Dawei You

56F8257 I2C slave timming restriction

Discussion created by Dawei You Employee on Nov 22, 2017



I want to ask question for 56F8257 I2C working as slave,


1.from the DS, the I2C only support up to 100Kbit frequency, does it also available for I2C slave mode?


2.The Processor Experter  tool could set I2C peripherals faster than 100KHz, is it wrong?

I2Cx_FREQDIV  doesn't wrote any restriction for SCL frequency.


3.if i2c work under slave mode, if the master driver SCL frequency fast than 100K, could any abnormal signal be possible? please help check below snapshot for I2C wave working under 250KHz as slave.