Chapter 1
Overview
Pin Description I - 17
P40 SEG27/SBCS0B
Input/
Output
Yes Port 4
-At each port, the I/O direction and the pull-up resistor
connection is controlled individually.
-At LSI reset, each pin is set to input mode and the pull-up
resistor is not connected.
-The drive strength of output Nch transistor can be
changed.
P41 SEG26/SBI2A Yes
P42 SEG25/SBO2A/SDA2A Yes
P43 SEG24/SBT2A/SCL2A Yes
P44 SEG23/SBCS2A Yes
P45 SEG22/SBI1B/RXD1B Yes
P46 SEG21/SBO1B/TXD1B Yes
P47 SEG20/SBT1B Yes
P50 SEG19/SBCS1B
Input/
Output
Yes Port 5
-At each port, the I/O direction and the pull-up resistor
connection is controlled individually.
-At LSI reset, each pin is set to input mode and the pull-up
resistor is not connected.
-The drive strength of output Nch transistor can be
changed.
P51 SEG18/SBI3B Yes
P52 SEG17/SBO3B/SDA3B Yes
P53 SEG16/SBT3B/SCL3B Yes
P54 SEG15/KEY0B/SBCS3B Yes
P55 SEG14/KEY1B/TM1IOA Yes
P56 SEG13/KEY2B/TM3IOA Yes
P57 SEG12/KEY3B/TM8IOA/CLKOUTB Yes
P60 SEG11/IRQ0B
Input/
Output
Yes Port 6
-At each port, the I/O direction and the pull-up resistor
connection is controlled individually.
-At LSI reset, each pin is set to input mode and the pull-up
resistor is not connected.
-The drive strength of output Nch transistor can be
changed.
P61 SEG10/IRQ1B Yes
P62 SEG9/IRQ2B Yes
P63 SEG8/IRQ3B Yes
P64 SEG7/KEY4B/SBI0A/RXD0A Yes
P65 SEG6/KEY5B/SBO0A/TXD0A Yes
P66 SEG5/KEY6B/SBT0A Yes
P67 SEG4/KEY7B/SBCS0A Yes
P70 COM7/SEG3/IRQ6B
Input/
Output
Yes Port 7
-At each port, the I/O direction and the pull-up resistor
connection is controlled individually.
-At LSI reset, each pin is set to input mode and the pull-up
resistor is not connected.
-The drive strength of output Nch transistor can be
changed.
P71 COM6/SEG2/IRQ5B Yes
P72 COM5/SEG1/IRQ4B/TM3IOB Yes
P73 COM4/SEG0/TM5IOB Yes
P74 COM3 Yes
P75 COM2 Yes
P76 COM1 Yes
P77 COM0 Yes
P80 OSC1/IRQ2A
Input/
Output
No Port 8
-At each port, the I/O direction and the pull-up resistor
connection is controlled individually.
-At LSI reset, each pin is set to input mode and the pull-up
resistor is not connected.
P81 OSC2/IRQ3A No
P82 C1 No
P83 C2 No
P84 VLC3 No
P85 VLC2 No
Pin
name
Function
Input/
Output
Output
drive strength
selectable
Description