CC430F5137 overheating problem

[moderboy 1]

Hy!

 

So I'm trying to program different higher series chips with my launchpad and I was succesfull with F2274, F5508 but no luck with CC430F5137...

 

Here's the problem: I connected Dvcc (there is 3 of it) and Dvss to the launchpad, RST and TEST. At first i started the debugging in CCS it recognized the chip then gave an error that it's cannot be written... when I unplugged it, it was damn hot :crazy:

I thought I did something wrong, short circuit or anything, replaced the chip and double checked my break-out-board.

 

Now with the new chip same problem, when I plugged it into the supply on LP it started to get hot, not tried to program this one, unplugged instantly.

 

Questions:

 

Do I have to apply voltage separately to VCORE? (datasheet says nothing about it, though 2274 said it's voltage output wich can't be loaded)

What did I did wrong?

[SugarAddict 227]

DO NOT apply voltage to VCore. You may or may not have fried stuff inside those two chips. Only apply voltage to pins 8, 22, 41, 45, ground the pad and pin 42.

[moderboy 1]

Only tried it with one chip, nothing happened just heating like without it... But Avcc and Avss is needed to programming be possible? :roll:

[moderboy 1]

Problem solved! The radio caused the overheating... Theres a pin called R_BIAS, which determines the output power of the RF module (as far as I understood the datasheet), but I cant managed to find a formula in the documents how is it calculated... But it seems like if its not "floating" everythings fine

 

So another chip on the list of which can be programmed with the LP 8-)