Having difficulty getting I2C working on ATtinyX14 uC (CobraRGuy)
Hi all and TIA for any and all replies, I'm new to both Atmel and Microchip microcontrollers and am having a lot of difficulty getting even basic reads and writes to work. I chose the ATtiny414 based...
View ArticleUSB3320 VBUS (Fanratar)
Hello. I want to use USB OTG Type-C 20V. But the problem is that USB3320 VBUS only 5V. How should I be? Can I leave not connected? Maybe there's an alternative?..
View ArticleSuitable device for reading analog signal (musmanq)
Hi to all, I want to read analog signal from current sensor ACS712 (5A) using PIC.I think 12f675 will work.Is there any other device cheaper than 12f675 for the said purpose? Thanks in advance...
View ArticleMCP39F511 Power-Monitor Auto Calibrate not working - logged steps attached...
OK, I have a MCP39F511, and I'm trying to use the auto calibration commands, yet my device is still not calculating the right results. I have attached the log stream of the Arduino "Writing" and the...
View ArticleDr. Wattson - Energy Monitoring Board for Arduino, based on MCP39F521...
Hello everyone! I have created a new energy monitoring breakout board based on the MCP39F521 for Arduino and other MCUs, that I call Dr. Wattson - please check out http://bit.ly/2wg2wte for more...
View ArticleMIC29300 3.3 V Regs don't work? SOLVED (t1d)
Dropping 9vdc, from Switch Mode wall wart, down to 3.3vdc. Setup: See jpeg PSU set to 9vdc, 0.3a, Floating GND DMM set to volts, input tied to V Reg Output, GND tied to PSU GND V REG = Authentic...
View ArticleMistake in AN1426 application note diagram (twelve12pm)
There appears to be a mistake in Application Note AN1426 (DS01426A) Page 7, Figure 8. Capacitors C16 and C17 should be connected from 3.3VA to GNDA but are shown connected to GNDB...
View ArticleLASCAR DDM4 LCD (AY0438 + 4 Digits) (IBRA)
Hello, I'm using the LASCAR DDM4 LCD, but I can not find a some example with C code for start. you can help me ? Thank you..
View ArticleAM Modulation with N-channel and P-channel MOSFETs (marcelomendoza7)
Hi, I have the IC TC7920 (Figure 1) that has Two Pair, N- and P-Channel Enhancement-Mode MOSFET with Drain-Diodes, and the IC TC6320 (Figure 2) tha has a pair of N- and P- MOSFET. These ICs are used to...
View ArticleD flipflop power question - SY55852UKG (m3atwad)
Hello, I have a question regarding a CML flip flop. I have the circuit (logically) shown in CML_Vcc.jpg attached. My question is this. With CML, do BOTH the D-FF and fanout buffer have to be on the...
View ArticleTC4427 Driver problems .... possible solution (Trevor Smith)
Hi All,Hope I'm in the right forum here. Also, hope nobody's had a day like mine today, chasing TC4427 "failures" ........ but I might have a solution. I'm using multiple TC4427 drivers to control many...
View ArticleMCP1642B-50I/MS (Ratendix)
Dear all, I have a problem with my MCP1642B-50I/MS (fixed 5V output step up regulator).In our application the step up regulator has an measured regulated output of 3.3 Volt.Its behaviour is exactly...
View ArticleUSB2640i weird behavior (madokapeng)
Hi, Our product is using USB2640i USB2.0 media controller. The product CPU is PPC 440Ex. There are two downstream port. One is USB for external storage, the other is micro SD card which is loaded with...
View ArticleKSZ9893 100Mbit/GbE combination? (Ollittm)
I have an use case where we want to interface a µCU to gigabit ethernet due to policy, not real need. Presume network admin or rather site policy requires GbE access and 100Mbit is disabled. Now there...
View ArticleProblem with MCP2221A & Windows 10 (jdeglavina)
I'm using the MCP2221A (http://ww1.microchip.com/...viceDoc/20005565B.pdf) to communicate between USB and I2C - at least I'm trying to. I've installed Microchip's drivers, and utility, but Windows 10...
View ArticleNeed help with SY55852UKG (m3atwad)
Hello, I'm implementing this part in a design (SY55852UKG) and would like to get some feedback regarding the terminations. I can't find a good place to post - the clock forum was empty when I checked...
View ArticleProblem with TC7920 (marcelomendoza7)
Hi everyone, I'm using the TC7920 (Two Pair, N- and P-Channel Enhancement-Mode MOSFET with Drain-Diodes) to drive a ultrasound emitter (Murata MA40S4S, a piezo-electric transducer) with a ±10V signal,...
View Articlewrite code in non-volatile memory of MCP2221 (noel_t)
I need help on how to write a very small program to turn the GPI 0 of MCP2221 ON in power up by default. MCP2221 has two memories. #1SRAM, #2Flash (Non-volatile) In order to have the power-up default,...
View ArticleMCP2221 I2C in C# (noel_t)
I need to write a program in C# for MCP2221 I2C module. Can you help me with the code?Any sample? And how can I test it?..
View ArticleBiasing MCP6S91 Programmable Gain Amp (Ted M)
I have a design that uses a MEMS analog microphone that I want to feed into an ADC for sampling. The requirement changed to include the need to have automatic gain and I added the MCP6S91. The question...
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