Re: High Temp application
2005-02-10 by Rick Collins
... around ... Don t know, but ADI makes similar chips that are rated to 125C. I expect that might be a better starting point. I got pricing on the ADuC7024
Messages
Browse messages
Page 218 of 329 · 16407 messages matched
Re: Subject: Last post on VSS and VDD lines please
2005-02-10 by Rick Collins
... I was probably being a little sensitive myself, but I didn t appreciate his comment, Don t be a snob. in reply to my post. I think the issue came from
High Temp application
2005-02-10 by fl429
Hi, Folks, Has anyone tried these chips in a very high temp environment, around 150C, typical downhole in the gas and oil industry ? How do they fare ? Thanks
Interruot response time from idle mode
2005-02-10 by Michael J. Pont
I m trying to work out some interrupt response times for the LPC2000 family. My main concern is with the response to timer interrupts. I can work out exactly
LPC2212 EINT0 & EINT2 problems
2005-02-10 by emilpetrov
Hello! I have faced strange phenomemon when trying to use theese two external interrupt lines. I have connected dual uart 16C572 to the external bus and routed
Trouble with IAP and Thumb-Interworking
2005-02-10 by firegenie1980
Hi, I have been trying to get some IAP commands working with a program I am developing. I have got the IRQ disable/enable commands working fine, well the
Re: cant seem to use external sdram on phytec 2294
2005-02-10 by didier_edna
Hello, No problems, so far... After installing the necesary drivers from the macraigor site, programming the chameleon with the programmer from the amontec
Re: External ADC Problem
2005-02-10 by Leighton Rowe
... your A/D converter? SAR Sigma Delta? and who is manufucter of that ADC. ... - Made by Analog (AD7666) - 16-bit Unipolar - buffer on the input, - External
Re: Flash problem
2005-02-10 by mobilsiten
Ah, finally its solved. Thanks for all the help!
Re: [lpc2000] External ADC Problem
2005-02-10 by Gorazd Grkman
Many reasons could be for that, first let me know witch type is your A/D converter? SAR Sigma Delta? and who is manufucter of that ADC. do you have buffered
Re: External Counter Mode in LPC2130 series, Yes!
2005-02-10 by varuzhandanielyan
Just to note. I have an impression, that 90% of this forum problems are caused by bad documentation of the LPC2000 (though the parts are nice). It seems, that
Re: [lpc2000] Re: Subject: Last post on VSS and VDD lines please
2005-02-10 by Peter Jakacki
... This is a public forum and the discussions end up benefiting others. There is no ownership of a thread, is there?. This is the first time I can remember
Re: Subject: Last post on VSS and VDD lines please
2005-02-10 by lpc2100_fan
Rick, Owen started the Thread I think he and only he has the right to set an end to it. He accepted the help and now he is saying, it s OK. What about that is
Re: Subject: Last post on VSS and VDD lines please
2005-02-10 by Rick Collins
... lines connected and 1 cap under the chip with short lines to VSS and VDD lines + a 10uf elsewhere. ... have dozens of them running in the field. ... caps?
Subject: Last post on VSS and VDD lines please
2005-02-10 by Owen Mooney
Enough responses thankyou !!! I don t need any more help thank - I finished it last night with all lines connected and 1 cap under the chip with short lines to
External Counter Mode in LPC2130 series, Yes!
2005-02-09 by lpc2100_fan
Hi, just discovered something in the Users Manual of the LPC2138. Several months ago there was a questions how to count external events with a LPC2106, to my
Re: Flash problem
2005-02-09 by mobilsiten
... source is a pointer to a char array with the data i want to write to the flash in this case the famous Hello world :-)
Re: CAN timing again
2005-02-09 by jamesasteres
... interacts ... of ... understood. ... part ... seg ... Great! Thanks for that clarification. James
Re: VSS and VDD lines // EMC
2005-02-09 by lpc2100_fan
Tim, my experience with CPUs as major cause for trouble in EMC testing seems a little different. Fortunately the LPC2000 devices have a slew rate of 10 ns,
Re: [lpc2000] External ADC Problem
2005-02-09 by Jan Weber
This seems to be a power supply decoupling problem because the ADC seems to draw more current during the conversion process. Did you follow the basic rules for
Re: Flash problem
2005-02-09 by Leighton Rowe
... in (CCLK) KHz It looks like everything but the write command is ok. Just for clarity, what you re using for the variable source ?
Re: Flash problem
2005-02-09 by mobilsiten
Sorry, still dosent work I directly get the error code SRC_ADDR_NOT_MAPPED I dont dissable the interrupts (because I have not manage to solve this eighter...)
Re: Flash problem
2005-02-09 by Leighton Rowe
I forgot to mention that IAP commands may take a while to complete. From the below code example (IAR), I think you ll have to continually call the IAP and
Re: Flash problem
2005-02-09 by mobilsiten
Now I have changed the code to this: IAP iap_entry; iap_entry = (IAP) IAP_LOCATION; //Prepare sector command[0] = 50; // Command command[1] = 7; // Start
Re: VSS and VDD lines
2005-02-09 by tlarson_greatnotions
Jan, In our case, using a LPC2214 and a two layer board. We had no problems with compliance testing. In fact our very first board using this part, passed with
External ADC Problem
2005-02-09 by Leighton Rowe
I need a little advice with using external ADC s with lpc processors. Apparently, the reference, analog ground, and input signals looks somewhat distorted
Re: Flash problem
2005-02-09 by Leighton Rowe
... You re overwriting the PC (program counter) which is one of the scariest things u can do. Usually this results in prefetch aborts. You can to branch to the
Re: Flash problem
2005-02-09 by mobilsiten
Ok, thanks this solved the problem. Still I would like to know how this could totally messup the CPU.... Can someone tell me?? Peter
Re: VSS and VDD lines
2005-02-09 by Jan Szymanski
Is this a serious design or just to play with the chip ? If it is for playing than it is cheaper to buy an eval board (see Olimex) If it is serious, with 2
Re: Flash problem
2005-02-09 by mobilsiten
This is the iap function: void iap (unsigned *cmd,unsigned *rslt,unsigned entry) { asm( mov r15,r2 ); } Its taken from Keils exercises Peter
Re: VSS and VDD lines
2005-02-09 by Rick Collins
... hardware... ... least 3 under the chip. I m not trying to put anyone down, but software people normally need to learn a lot before attempting
Re: Disabling interrupts from Thumb mode
2005-02-09 by Richard
Thank you Charles, it is hard to find any practical information on the different modes. Right now I am running in Supervisor mode but I think I will switch
Re: [lpc2000] Re: Disabling interrupts from Thumb mode
2005-02-09 by Charles Manning
... There are 7 different modes, each has different uses: SVC: Supervisor mode. CPU boots in this mode. Also used for software interrupts. User mode: A safe
Re: VSS and VDD lines
2005-02-09 by Owen Mooney
Thanks for the replies on this. I m a software engineer learning hardware... But the suggestion: On the chip side, fan out all the traces at least 1 cm away
Code Loader Functional
2005-02-09 by Richard
I have solved my myriad of issues and filled in enough of my own ignorance to get this thing working. I have the code located in lower sectors of flash with a
Re: [lpc2000] Re: VSS and VDD lines
2005-02-08 by Robert Wood
If you re struggling for space, why not use 0603 or smaller caps? ... Owen, if anything the LPC2000 devices do not have enough VDD/VSS pairs. If you do not
Re: VSS and VDD lines
2005-02-08 by tonalbuilder2002
A quad package on a 2 layer board is one of the more annoying layout problems, except just be glad you re not dealing with a BGA. On the chip side, fan out all
Re: VSS and VDD lines
2005-02-08 by lpc2100_fan
Owen, if anything the LPC2000 devices do not have enough VDD/VSS pairs. If you do not connect them all the chip MIGHT still run but usually the pairs are
Re: [lpc2000] VSS and VDD lines
2005-02-08 by Leon Heller
... From: Owen Mooney To: Sent: Tuesday, February 08, 2005 8:59 PM Subject: [lpc2000] VSS and VDD lines ... I
Re: [lpc2000] VSS and VDD lines
2005-02-08 by Robert Adsett
... I haven t seen any indication otherwise. ... So many? I only counted 4 (well 3 1/2) sets (one per side for the 2106). Robert Freedom has no meaning of
VSS and VDD lines
2005-02-08 by Owen Mooney
I hope this question is not too ignorant! Is it necessary to link to all the VSS and VDD lines in the chip? I m working on a tight 2 layer layout. Why are
Re: Flash problem
2005-02-08 by Leighton Rowe
... I d really like to see how u defined your iap function pointer. Regardless, ensure that the IAP function pointer switches to thumb mode and takes only 2
Re: Disabling interrupts from Thumb mode
2005-02-08 by Richard
Thank you Charles. My problem was that I was operating in user mode where one may not modify the control bits in the CPSR. This was using the standard issue
Re: Flash problem
2005-02-08 by Gus
hold the BL pin then try to connect using philips utility over the serial port. If you can t chip is useless. Gus ... directly ... erase ... 0x00
Re: [lpc2000] Re: decent reset device
2005-02-08 by Robert Adsett
... If it s that high I don t worry. I just want to keep the input below 1/2 a volt or so (at 10K that s 50uA, sounds doable). A good deal of my hesitance is
Flash problem
2005-02-08 by mobilsiten
Hi! I m pretty new on this and I think i screwed it up really good directly I made this code and tried it: void writeToFlash() { command[0] = 54;
Re: olimex LPC-E2294 with ethernet
2005-02-08 by tsvetanusunov
... read from, write ... the same by ... to IOW. not really, according to CS8900A datasheets CHIPSELECT is used only in Memory mode, in IO and DMA mode
Re: olimex LPC-E2294 with ethernet
2005-02-08 by tsvetanusunov
... LPC- ... Hi Gus, Sorry for the late reply, but I have full time job also :) The CS8900A is connected correctly, so you don t have to swap R56 and R57,
RE: [lpc2000] Re: olimex LPC-E2294 with ethernet
2005-02-08 by Paul Curtis
Gus, Checking the LPC-SBC2 and talking to Bill Knight confirms that this board is ready to rock when it comes to Ethernet in 16 bit mode (and interrupt driven
RE: [lpc2000] Re: olimex LPC-E2294 with ethernet
2005-02-08 by Paul Curtis
Gus, I fear you may be 100% correct. SBHE is held high, sigh. I think you re buggered for 16-bit mode, mate. Perhaps Olimex didn t test the Ethernet