How can I reply to an answer of my question ?

mslab · ‎2006-03-08

Posted on March 09, 2006 at 06:45

mslab · ‎2006-03-08

Posted on March 09, 2006 at 06:10

I've tried to reply to the moderator but I cannot see my reply!

SO I reply with this new message :

Hello,

Thanks to the answer.

Our design uses 2 ST7 on the same PCB.

ST7 #1: All PB pins are connected to 74HCT541 inputs, PA pins are connected to 80C188 processor which manages I2C master except PA7 which is not connected.

I know, it is normally not recommended to left pin un-connected!

ST7 #2: PB0 is used to drive a PNP transistor, PB1..PB7 are not connected.

PA pins are connected to 80C188 processor which manages I2C master except PA7 which is not connected.

For each ST7, #1 and #2 :

PA0 (ICCCLK) and PA4 (SCL) are connected together, PA1 (ICCDATA) and PA6 (SDA) are connected together. SCL and SDA are connected to 80C188 (I2C master).

So our design can use ICC to program ST7s, in this case a jumper is use to drive ICCSEL,

or we can use I2C bus+IAP.

AT this time, we never use LVD Reset. It is always program to OFF in option bytes.

Maybe, we need to set LVD to medium or Low to avoid our problem of corrupted memory code bytes?

Regards

B.PICARD

laurent239955_stm1 · ‎2006-03-08

Posted on March 09, 2006 at 06:45

Hi,

It seems you successfully reply to my answer. So, you only need to be patient, it needs few seconds or minutes to update the forum, this depends on the network load I guess !

I will reply in the initial discussion

BR

Laurent