Author Topic: P89LPC936 ICP with MCB900  (Read 6848 times)

Jan

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P89LPC936 ICP with MCB900
« on: December 01, 2004, 03:33:27 pm »
Hello, is there anyone out there, who could help me to program the 936 with the eval board MCB900 from Keil.

I set up the modification on the board, described in AN10258 from philips.
I think the pnp-transistor doesn't work in this way, if you installed the recommended ISP-ICP Bridge, because the level of P2.3 will be high and so no voltage is supplied to the processor, while programming. Am I wright?

So I inverted the signal with no positive effect.
As the other signals appear at the processors pins (P0.4, P0.5, P1.5, Vdd) I think that the malfunction of programming is related to the timing of the signals. Have anyone information about that timing?

Thanx,
Jan

Andy Ayre

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Re: P89LPC936 ICP with MCB900
« Reply #1 on: December 01, 2004, 03:41:55 pm »
I'm not sure which version of that application note you are following but the diagram in version 1 is incorrect w.r.t the transistor. You can find version 2 on the Flash Magic home page towards the bottom.

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Jan

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Re: P89LPC936 ICP with MCB900
« Reply #2 on: December 01, 2004, 04:17:51 pm »
O.k. (I got the paper version 1), but I said it before, that this is not the real problem . I need information about the timing, because I program the Tssop28 processor indirectly in an application with propagation delays.

Jan

Andy Ayre

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Re: P89LPC936 ICP with MCB900
« Reply #3 on: December 01, 2004, 04:20:41 pm »
If you are following revision 1 of AN10258 then that is a problem, because the circuit diagram is incorrect. The transistor is wrong and there is a pin connection wrong.

I don't have information on ICP signals and their timing. Maybe try asking Philips?

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Jan

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Re: P89LPC936 ICP with MCB900
« Reply #4 on: December 01, 2004, 04:34:51 pm »
Can you tell me, where I can get the source code of the ISP-ICP bridge, in order to change some timings?

Jan

Andy Ayre

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Re: P89LPC936 ICP with MCB900
« Reply #5 on: December 01, 2004, 04:36:25 pm »
There is the source code of an old version (1.2) somewhere on line, but I don't know if the source code is available for the current version. Maybe Philips will give it to you.

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