Daniel Vaquerizo

SCL I2C Frequency with MPC8569 in security full rate mode

Discussion created by Daniel Vaquerizo on Feb 25, 2020
Latest reply on Feb 27, 2020 by Daniel Vaquerizo

Hi all;


I am ussing a MPC8659 microcontroller with a 400MHz platform clock (CCB). I am trying to obtain 100KHz in I2C2 SCL apliying FDR=0X2F (2048) in I2CFDR (400MHz/2/2048 = 97656Hz) yet the SCL line have 190KHz. I am ussing security full rate mode yet I can read in MCP8569ERM.pdf that it doesn't affect in I2C2.


Can you help me please? Does anyone know hot to do it right?


Best regards. Daniel.