EVB-KSZ9897 (prabhakarlad)
Hi, Is there anything hard codded stuff in the ISO image ?I want to access the registers from the USB to ethernet bridge from a embedded device running Linux. I have got the KSZ9897 working with latest...
View ArticleMTCH101 CapTouch and humidity problems (zehnderandy)
In an application we built a CapTouch MTCH101 on a little board with the size of 22x20mm. The touch area is a circle with a diameter of 10mm. Around of it, we have a guard ring connected to gnd. We...
View ArticleArduino library for MCP39F521 (gpezzella)
Hellothere is some C code or Arduino code for that chip: MCP39F521 Thanks..
View ArticlePower AC-DC in IC MCP39F501. (LluciferT)
Hi all. Im read datasheet and guide: MCP39F501 Power Monitor Demonstration Board User's Guide. And look something Power AC-DC in IC MCP39F501. - Everybody can show me calculator I_load with some...
View ArticleMCP23017 - GPIOB7 (josexavier)
Hi!I'm using a MCP23017 as a PARALLEL - SERIAL (I2C) converter. After some time it hangs the I2C bus and host can't communicate again with it until a reset. Researching on the internet I read about not...
View ArticleHelp Selecting PIC and CAN Transceiver for Simple HSCAN Experiment (racingsubby)
Hello! I hope this is the correct forum to ask this. I've been asked to look into possibly making a small system that reads in a CAN frame from vehicle system that is normally being transmitted, save...
View ArticleNeed help with calculation AT9933 sheme from appnote AN-H51 Supertex (Hund1966)
Hi. I am trying to calculate sheme parts and have some troubles with it. At first i cant understand some input parameters in appnote AN-H51.On page 8 chapter "Design of the Boost-Buck converter with...
View ArticleMCP73837 - help understanding documentation on STAT and PG (gmorfeus)
Hi everyone, I am putting together a device that will have MCP73837 (not my first device with that chip). But what's not clear to me is on page 5 of the documentation where information about PG and...
View Articlean Audio Amplifier with PIC (DarioG)
(going on with some funny applications...) Using a PIC24 or a dsPIC, grab analog input from a Microphone, convert it (22/44 Ksamples/sec) into numbers, scale for PWM and send them to a speaker! Several...
View ArticleQuestions about analog input voltage of MCP3911??? (andydong1583)
Tow signals: 1, ECG signal (0.01~150Hz); AMP :0~3V, Base line 1.5V (Note: the signal has been GAINed and preprocess.) 2, Heart sound signal (20~2KHz);AMP :0~3V, Base line 1.5V (Note: the signal has...
View ArticleMCP3424 SO14 - I2C Bus Failure (morbak)
Hi, I'm in porto phase PCB with PIC18F4580 & I2C bus components.I've 3 MCP3424 (+3.3v) measuring contraint jauge 4wires value.Jauges could be connected or not and CHx-/+ pins could be left not...
View Articleusb2514 doesn't see usb flash after suspend (tip62)
Hy guys!We have a pcb board with usb2514. On the 2 and 3 downstream port connected usb-to-uart bridge and the first downstream port we want use with external usb flash.After first power supply USB2514...
View ArticleKSZ8081 capacitive coupling? (MIBI)
ups, my post disappeard, now again..I want to connect two KSZ8081 like in AN-120.How to do it in detail?Thank you in advance!..
View ArticleMIC2930x max capacitive load (Grad Tacken)
Hi, I would like to use a MIC29302 to power a GSM modem. To handle the peak currents I would like to apply a 6800uF capacitor at the output. The datasheet only mentions: This capacitor need not be an...
View ArticleAbort ongoing ADC conversion (deft)
I have an MPC3428 but I guess the question is pretty generic During normal operation I'm doing a conversion at regular intervals, but sometimes (upon user request) I need to change channel and do a new...
View ArticleRE46C317/RE46C318 with two terminal piezo horn (userron)
I understand that this device is normally used with a three-terminal piezoelectric horn. But in the Datasheet is described also the possibility to use a "modified two-terminal Piezo horn". Where can i...
View ArticleMCP9804 and conversion time (achin)
According to the datasheet, the sampling time for the highest resolution is approx 250 ms. What is supposed to happen if I try to sample faster than that (like 5 times faster)? I would suspect that the...
View ArticleTC654 Fault state RPM2 register reads zero, also alternative bus address?...
Question about the TC654 PWM Fan Speed Controller: I have a simple test circuit built based on the datasheet example. If the speed drops enough to trigger a fault condition then the RPM2 register...
View ArticleAny suggestion to interface between different logic levels? (0-5V to...
Hello, I'm designing a circuit that generate analog EMG (eletromyography) signals from a dataset. My circuit uses and D/A converter (DAC8831) with digital levels: Vss = 0V and Vdd = 5V but the analog...
View ArticleHandling multiple interrupts on MCP23S17 (charma86)
I am unclear on how the MCP23S17 handles multiple interrupt conditions that are nearly coincident with each other. When an interrupt is being serviced and the INTF register and GPIO registers are being...
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