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For method to select each jumper plug, when the power supply connected to VCC3 is 3.3 V ± 0.3 V,
VCCB5 should be set to VCC3H. In this case, the jumper plugs corresponding to the VCC5 pins that
have a power supply with a voltage different to VCC3 (5 V ± 10 %) should be set to VCC5H. The
jumpers for the pins with the same power supply voltage as VCC3 should be set to VCC3H. The
following shows an example.
Example
VCC3 = 3.3 V
Pin 133 (VCC5) = 3.3 V
Pin 147 (VCC5) = 5 V
Pin 162 (VCC5) = 5 V
Pin 176 (VCC5) = 5 V
Jumper plug settings
VCCB1 = VCC5H
VCCB2 = VCC5H
VCCB3 = VCC5H
VCCB4 = VCC3H
VCCB1 = VCC3H
When the power supply connected to VCC3 is 5 V ± 10 %, VCCB5 should be set to VCC5H. In this
case, the jumper plugs corresponding to the VCC5 pins that have a power supply with a voltage dif-
ferent to VCC3 (3.3 V ± 0.3 V) should be set to VCC3H. The jumpers for the pins with the same
power supply voltage as VCC3 should be set to VCC5H. The following shows an example.
Example
VCC3 = 5 V
Pin 133 (VCC5) = 3.3 V
Pin 147 (VCC5) = 5 V
Pin 162 (VCC5) = 5 V
Pin 176 (VCC5) = 5 V
Jumper plug settings
VCCB1 = VCC5H
VCCB2 = VCC5H
VCCB3 = VCC5H
VCCB4 = VCC3H
VCCB1 = VCC5H
If connecting a single power supply (5 V ± 10 % or 3.3 V ± 0.3 V) to both VCC3 and VCC5, the unit
will operate correctly regardless of the settings (VCC5H or VCC3H) .
4.2 Use of Pull-Up Resistor
■ Use of pull-up resistor
A 100 kΩ pull-up resistor is connected to pin 99 on the mass production MCU which connects to the
VCC3 power supply.
The output signal from the header to this pin does not contain any component other than the pull-up.
If this pull-up component is not required by the user system, please remove the resistor.