RL78/G14
Recommended PCB Layout for Reducing Noise
3. Description of the Test Board
This section shows examples of the recommended layout and non-recommended layout. Both the recommended board
and non-recommended board are made with the same schematics and components. Only the PCB layouts are different.
With the recommended methods, the recommended PCB board can achieve higher reducing noise performance.
3.1
Schematics of the Test Board
The recommended layout and the non-recommended one are designed with the same schematics.
Figure 3.1 shows the schematics of the circuits around the MCU.
Figure 3.1 Schematics of the Circuits around the MCU
3.2
PCB Layout of the Two Test Boards
This section shows examples of the recommended layout and non-recommended layout. The PCB layout should be
designed in accordance with recommended one to achieve higher reducing noise performance. The reasons why the
PCB layout on the left in Figure 3.2 is recommended are explained in next section.
Figure 3.2 shows the PCB layout around the MCU of two test boards.
R01AN1876EC0100 Rev. 1.00
Page 5 of 14
Feb. 28, 2014
