Yahoo Groups archive
Thread
2005-10-03 by markevans_1
Hi I have a LPC2138 soldered onto my own board. I have a USB-serial bridge IC attached to UART0. I am using a 12MHz crystal (I have also tryed 16MHz) I have no 32kHz crystal attached. Using Phillips flash utility I can read device ID: 196389, Boot loader ID: 2.0. I can successfully erase and blank check. However when I attempt to Upload Flash it fails mid way through the write. I have tryed using all the baud rates. Any ideas?
2005-10-03 by Dan Beadle
Take a look at the power supplies. I had a similar problem with the 2119 and traced it to needing a larger bypass cap on the VCC pin. Looking at the pin with a meter, everything was fine. I had to go to 100MHz view, AC coupled, then saw major spikes in power supply. The device "kind of worked" - I could do some JTAG, some ISP. Adding a 10uF chip cap at the regulator cleared it all up. _____
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com] On Behalf Of markevans_1 Sent: Monday, October 03, 2005 5:49 AM To: lpc2000@yahoogroups.com Subject: [lpc2000] Problems flashing LPC2138 Hi I have a LPC2138 soldered onto my own board. I have a USB-serial bridge IC attached to UART0. I am using a 12MHz crystal (I have also tryed 16MHz) I have no 32kHz crystal attached. Using Phillips flash utility I can read device ID: 196389, Boot loader ID: 2.0. I can successfully erase and blank check. However when I attempt to Upload Flash it fails mid way through the write. I have tryed using all the baud rates. Any ideas? SPONSORED LINKS Microprocessor <http://groups.yahoo.com/gads?t=ms&k=Microprocessor&w1=Microprocessor&w2 =Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s=9 3&.sig=tsVC-J9hJ5qyXg0WPR0l6g> Microcontrollers <http://groups.yahoo.com/gads?t=ms&k=Microcontrollers&w1=Microprocessor& w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s =93&.sig=DvJVNqC_pqRTm8Xq01nxwg> Pic microcontrollers <http://groups.yahoo.com/gads?t=ms&k=Pic+microcontrollers&w1=Microproces sor&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c =4&s=93&.sig=TpkoX4KofDJ7c6LyBvUqVQ> 8051 microprocessor <http://groups.yahoo.com/gads?t=ms&k=8051+microprocessor&w1=Microprocess or&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c= 4&s=93&.sig=1Ipf1Fjfbd_HVIlekkDP-A> _____ YAHOO! GROUPS LINKS * Visit your group "lpc2000 <http://groups.yahoo.com/group/lpc2000> " on the web. * To unsubscribe from this group, send an email to: lpc2000-unsubscribe@yahoogroups.com <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . _____ [Non-text portions of this message have been removed]