MCP39F511 CT Sensor Interfacing (Khairyassar)
Dear Eng. DarioG:have a nice day,i need your support,I need to work with ADE7758, I think you have a lot of information about it,can you please help me to calibrate it,Khairykhairy20@yahoo.com..
View ArticleRegister Write N-Bytes Command example incorrect in MCP39F521 datasheet?...
MCP39F521 datasheet, page 19 gives the following command example: TABLE 4-3:REGISTER WRITE, N- BYTES COMMAND (Note 1)Byte # Value Byte Description Response from MCP39F5211 0xA5 Header Byte2 0x25 Number...
View ArticleMCP1703 exhibits excessive noise ~4mV RMS (RedfishInst)
Hello,We're using a MCP1703 to drop 9 volts to 3.3 volts. We're seeing excessive noise (~4mV RMS) on the output as shown in the attached scope trace. I've attached the schematic for reference. Please...
View ArticleMCP1702 losing it at ~100mA??? (proc_rock)
Hi, could someone point me to more details about a bad batch of MCP 1702 3.3v? I came across the problem as described and after replacing the regulator with one from another batch, now works fine. But,...
View ArticleHelp Calibrating MCP39F521 (sridhar_rajagopal)
Hi, I have a custom board with the MCP39F521, and it mirrors the MCP39F521 Demonstration Board architecture. I'm trying to calibrate the chip based on the instructions in the datasheet - 1. Temperature...
View Article+-10 volts range form MCP3913 (avais20)
Hi,I have to make a 16bit 15KSPS datalogger. I am planning to use MCP3913. But it doesnot seem to have internal features to cover the full analog input range of +-10volts. What will be the best way to...
View ArticleMCP4011 DigiPot output terminals not referenced to IC VSS (tmabc)
Hello!I'm using a MCP4011 - volatile digital potentiometer - with 50k.The IC is powered by 5V but the output terminals (B and W) are connected to an external board that is isolated from the 5V (or at...
View ArticleMCP39F5xx current sensing (etillol)
Hello, I am using a MCP39F521 on a DC application (battery charger).I tried using a LMP8481 as a high side current shunt amplifier (with positive only voltag output) to feed the I+ and I- input pins of...
View ArticleMonitor cable interface (RITESH)
Hello,How monitor interface work with embedded system to vga plug ?..
View ArticleUSB3300 ULPI board clock problem (lafe8)
hi! I'm new in the forum and need help!I recently bought a USB3300 ULPI board (http://www.waveshare.com/usb3300-usb-hs-board.htm )I try to find out if it works properly and I use an oscilloscope to...
View ArticleQuestion about MCP1703 quiescent current (mostafanfs)
MCP250xx devices: http://www.microchip.com/forums/fb.ashx?m=963222..
View ArticleMCP2221 GPIO access / write under linux. (decostern)
Hello, I'm doing some elementary tests with the MCP2221 (USB/UART-I²C-GP-ADC-DAC) interface. While it was indeed very easy to use the UART, I can't figure out how to write value on GP(I/O) pins under...
View ArticleTC4427 Dying (crosland)
I have a circuit that boils down to a PIC, powered from 3.3V driving the 4427 input. The 4427 is powered from a separate, isolated supply with a common 0V between the two supplies.I have had a number...
View ArticleLcd and noise (Jonisingt35r)
helloim trying to use a 4 line lcd in a noisy invioment, around a frequency inverter, is there anything i could do to tyr to munimise noise getting into the lcd im using a low frequency filter for the...
View ArticleTen years! (DarioG)
It's been 10 years today, since I joined the forum! 10 years and ~50000 post... well... nice . Funny and interesting. Thanks to everybody I met on this platform, and to Microchip of course. And let's...
View ArticleMCP1640 not recovery after EN (Arnaud Girard)
Hello, I'm using the MCP640B exactly like indicated in the DataSheet.The output voltage is 5V and the input is a cell of 3V (when it new) and work until 1.8V. The 5V output is only used to power a...
View ArticleOP-Amp Spice model not working (Janani Baskar)
Hi! The following spice models are not working properly on LTSpice,MCP6001, MCP6002, MCP 6004, MCP6441.Generally most op-amp model are not working properly i.e. getting an error called time step too...
View Articlewriting a middleware for pic32MX (laitasso)
Hi,I have a project to write a software for pic323x device. I need to write a middleware that interact with device derivers ( gps, and other sensors).The software should contains algorithms that...
View ArticleMCP39F5xx 24bit ADC sampling interval or frequency. (CtrlKX)
Hi All.I'm designing a new product around the MCP39F5xx series chips, specifically the MCP39F511.I simple question I have is what is the sampling frequency of the 24 bit ADCs ?I can not seem to find it...
View ArticleMCP73837 - very short LOW to HI-Z pulses when battery full (gmorfeus)
Hi, I've created a device where power part is designed using NCP3170. The Li-Ion charger controller and backup is done with MCP73837 (AN1149). Input to the MCP is arround 4.45V and doesn't go below...
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