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Yes Vcc is stable (output of regulator is 5.00, output of MCU pin about 4.9v).
Port pin is stable for about 10 minutes and the start to go down (about 0.01v every second).
Yes I've oscope, I'll check it and give feedback to you.
Note that the PCB is four layer. May be this problem caused by...
Excuse me I'm not the designer of this circuit. I know that ASSR is not a good choice and thanks for your complete guide.
The right circuit is pullup circuit for sensing switch push state with ground signal and paralleled resistors is for connecting 12v of battery to pullup circuit.
This assr...
Hi, I have many boards that use ASSR1510 in outout of microcontroller for switching battery voltage on and off.
But the behavior of this component is strange. When the MCU drive led of ASSR through bias resistor (560 ohm), the ASSR works Ok but after a short time, the output voltage of MCU...
I checked this on two correct board that with erasing the MCU, the current go down but after programming it, the current go up!
I written the code with SPC5 studio that have a poor support and based on Eclipse. this compiler have some ready component that I don't see the generated codes and...
Hello. I'm working with SPC560 series MCU from ST company and SPC5 studio compiler. for getting started, I'm working on a simple LED blinking program but when I program my hex file to MCU, the MCU takes high current and damaging (about 300mA).
working with SPC5 Studio is hard and complex...
Hi,
I've installed Altium Designer 14.2.4 on windows server 2008 r2 and it works good but when I want to create new PCB file, it crashes and give a "Information" title box that says "Please wait a moment" forever and also give "access violation error" for Core3D.dll .
do you know what is the...
according to your comments, I get connect one resistor to power supply with this spec : 0.15 ohm/ 10w
and connect a 1.3v power only for test and seen the resistors current flow is 3.5A and it's heat is touchable for a few seconds and is better than last test. now I'm confused that how this can...
thanks kanni1303, I tested resistor network in parallel with 10w ceramic power resistors. with my calculations the resistors operate in desired current but the main problem is that the resistors go very hot after a few seconds even with use in 50% of it's nominal power. is this temperature...
Hi,
I want to make a dummy load circuit with this specifications : for testing purpose of a power supply, this circuit should have about 10 different current channels, the input of each channel is fixed 12v from power supply and every dummy load channel must take a specified current for testing...
Hi,
I have a battery pack that contains 10x9v NiMH rechargeable batteries. the scenario : in the "use" mode all of this batteries connections are series but I want to make a small circuit to add "charge" mode and change all batteries connections to parallel with a switch and charge all batteries...
Please guide me for international standards and standards needed for export. also I want to focus on Telecom related devices. for example I want to know if there is an standard code for producing enclosure of a device and it's materials or an standard code for ergonomic design of a device or any...
Hi,
what standard certificates must observed for an electronic device plastic housing and frame or other sections?
I'm researching about Standards needed to observe for designing and manufacturing electronic equipments hardware and software (from housing and box to electronic boards and...
Hi, I want to convert analog video signal output of an analog camera to digital signals and give it to ARM MCU and do some processes on it (because ARM MCU has OS and softwares needed). I founded that I must use the "ADV7180" SDTV Video Decoder from "analog devices" (or similar IC) to do this or...
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