upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 35

• Manufacturer Part Number: upd78f0103
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

2.2.3 P20 to P23 (port 2)
(1) Port mode
(2) Control mode
2.2.4 P30 to P33 (port 3)
(1) Port mode
(2) Control mode
2.2.5 P120 (port 12)
(1) Port mode
P20 to P23 function as a 4-bit input-only port. These pins also function as pins for A/D converter analog input.
The following operation modes can be specified in 1-bit units.
P30 to P33 function as a 4-bit I/O port. These pins also function as pins for external interrupt request input.
The following operation modes can be specified in 1-bit units.
P120 functions as a 1-bit I/O port. This pin also functions as a pin for external interrupt request input.
The following operation modes can be specified.
(e) TxD0
(f) TI50
(g) TO50, TOH0, and TOH1
(h) INTP5
P20 to P23 function as a 4-bit input-only port.
P20 to P23 function as A/D converter analog input pins (ANI0 to ANI3). When using these pins as analog input
pins, see (5) ANI0/P20 to ANI3/P23 in 10.6 Cautions for A/D Converter.
P30 to P33 function as a 4-bit I/O port. P30 to P33 can be set to input or output in 1-bit units using port mode
register 3 (PM3). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 3 (PU3).
P30 to P33 function as external interrupt request input pins (INTP1 to INTP4) for which the valid edge (rising
edge, falling edge, or both rising and falling edges) can be specified.
P120 functions as a 1-bit I/O port. P120 can be set to input or output using port mode register 12 (PM12). Use of
an on-chip pull-up resistor can be specified by pull-up resistor option register 12 (PU12).
These are serial data output pins of the asynchronous serial interface.
Note TxD0 and RxD0 are available only in the
This is the pin for inputting an external count clock to 8-bit timer/event counter 50.
These are timer output pins.
This is an external interrupt request input pin for which the valid edge (rising edge, falling edge, or both rising
and falling edges) can be specified.
Note
, TxD6
CHAPTER 2 PIN FUNCTIONS
User’s Manual U15836EJ5V0UD
µ
PD780102, 780103, and 78F0103.
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