Datasheet

RL78/L12 CHAPTER 13 SERIAL INTERFACE IICA
R01UH0330EJ0200 Rev.2.00 542
Dec 13, 2013
13.5.5 Stop condition
When the SCLA0 pin is at high level, changing the SDAA0 pin from low level to high level generates a stop condition.
A stop condition is a signal that the master device generates to the slave device when serial transfer has been
completed. When the device is used as a slave, stop conditions can be detected.
Figure 13-19. Stop Condition
SCLA0
SDAA0
H
A stop condition is generated when bit 0 (SPT0) of IICA control register 00 (IICCTL00) is set to 1. When the stop
condition is detected, bit 0 (SPD0) of the IICA status register 0 (IICS0) is set to 1 and INTIICA0 is generated when bit 4
(SPIE0) of the IICCTL00 register is set to 1.