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Flash Utility ISP on LPC2138

Started by radim100 September 24, 2005
Hi I have a board with LPC2132 MCU . ISP Version 2.2.2. works fine
at all speeds . When I switch on the same board to LPC2138 ( same
crystal 14.7456MHz , same board ) I am having download file problems .
Switching back and to LPC2132 works fine . After putting LPC2138 (
different piece of chip ) on again it has similar download problems (
even at slow speed like 9600,4800 ) . Only difference I can see is
Bootloader ID . Which is on LPC2132 2.0 and on LPC2138 2.11 .
IS this problem in Flash Utility or in LPC2138 ?
Thanks for suggestions.
Radim


An Engineer's Guide to the LPC2100 Series

--- In lpc2000@lpc2..., "radim100" <radim100@y...> wrote:
> Hi I have a board with LPC2132 MCU . ISP Version 2.2.2. works fine
> at all speeds . When I switch on the same board to LPC2138 ( same
> crystal 14.7456MHz , same board ) I am having download file
problems .
> Switching back and to LPC2132 works fine . After putting LPC2138 (
> different piece of chip ) on again it has similar download
problems (
> even at slow speed like 9600,4800 ) . Only difference I can see is
> Bootloader ID . Which is on LPC2132 2.0 and on LPC2138 2.11 .
> IS this problem in Flash Utility or in LPC2138 ?
> Thanks for suggestions.
> Radim

I think I have found problem . It is ST Microelectronics's ST3232EBD
replacement for MAX3232. Due to shortage of MAX3232 from TI I have
replaced this chip with ST Micro chip. It run OK if board was
programmed from JTAG and then RS232 port was used to communicat .
But ISP ( Phillips and LPC21ISP were crashing ) . After replacing
ST3232EBD to original MAX3232 all is OK again ( wasted 3 days !!!).
Radim.


I had the same problem with the ST parts on an eval board.

Rich

--- In lpc2000@lpc2..., "radim100" <radim100@y...> wrote:
> --- In lpc2000@lpc2..., "radim100" <radim100@y...> wrote:
> > Hi I have a board with LPC2132 MCU . ISP Version 2.2.2. works fine
> > at all speeds . When I switch on the same board to LPC2138 ( same
> > crystal 14.7456MHz , same board ) I am having download file
> problems .
> > Switching back and to LPC2132 works fine . After putting LPC2138 (
> > different piece of chip ) on again it has similar download
> problems (
> > even at slow speed like 9600,4800 ) . Only difference I can see is
> > Bootloader ID . Which is on LPC2132 2.0 and on LPC2138 2.11 .
> > IS this problem in Flash Utility or in LPC2138 ?
> > Thanks for suggestions.
> > Radim
>
> I think I have found problem . It is ST Microelectronics's ST3232EBD
> replacement for MAX3232. Due to shortage of MAX3232 from TI I have
> replaced this chip with ST Micro chip. It run OK if board was
> programmed from JTAG and then RS232 port was used to communicat .
> But ISP ( Phillips and LPC21ISP were crashing ) . After replacing
> ST3232EBD to original MAX3232 all is OK again ( wasted 3 days !!!).
> Radim.