Pin Function; Port Pins - NEC uPD78F4225Y Manual

4. PIN FUNCTION

4.1 Port Pins (1/2)

Pin Name I/O
P00 I/O INTP0
P01 INTP1
P02 INTP2/NMI
P03 INTP3
P04 INTP4
P05 INTP5
P10-P17 Input ANI0-ANI7
P20 I/O RxD1/SI1
P21 TxD1/SO1
P22 ASCK1/SCK1
P23 PCL
P24 BUZ
P25 SI0/SDA0
P26 SO0
P27 SCK0/SCL0
P30 I/O TO0
P31 TO1
P32 TO2
P33 TI1
P34 TI2
P35 TI00
P36 TI01
P37 EXA
P40-P47 I/O AD0-AD7
P50-P57 I/O A8-A15
Alternate Function
Port 0 (P0):
• 6-bit I/O port
• Can be set in input or output mode bit-wise.
• Pins set in input mode can be connected to internal pull-up
resistors by software bit-wise.
Port 1 (P1):
• 8-bit input port
Port 2 (P2):
• 8-bit I/O port
• Can be set in input or output mode bit-wise.
• Pins set in input mode can be connected to internal pull-up
resistors by software bit-wise.
Port 3 (P3):
• 8-bit I/O port
• Can be set in input or output mode bit-wise.
• Pins set in input mode can be connected to internal pull-up
resistors by software bit-wise.
Port 4 (P4):
• 8-bit I/O port
• Can be set in input or output mode bit-wise.
• All pins set in input mode can be connected to internal pull-up
resistors by software.
• Can drive LEDs.
Port 5 (P5):
• 8-bit I/O port
• Can be set in input or output mode bit-wise.
• All pins set in input mode can be connected to internal pull-up
resistors by software.
• Can drive LEDs.
µ PD78F4225Y
Function
9