On-Chip Switching Regulator (3.3 V To 1.0 V) Connection; Figure 7-8. On-Chip Switching Regulator Pin Connection; Figure 7-9. On-Chip Switching Regulator Pin Connection (Out Of Use) - Renesas mPD720231 User Manual

μ
PD720231

7.8 On-Chip Switching Regulator (3.3 V to 1.0 V) Connection

Remark It is mandatory to put ceramic capacitors (22
AVDD33IN2. Common impedance coupling between AVDD33IN1 and AVDD33IN2 must be
avoided.
In case of not using internal switching regulators, please handle each pins as in Figure 7-9.
Figure 7-9.
R19UH0094EJ0100 Rev 1.00
Mar 1, 2013
Figure 7-8. On-Chip Switching Regulator Pin Connection
µPD720231
VDD10
SW Regulator
LX1
AVDD33IN1
AVDD33IN2
On-Chip Switching Regulator Pin Connection (out of use)
µPD720231
VDD10
SW Regulator
LX1
AVDD33IN1
AVDD33IN2
7. How to Connect to External Elements
FB
4.7 µH
Schottky
22 µF
Barrier
Diode
3.3 V
22 µF
3.3 V
22 µF
μ
F is recommended) on AVDD33IN1 and
1.0 V
1.0 V
FB
Open
10 µF
3.3 V
22 µF
1.0 V
0.1 µF
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