Renesas RL78/D1A User Manual

RL78/F13, F14 CHAPTER 4 PORT FUNCTIONS
R01UH0368EJ0210 Rev.2.10 298
Dec 10, 2015
4.2.13 Port 14
Port 14 is an I/O port with an output latch. Port 14 can be set to the input mode or output mode in 1-bit units using port
mode register 14 (PM14). When the P140 pin is used as an input port, use of an on-chip pull-up resistor can be specified
in 1-bit units by pull-up resistor option register 14 (PU14).
This port can also be used for clock/buzzer output.
Reset signal generation sets P140 to input mode.
Table 4-24. Settings of Registers When Using Port 14
Pin Name PM14x Alternate Function Setting Remark
Name I/O
P140 Input 1 
Output 0 PCLBUZ0 output = 0
Note
Note To use a pin multiplexed with the clock/buzzer output function as a general-purpose port, set the PCLOE0
bit in clock output select register 0 (CKS0) to the default value.
Remark : Don't care
PM14x: Port mode register 14

Renesas RL78/D1A Specifications

General

Brand	Renesas
Model	RL78/D1A
Category	Computer Hardware
Language	English