Who can do me a favour about MC68332!!please!!!!

[prison_break]

When I read the system integration module reference manual and one sentence I can't understand. It is "The state of the clock mode (MODCLK) pin during reset determines which clock
source the MCU uses. When MODCLK is held high during reset, the clock signal is
generated from a reference frequency. When MODCLK is held low during reset, the
clock synthesizer is disabled, and an external system clock signal must be applied."

So my question is how do I make MODCLK high or low during reset, is that connect a resistor between VDD and MODCLK pin?

[Nouchi]

Hello,


You just have to pull up or pull down with a 10k resistor (might be enough). You just have to take care of what you want to do with PF0 (shared pin with MODCLK).


Emmanuel

[prison_break]

thnak you so much!BugMan!! I am a chinese student, and I am learning MC68332.

GOOD LUCK FOR YOU!!!

[Nouchi]

Hello,

MC68332 is a little bit outdated. If you can, you'd rather learn MCF523x family, which is the ColdFire family replacement. It include a new eTPU unit with a lots improvements (TPU probably made the 68332 success).

Regards,
Emmanuel

[prison_break]

Hello

I have heard about the coldfire, i am a beginner and we do not have a emluator and others useful books, I only down some user's manual, so study MC68332 maybe easier than coldfire. For anther reason that is my tutor's idea.

think you again!!!

best wishes to you!!!