Dear Rahul,  This is th eproblem of Power On Reset if your Vdd will not drop below 0.2V and again Mains power will on .. then your Vdd cycle is not proper...
Hi Nilesh, Thanks for your reply.... 1) I m using the SMPS power supply, so how can i drop my VDD immediately? 2) I have tested the setup for minimun 30 sec...
rahul shinde
rahul.shinde@...
Aug 1, 2008 10:25 am
525
Dear Rahul, Â YOu can check the with Battery of 3.3V.. and check is your system hangs or not. Â Second : you can use P89LPC952 or P89LPC954 which is not...
Hi Nilesh, 1) I m Using SMPS with 12V,1A current rating for my application so it is not possible me to test the system on Battery. 2) I have tested the system...
rahul shinde
rahul.shinde@...
Aug 1, 2008 10:50 am
527
Use CAP Free LDO... in Power Supply... And if your controller will not start all port may be high around 3.4 or 4.5V but behaviour may be erratic... Â ...
How about using the MCP809 three terminal processor reset chip. It holds the system in reset until the power supply reaches 2.9 volts on a 3.3 volt system....
You do not seem to understand what I am talking about. I am not talking about a LDO or any regulator. The MCP809 is a uP reset device that keeps the uP in...
Hi Nilesh, I will surly look into this......thats better..... Regards Rahul Shinde ... From: Nilesh To: lpc900_users@yahoogroups.com Sent: Saturday, August 02,...
rahul shinde
rahul.shinde@...
Aug 2, 2008 3:25 am
532
Hi 1)Yes i think it is good to use the power on reset IC .......... 2)but LPC936 is having inbuild power on reset circuitry so is it different than the...
rahul shinde
rahul.shinde@...
Aug 2, 2008 3:28 am
533
Hi Nilesh, 1) Is there any IC which gives me 0V output when my voltage is in the range 2.4V-0.2V and gives 3.3V when my voltage is above 2.4V. Regards Rahul...
rahul shinde
rahul.shinde@...
Aug 2, 2008 4:04 am
534
I have to check .. For any other support on NXP we will Provide support for Programming tools as well as Developement tools... Â Nilesh(9925049517) Potent...
Hi Nilesh, 1) I m using the external RC circuit to reset the LPC936. 2) but my processor always start with power on reset first time. 3) when i m giving the...
rahul shinde
rahul.shinde@...
Aug 4, 2008 10:10 am
536
Dear All,   We are growing, shows our clients are. Getting a good feedback from our customers, spreaded all over INDIA, we are thankful to you, who have...
New guy looking for some help..... I have a couple of the mcb900's of different revs. The original disc only has the datasheets and the current revision of...
Hi, I'm sort of new at the LPC micros, but have some code apparently compiled with the Keil compiler for a lPC938. I've got everything compiling fine, except...
Dear Ryan, Are you able to write the code in a simple way ???? like unsigned char buf; buf = AD0DAT0; and see what you get in the buf ... -- Doshi Harshal ...
Hi, I can't seem to use the INT0 or INT1 on LPC932A1. This is what I observe: Using INT1: 1. setup INT1 (P1.4) as input (P1M1.4=1,P1M2.4=0)and set it to HI. 2....
hi, 1) have you clear the interrupt flag in the INT1 isr routine? regards rahul shinde ... From: vicdlr1 To: lpc900_users@yahoogroups.com Sent: Friday,...
rahul shinde
rahul.shinde@...
Nov 7, 2008 4:26 am
543
Yes, clearing IE1 does not make any difference....
hi, can you send me your code...... regards rahul shinde ... From: vicdlr1 To: lpc900_users@yahoogroups.com Sent: Friday, November 07, 2008 10:00 AM Subject:...
rahul shinde
rahul.shinde@...
Nov 7, 2008 4:35 am
545
It seems you are power up the board by power supply and not battery. OKK Pull down the pin with 10k. and your problem will solve. which IDE are you using ?? ...
Nope, as I've said pulling up/down P1.4 doesn't make any difference, I'm using Keil Uv2 IDE. Do you have a short sample code that uses INT1 or INT1 that works...
Rahul, Attached is a cleaner source tahn the one I sent you yesturday.. Please see if you can spot where I did wrong and have it run on your hardware. The...
Harshai, Attached is my sample code. Please see if you can spot where I did wrong and have it run on your hardware. The _Alive_ routine will toggle P2.5 on...
hi, i have gone through your code .... it is working in a simulator in a keil...so code is okay..... what circuit you added at the int1 port pin pi.4 and how...
rahul shinde
rahul.shinde@...
Nov 10, 2008 4:15 am
551
Rahul, I have started with P1.4 left open, then I pulled it high with a 10K resistor. Then I inject a 1khz 5VDC signal or also tried just pulling it down using...
Its a stable part and there is letter option for any bug. I suggest you to try with fresh chip. ... -- Doshi Harshal POTENT F-27, VRAJWADI COMPLEX, Nr. UTKARSH...
Rahul, You're right, it a defective LPC932A1 with other features ok but not INT0 nor INT1. Thanks, Vic ... logic low ... when It1=1. ... LPC932A1.I ... giving...
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