8-bit Microcontrollers中的主题 Re: MC8S08SH8 buy guide (DIP socket??)

MC8S08SH8 buy guide (DIP socket??)

pathik — Tue, 03 May 2011 13:27:09 GMT

I want to buy MC8S08SH8 development board from freescale.

this is web link http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=DEMO9S08SH

I am try to find if the 20pin DIP microcontroller is in socket or it is soldered on board??

Because I m planning to use same kit (development board) to programm number of controllers.

If anyone have already purchse or if they have idea about kit.

Thank you

Pathik

Re: MC8S08SH8 buy guide (DIP socket??)

bigmac — Tue, 03 May 2011 15:16:17 GMT

Hello Pathik, and welcome to the forum.

It the photograph shown in the link is currently accurate, it would appear that the MCU is in a SOIC package which is directly soldered to the board.

However, the demo board also provides an empty footprint for a 6-pin BDM header, usually available for programming an external board. For this reason, I suspect it would be feasible to isolate the BDM connection from the on-board device. You will need to download the schematic for the demo board to verify this aspect.

Regards,

Mac

Re: MC8S08SH8 buy guide (DIP socket??)

rocco — Wed, 04 May 2011 04:28:23 GMT

Hi Pathik and Mac,

That page is selling two different boards, but only shows the picture for the 28TSSOP board (SH32). I can't seem to find a picture of the 20PDIP board (SH8).

But looking at the manual here:

http://cache.freescale.com/files/microcontrollers/doc/user_guide/DEMO9S08SH8UG.pdf?fpsp=1

I suspect it does have a socket. Although it does not state either way (lame), my suspicion is based on the drawing on page 5. First, the silkscreen looks like a socket, and second, the reference designator is "SU1" whereas an unsocketed part would normally be "U1".

In any case, you could always replace the chip with a socket. I would go for a ZIF socket if you intend to use it for programming.

I could be wrong, I often am, but I never admit it.

Re: MC8S08SH8 buy guide (DIP socket??)

RogerSchaefer — Tue, 27 Sep 2011 02:36:08 GMT

You may want to take a look at my MC9S08SH8 project board.

http://www.rasmicro.com/SH8_Board.htm

Roger