BAT32G1x9 user manual | Chapter 20 Serial interface IICA
754 / 1149
Rev.1.02
H
20.5.1
Start conditions
When the SCLAn pin is high, a start condition is generated if the SDAAn pin changes from high to low. The starting
conditions for the SCLAn pin and the SDAAn pin are the signals generated when the master device starts serially
transmitting to the slave. When used as a slave, the start condition is detected .
Figure 20-13
starting conditions
SCLAn
SDAAn
In the state where a stop condition (SPDn: bit0=1 of IICA status register n (IICSn)) is detected, if the IICA is
detected Bit1 (STTn) of the control register n0 (IICCTLn0) is set to "1" to start the output condition. If a start condition is
detected, set bit1 (STDn) of the IICSn register to "1".
Note: n=0,1