All Questions
Tagged with data microcontroller
24
questions
0
votes
0
answers
70
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Losing external EEPROM data after power Cycles on ESP32
Sending "1" starts the write operation into the eeprom every 1 second to the next available address, and sending "2" starts reading the written values into the eeprom. When there's ...
- 21
2
votes
3
answers
79
views
Power Cycling USB
BACKGROUND
I am connecting a USB device to a PCB with a microcontroller. The USB must be power cycled (plugged out and in) in order for the USB to be recognised by the software. The USB connector will ...
- 39
1
vote
2
answers
118
views
Why do we use a low resistors on Data lines for an ADC for example or a clock?
Why do we use a low resistors on Data lines for an ADC for example or a clock ?
- 71
0
votes
2
answers
172
views
Outputting correct data on shift register with clocks tied from microcontroller
I want to be able to output correct data from the microcontroller to the 74HC595 shift register without using the clock lines separately. This schematic matches my ideas for 16 bits of data:
The ...
0
votes
1
answer
118
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How are these Data Buffering Methods same or different from each other?
I am trying to understand the operation of a Serial Bus protocol converter chip. It connects with the serial bus on one side and on the other side it provides its data on the MCU host interface.
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- 139
0
votes
2
answers
100
views
Chosing microcontroller for a sensing project
I am upon chosing a microcontroller for a PCB board project. MCU collects data from capacitance to digital converter (from a capacitance sensor) via I2C and I would like to pass that data to a host PC ...
-1
votes
1
answer
66
views
minimizing waiting time for 8051 port state
I made myself a project with standard 8051 microcontrollers (AT89S52 and AT89C4051) and will be making more with the same due to price and availability.
When data is being sent from one GPIO pin from ...
0
votes
1
answer
51
views
Bidirectional data bus divided into nibbles not returning correct data - 8051
Since I have 10 I/O lines connected between two microcontrollers (AT89C4051 + AT89S52), I am trying to get away with elegant data transfer. Instead of spending months redoing an entire circuit board, ...
0
votes
1
answer
64
views
Do some microcontrollers require data to be loaded in temporary memory before programming?
When I programmed the AT89Cx051 series of microcontrollers, I didn't have to use special memory to program the data, but now even though I'm following the instructions in the datasheet (found from ...
2
votes
3
answers
173
views
Is it better on two closely connected microcontrollers to send nibbles with an ack or a byte with a delay for an ack?
I'm trying to figure out the best approach to transfer high-speed data one way between two microcontrollers (with their own crystals of the same speed) of the same variety (between AT89C4051 and ...
0
votes
2
answers
564
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Can 74HCT buffers work just as well as 74HC buffers between parallel port and target?
I'm making a circuit to program the AT89S52 microcontroller in a serial fashion as follows:
Call me paranoid but this time I'm using resistors on all outputs to the micro as well as RC networks on ...
11
votes
8
answers
6k
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Saving data without a microcontroller?
Is there a way to save voltage data directly (without a microcontroller) to anywhere, like EEPROM, SDCARD, etc.?
For example, I am using an MPX pressure sensor which gives 0V to 5V analog output. ...
- 113
0
votes
0
answers
131
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Send data from MCU to Embedded Linux CoM
I'm using an ATSAME70Q21 MCU to record 32 channels of analogue data (via SPI ADCs) and 32 channels of digital data (via GPIO). My embedded device has an iMX6-based CoM (Toradex Apalis), which runs ...
- 183
0
votes
0
answers
45
views
Faster 8051 not taking the slower 8051 pin status correctly
I'm trying to do a rather simple data transaction between two 8051 microcontrollers using a variant of the SPI protocol. The large one is a slave and the small one is a master.
The documentation for ...
0
votes
1
answer
78
views
Can this circuit validate AT89Cx051 micro if best valued components are used?
This is a circuit I made in an attempt to validate that the 20-pin microcontroller is an AT89Cx051. and the correct LED will turn on based on how much ram the chip has.
While the first step is ...
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