Datasheet

78K0/Ix2 CHAPTER 15 SERIAL INTERFACE IICA
R01UH0010EJ0500 Rev.5.00 497
Feb 28, 2012
15.5.5 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 15-20. Stop Condition
SCLA0
SDAA0
H
A stop condition is generated when bit 0 (SPT0) of the IICA control register 0 (IICACTL0) is set to 1. When the stop
condition is detected, bit 0 (SPD0) of the IICA status register 0 (IICAS0) is set to 1 and INTIICA0 is generated when bit 4
(SPIE0) of the IICACTL0 register is set to 1.