Questions tagged [interface]
An interface defines clear boundaries and communication/interconnection between systems.
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Problem in detecting the line feed character in inter-micro UART communication [closed]
Setup:
There are two MCUs, communicating with each other over UART. Let's call the transmitting MCU as A, and receiving MCU as B. MCU A and B are different. A is SAML22 (using IAR Compiler) and B is ...
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Simplest way to interface a high-speed (125 Msps) ADC: FIFO, RAM, SerDes or FPGA
I have a 1.8 V, 125 Msps ADC (ADS4125) with an output of 12-bit parallel LVDS or CMOS. The system is operating in bursts: the data is sampled for 8 - 30 us, with a 100 ms wait time in between. I need ...
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How to view raw image of Image Sensor like OV5640?
I'm using the OV5640 image sensor with an FPGA in JPEG mode with 720p 30 fps. Currently, I can send images via Ethernet and view them on my PC. Now, I want to capture raw RGB images directly from the ...
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Interface micro SD card with MCU and USB port at the same time [closed]
I'm designing a PCB and I would like an MCU (ESP32-S3) to be able to write periodically on a micro SD card (logs). I'm using SPI. I also would like to be able to get those logs through a USB port on ...
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Memory Interfacing of 8086
I'm finding trouble doing this exercise from a course I'm taking:
Interface 4 RAM's of 64 kB and 4 ROM's of 64 kB, both of which have 2 active low Chip Enable inputs. Also, the circuit has to be done ...
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Programming ELM327 PIC18
I have (second hand) a modified ELM327 with 18F25K80 and a FT232, seems has been modified to be programable via USB has a jumper wire from pin 3 (reset) from FT to pin 1 (mclr) 18F, swap quartz and a ...
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SCI-TX doesnt work properly (Serial communication)
Part Number: TMS320F280025C,
Other Parts Discussed in Thread: LAUNCHXL-F280025C, C2000WARE,
I have a simulink model for a power electronics project and i want to see detailed data using SCI-TX port in ...
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capacitive soil moisture sensor connected to attiny85
je suis en cours de créer une circuit électronique d'un capteur d'humidité du sol capacitif avec un aop pour amplifier le signal sortie de capteur , et ce capteur relie avec le microcontrolleur ...
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Is this undocumented functionality officially suported by the semtech sx1276?
Often after transmitting a message on the sx1276 operating in LoRa mode, the sx1276 is put in receive mode to allow receiving a message. Empirically, I have found that the opreg can be written to ...
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Interface definition in package in SystemVerilog
I have a very simple interface definition in a package in SystemVerilog:
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Interfacing an LM2903B output to a microcontroller
I would like to connect the output of a LM2903B comparator to my controller to read the output signal. Both the comparator supply voltage +13V and the controller supply 3.3V are referenced to the same ...
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TFP401PZP: Unable to get proper video output, ghost screen/distorted pixels
I have designed my own display driver board using a TI TFP401PZP TMDS DVI receiver/deserializer which is connected to a 24-bit, parallel RGB, 7 inch capacitive touch display with a resolution of ...
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How to connect RS-422 to 2× RS-485?
I want to connect two Arduinos via RS-422. I have 1 converter RS-422 to TTL and two RS-485 to TTL. How I can connect outputs of my converters (Y,Z,B,A on MAX490 and A,B on MAX485)?
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Communication between two microcontrollers with independent Vcc powers
I need to send signals from one STM32 to another, while each has its own power source (each a separate battery pack). both units operate with the same voltage level (3.3 V) but @ different core clock (...
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Interfacing ratiometric sensor to precision differential ADC
Please consider following simplified schematic:
I'm currently in process of designing the analog interface for prototype heat pump driver/controller. It's job is to measure multiple analog inputs ...
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Is it a bad idea to use CAN-Bus to control robot wheels?
I am working as a student on a 6 wheel robot project and have problems deciding what communication protocol to use for controlling the locomotion system.
The idea is to use a Master Controller in a ...
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5 V encoder output to 3.3V micro
I need to interface a 5V digital output from an encoder(https://media.futek.com/content/futek/files/pdf/productdrawings/trs605.pdf) with a STM32F411 (https://www.dfrobot.com/product-2338.html). What ...
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Connect internal CRT's RGB to external LCD
In my boat i have a sonar with CRT monitor and no external video output. I would like to connect a LCD monitor instead. Schematic below show the RGB signals internally.
Reg pic. My question is: If ...
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Sensor components to read device status indicators/LEDs on a separate device
I'm planning to build a circuit that reads LEDs displayed from another separate off-the-shelf proprietary system without reverse engineering or modification (which would cause warranty issues) of that ...
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What Interface is my LCD display using?
My Tektronix TDS 2024's 5.7” STN display (320x200, color) needs replacing. Instead using the same expensive, hard-to-find, obsolete one, it would be a good opportunity to upgrade to a more modern ...
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eMMC interfacing with EC200U SDIO Power domain
I need to interface my eMMC(THGBMJG6C1LBAU7) memory with EC200U from Quectel.
The Quectel E200U has two SDIO ports one is working at 3.3V power domain and
other one is working at 1.8V power domain.
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Is it possible to use a MOS 6502 with a AE29F2008?
I wanted to buy a MOS 6502, but before that, wanted to know if it is possible to interface it with an AE29F2008 memory (recovered from a PC). The problem is that the AE29F2008 has three address pins ...
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Tsi107 PowerPC Host Bridge Vs Processor
I a confused regarding the difference between a powerPc host bridge and a processor. According to the host bridge datasheet, it can be programmed, and it has interrupt generation and handling, and ...
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Best practice to constrain dynamically tuned FPGA->DAC data path
Data is moved from the Zynq 7010 to AD9779A DAC using parallel SDR link at 155.52MHz. This DAC generates DATACLK clock that is used to clock data out of the FPGA (see picture for the relevant FPGA ...
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How to interface 6 HC-SR04 ultrasonic sensors to Raspberry Pi 4
I am a beginner to Rasberry Pi and working on a parking warning system for a go-kart. The plan is to use 6 ultrasonic sensors (3 at the front of the kart, wired to one of the breadboards, and 3 at the ...
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What is the purpose of this circuit that is part of a Renesas RX231 programming interface?
I traced a IO-Link USB master PCB to understand how it works. The ciruit I found makes sense to me except for a part of the programming interface. It's marked red in the following schematic. (TXDA is ...
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Microcontroller DC analysis Voh(min) from the datasheet
I am doing the DC analysis of my Ethernet interface.
Interfacing SAMA5D2 with FS32K148HAT0MLUT. This is a mac to mac communication.
In the datasheet of FS32K148HAT0MLUT Voh(min) value is not available....
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SPI pins in Winstar TFT display?
I'm trying to figure out SPI pins for Winstar WF32DSLAJDNN0 TFT display. The datasheet is not very clear on that.
I think the right pins are as below, but would be great to get that confirmed before ...
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Use the interal framebuffer of a display driver IC (here: ST7789V ) in RGB mode
I have an embedded RTOS system driving a display with ST7789V over uC's RGB565 interface. To save RAM, it would be nice to avoid the typical double buffering by having only one framebuffer in the uC ...
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SPI interrupt signal
My question is based on this question over here.
I just want to clarify what is the purpose of the SPI interrupt signal. Isn't the 4 SPI clock and data lines, & chip select sufficient for the SPI ...
user220456
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STM32H750IBK6 SDRAM FMC CLK maximum frequency
In the STM32H750IBK6 REV V, what is the maximum FMC_CLK to run SDRAM?
The datasheet has two different values (for the rev V and rev Y IC revisions).
What is the safe area of operating FMC CLK with ...
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Can HSG + TIM + HSG sandwich ever be better than one layer of HSG?
Here is a photo of a big diode and it's TIM (thermal interface material.) The foil appears to be aluminum, very thin and reflective, with white, crusty HSG (heatsink grease / paste / compound) on ...
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On-air light circuit interface
I need help for the design of on-air light interface. The DB15 connector output of console arc10 is 12 V, 200 mA (max). The load is on-air light bulb, 230 V AC. I'm considering the interface circuit ...
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Relationship between PSEL and PENABLE signals in the APB protocol
I would like some clarification on the relationship between the PSEL and PENABLE signals in the APB Protocol. The specification states:
The PENABLE signal is asserted the following clock after PSEL ...
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On a (Windows) PC, can the TxD pin on COM1 be bitbanged? If not, why not?
In this question:
Why usb to serial port converter can’t program avr microcontroller?
Cornelius claims:
"DTR and RTS are the only pins of the serial port that can be bitbanged."
But is that ...
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How do I find resistors values for a TTL to ECL interface?
This is the photo of the ttl to ecl interface
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Is it better to have one computer do everything or have a computer and a microcontroller for servos? [closed]
I am debating whether it is a good idea to offload the 12 servos I plan on having in my project onto an Arduino rather than on the Raspberry Pi. I am planning on using the Adafruit 16-Channel 12-bit ...
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LIN interface INH pin
What would happen if I pull down the INH pin of this IC to GND?
I am unable to understand what would happen if I pulled to GND or make it HIGH?
Can someone help me ?
user220456
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Do you have to use the same transceivers for RS422 at both sides of a link?
If I have two boards connected via RS422, do the same transceiver ICs have to be used at either side, or is it sufficient to have logic level voltages be the same even using different model ICs?
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Clock division and duty cycle for ST8034P Smart Card interface
The ST8034 is a family of interface ICs for contact Smart Card. Here is the Data Sheet. My question is about the ST8034PQR.
when the CLK output is active, does fCLK = fCLKIN or fCLK = fCLKIN/2 ?
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Freeing NUCLEO STM32 board pins for FMC interface use
I want to interface a Nucleo-H743ZI2 board (MB1364E) with a memory chip using STM32's FMC.
In order to do this I need to free up the following 4 pins, to be used by the morpho connector:
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Should LVDS SerDes communication be with or without driver?
I have LVDS SerDes signals coming out from FPGA1 IO and have a few questions regarding the design.
My plan is to output the signals from the FPGA1 to a connector and from the connector a cable will be ...
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Cooling SMDs from the bottom
I remember a clever way to cool a SMD with a thermal pad from the bottom.
It's like a copper pin or a rivet that goes through the board, in a hole right under the SMD thermal pad. Then it has a flat ...
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How do I interface a low power controller with a higher power load?
I am not an electrical engineer (rather a photonics engineer), so I am looking for some direction on how to attack an issue I have.
Basically, I need to drive a 150 Ω load with a computerized ...
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CAN-Physical Layer PtP
In a current design i have to form a Point-To-Point communications link in an industrial environment.
Based on some research and thinkering i came up with the idea to use a CAN-Physical layer for this....
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Trying to understand Output Leakage vs Input Current
I have a device (VSC8540) driving another device (LS1046). The driver specifies output leakage current as ±85 μA. The receiver specifies input current as ±50 μA.
First of all, is the input current ...
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Active filter for low capacitance AC coupled input
I need to interface an AC coupled sensor with rest of my system. The sensor I am working with produces approx. 10V peak with 10V of DC offset but it has a very small series resistance about 50fento.
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Interface a CML device with FPGA
I want to interface an IC with an FPGA however I noticed that the datasheet says the digital control inputs are differential and CML standard based. Can someone please guide how to interface this if I ...
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PCIe End-Point configuration for communication with Root Complex
I have an ambiguity regarding the PCIe initial configuration which is performed by the root complex (RC) on the end-points (EP).
Both devices have their own base address registers (BARs). The RC ...
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ADF4106 PLL output voltage lower than ATmega8A input voltage
I am working on making a frequency synthesizer getting ~900 MHz out of a VCO, using ADF4106 PLL.
Now, for programming the PLL, I am intending to use AVR ATmega8A microcontroller.
Everything is good, ...
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