Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 13 SERIAL INTERFACE IICA
R01UH0959EJ0110 Rev.1.10 Page 528 of 765
Mar 7, 2023
13.4 I
2
C Bus Mode Functions
13.4.1 Pin configuration
The serial clock pin (SCLA0) and the serial data bus pin (SDAA0) are configured as follows.
(1) SCLA0
This pin is used for serial clock input and output.
This pin is an N-ch open-drain output for both master and slave. Input is Schmitt input.
(2) SDAA0
This pin is used for serial data input and output.
This pin is an N-ch open-drain output for both master and slave. Input is Schmitt input.
Since outputs from the serial clock line and the serial data bus line are N-ch open-drain outputs, an external pull-up
resistor is required.
Figure 13-12. Pin Configuration Diagram
Master device
Clock output
(Clock input)
Data output
Data input
V
SS
SCLA0
SDAA0
V
DD
(Clock output)
Clock input
Data output
Data input
V
SS
V
SS
Slave device
SCLA0
SDAA0
V
SS
V
DD

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English