Reuven Kishon

Programming MCF52233 via the EZPort

Discussion created by Reuven Kishon on Feb 7, 2007
Latest reply on Jan 8, 2008 by JIM LAMBERSON
Hello everyone,

I had a question regarding programming the MCF52233 via the EZport. More specifically, about the RCON/EZPCS pin. Our target board has that pin tied high through a 4.7K resistor. After reading through Chapter 21 of the MCF52233 Reference Manual I was confused about how that pin needs to be treated. Here is what I gather:

- The RCON/EZPCS pin should be low when coming out of reset so that you enter the programming mode.
- Once in the programming mode, the next time this pin goes low it will signal the first SPI transfer.

If this is true, that means that whatever I use to program the device via the EZport will need to make sure that the RCON/EZPCS pin is low when the target board is powered up.

Does this all sound correct? Or am I missing something?

Thanks in advance,