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Discussion Groups | LPC900 | Please help i am so messed up with icp-mcb900
Find help, specifications and source code for the LPC900. The LPC900 challenges Microchip and AVR based on the worlds most popular 8-bit architecture the 80C51. With a 2-clock core the LPC900 series is a high performance, very flexible and low cost 8-bit microcontroller family. Designers using or interested in these devices are encouraged to share their know-how and ask questions.
Please help i am so messed up with icp-mcb900 - ayberkbagci - Jun 30 20:06:00 2005
I can program my lpc936 when inserted on mcb900 also can program
lpc938 but i cannot program lpc922 with icp using the aplication note
circuit and isp-icp bridge code
it is almost 6 hours now what am i doing wrong i don't know but both
application notes have obvious faults in them
please help
tx
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Re: Please help i am so messed up with icp-mcb900 - b_siderius - Jul 29 12:18:00 2005
--- In lpc900_users@lpc9..., "ayberkbagci" <ayberkbagci@y...>
wrote:
>
> I can program my lpc936 when inserted on mcb900 also can program
> lpc938 but i cannot program lpc922 with icp using the aplication note
> circuit and isp-icp bridge code
>
> it is almost 6 hours now what am i doing wrong i don't know but both
> application notes have obvious faults in them
>
> please help
> tx
The ICP specifications should be in the files section. Check if the
reset and VDD match the ICP entry requirements.
It is possible that board capacitance can filter out either the reset
pulses or that VDD does not drop all the way to 0V before powering up
again and entering ICP mode.
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
wrote:
>
> I can program my lpc936 when inserted on mcb900 also can program
> lpc938 but i cannot program lpc922 with icp using the aplication note
> circuit and isp-icp bridge code
>
> it is almost 6 hours now what am i doing wrong i don't know but both
> application notes have obvious faults in them
>
> please help
> tx
The ICP specifications should be in the files section. Check if the
reset and VDD match the ICP entry requirements.
It is possible that board capacitance can filter out either the reset
pulses or that VDD does not drop all the way to 0V before powering up
again and entering ICP mode.
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )