CHAPTER 2 CONNECTION BETWEEN MCU AND RF TRANSCEIVER
Page 15 of 920
2.5
Power Configuration
Power is supplied to both the MCU and RF unit. The RF unit includes a DC-DC converter. The power switched at
the DC-DC converter is output to the DDCOUT pin. The power is smoothed by an inductor and capacitor to step
down the voltage, and then supplied to the REGIN.
Figure 2 - 2 shows the power configuration of the RL78/G1H.
Figure 2 - 2 Power Configuration
47
μ
F
1
μ
F
* Place the entire capacitor and
inductor elements close to the pin.
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
1
μ
F
0.47
μ
F
10
μ
H
1.8 to 3.6 V
RF
MCU
VDD
VCCDDC
VCCRF
DDCOUT
REGIN
VREGO1
VREGO2
VREGO3
VSSDDC
VSS
AGNDRF2
AGNDRF1
REGC
Summary of Contents for RL78/G1H
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