Questions tagged [reset]
The reset line on a computer or other digital circuit places the circuit in a well defined initial state. Most microcontrollers have a built-in power-up reset to start the CPU executing code and may also have external resets and watchdog timers to help recover from unexpected events.
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FSM to latch first of three pulses and hold winner until reset - interview question [closed]
Interview Question:
I have a small “race” problem to implement as an FSM using D flip-flops only. There are three lanes. At the end of each lane there is a pushbutton circuit that outputs a clean one-...
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ESP8266: Is there ever a good reason to use the reset pin?
As I understand it, the ESP8266 can be reset by pulling either the Reset pin or the Enable pin to 0V. Holding either pin at 0V will keep the ESP in reset indefinitely.
In addition, holding Enable at ...
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Conflicting Logic Thresholds in MAX4514 Datasheet for +12V Operation
I'm planning to use the MAX4514 with a +12V supply to reset integrator and sample-and-hold capacitors.
In the "Logic-Level Thresholds" section, the datasheet states:
The logic-level ...
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Control the active-low reset pin of a PMIC
I am using the MCP16502 PMIC IC to supply the power to an MPU. I am currently facing an issue with controlling the reset pin (pin 24 - nSTRT). The schematic I am using is based on the Typical ...
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STM32F103 | Bluepill: SPI SDCard only works after resetting
My SDCard only works after reset, either soft reset, pin reset, or debugger reset.
Followed this guide:
On Power on f_open returns ...
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Global reset pin being both an input and output
I am having this MPU.
I have a few questions regarding the NRST (pin 43) and NSTART (pin 28) pins. On page 20, section 6.1, it seems to indicate that the NRST pin is internal to the module and ...
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FPGA Reset Circuit after Download
What would be the easiest way to create a reset signal after new configuration has been downloaded to an FPGA?
I've always done a reset manually via a switch .. but there has to be a better way - ...
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Register initial value without explicit reset input (Verilog)
In this question, the following code was presented:
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Use an RC network to ensure reset on power on
I'm using a DLP-RFID2 module. In my initial design I was running out of GPIO so I didn't connect the RESET line. The datasheet does not say it is mandatory.
Unfortunately the module does not respond ...
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How to stop a DPST (NC) Relay from auto-resetting?
I have designed a thermal protection circuit, where once a thermistor temperature reading exceeds 40 °C (104 °F), a LM393 comparator is triggered to feed a low DC signal to a NPN transistor base pin, ...
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555 Bi-Stable mode gets triggered by reset pin
I prepared a Bi-stable 555 circuit based on below schematic. Threshold pin is connected to ground as suggested. Many tutorials left it to float. I remember like once I faced some issue by leaving ...
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ESP32 resetting Adafruit EMC2101 (TCA9548A) using a 10k resistor?
Do I just need to add a 10 kΩ resistor on one of the GPIO pins of my ESP32 in order to use it to connect to the TCA9548A (Adafruit EMC2101) reset pin?
The RST pin on the TCA9548A (Adafruit EMC2101) ...
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SD card via SPI: any way of getting it out of stuck state after aborted SPI operation(s) without power cycling it?
using ESP32 and its IDF platform libraries to access SD card via SPI, we have a situation where e.g. panic reboot of ESP32 leaves the SD card 'stuck' such that it cannot be mounted any more after ...
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What happens if a microcontroller stays in reset?
Triggering a reset with the reset pin is usually expected to be an event, but what happens when a microcontroller's reset pin stays triggered?
For example, I am working with an STM32F411RE on a ...
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STM32 not starting when supply voltage not dropping to zero
I am facing start-up issues during power on for the STM32L433.
When voltage comes from zero everything works fine. But, if I disconnect the power supply from the wall socket and its internal ...
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