I have these boards: KTMPC5744DBUG, KT33908MBUG. and i would like the digital pins to be at 5V level, not 3.3V. But when i make Vcca = 5V and use it as the supply of the digital pins i get an error from the secondary board and nothing works. Is there an option where i could have 5V digital pins?
Hi,
The MPC5744P does not allow I/O pins be supplied by 5V, only ADC reference can be supplied by 5V.
The possible board power supply setting scenarios are given in chapter 3.5.1 Power Supplies of the board user guide
http://cache.freescale.com/files/analog/doc/user_guide/KTMPC5744DBUG.pdf.
BR, Petr