected circuit for BLE when the DC-to-DC converter is selected
(only available for the 85-pin BGA and 56-pin QFN products).
Figure 41.5 and Figure 41.6 respectively show
examples of the externally connected circuit for BLE when the linear regulator is selected for an 85-pin BGA or 56-pin
QFN product and for an 83-pin LGA product.
Figure 41.4 Example of the BLE Externally Connected Circuit When the DC-to-DC Converter is Selected (85-
pin BGA, 56-pin QFN)
Figure 41.5 Example of the BLE Externally Connected Circuit When the Linear Regulator is Selected (85-pin
BGA, 56-pin QFN)
This MCU
DC-to-DC
converter
DCLOUT
10 µH
2.2 µF
DCLIN_A
DCLIN_D
L0
*1
Note 1. Including wiring for the inductor L0 is recommended to reduce the noise of the DC-to-DC
converter when designing the basic board.
Details are explained in the guidelines for designing Bluetooth boards (R01AN4534EJ).
Obtain the latest version of this document from the Renesas website.
RF transceiver
power-supply
This MCU
Linear
regulator
RF transceiver
power-supply
DCLOUT
0.47 µF
DCLIN_A
DCLIN_D