Port 3 - NEC V850ES/SA2 UPD703201 Manual

4.3.3

Port 3

Port 3 can be set to the input or output mode in 1-bit units.
The number of I/O port bits of each product is the same.
Commercial Name
V850ES/SA2
V850ES/SA3
(1) Functions of port 3
Input/output data can be specified in 1-bit units by using port register 3 (P3).
Can be set to the input or output mode in 1-bit units by using port mode register 3 (PM3).
Can be set to the port mode or control mode (alternate function) in 1-bit units by using port mode control
register 3 (PMC3).
Control mode 1 or control mode 2 can be specified in 1-bit units by using port function control register 3
(PFC3).
N-ch open-drain output can be set in 1-bit units by using port function register 3 (PF3).
An internal pull-up resistor can be connected in 1-bit units by using pull-up resistor option register 3 (PU3).
Port 3 has an alternate function as the following pins.
Pin Name
Port 3 P30
P31
P32
Note Software pull-up function
CHAPTER 4 PORT FUNCTIONS
3-bit I/O port
3-bit I/O port
Table 4-6. Alternate-Function Pins of Port 3
Alternate-Function Pin I/O
SI1/RXD0 I/O
SO1/TXD0
SCK0
Preliminary User's Manual U15905EJ1V0UD
Number of I/O Port Bits
Note
PULL
Provided
N-ch open-drain output selectable
Remark
−
111