Renesas PCA7438F-80A - Manual (Page 12)

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4.3 Setting the Jumper Switches
(1) Jumper switch SW1
Set the SW1 according to the output type of MCU's ports P2
0
- P2
3
(data buses D0-D3, No. 64-61
pins). For setting, see Table 4.1 and Figure 4.2.
• Ports P2
0
- P2
3
: CMOS output .............................................................................. SW1: CMOS
• Ports P2
0
- P2
3
: Pch output ................................................................................... SW1: Pch
• Ports P2
0
- P2
3
: Nch output .................................................................................. SW1: Nch
(2) Jumper switch SW2
Set the SW2 according to the output type of MCU's ports P2
4
- P2
7
(data buses D4-D7, No. 60-57
pins). For setting, see Table 4.1 and Figure 4.2.
• Ports P2
4
- P2
7
: CMOS output .............................................................................. SW2: CMOS
• Ports P2
4
- P2
7
: Pch output ................................................................................... SW2: Pch
• Ports P2
4
- P2
7
: Nch output .................................................................................. SW2: Nch
(3) Jumper switch SW3
How to set the SW3 is shown below.
• When No. 12 pin of the MCU is dedicated to pin X
CIN ..................................................................
SW3: ON
• When pin X
CIN
also serves as an I/O port (e.g. P4
1
/X
CIN
) ..................................... SW3: OFF
• When there is no pin X
CIN .............................................................................................................................................
SW3: OFF
Table 4.1 Jumper switch settings
Figure 4.2 Jumper switch settings
Note: SW1 ....... Pch
SW2 ....... Pch
SW3 ....... OFF
MCU
M38B5XEXFP
M38B5XEXFS
Example
M38B59EFFP
M38B59EFFS
SW1 SW2 SW3
Pch Pch OFF