Questions tagged [microprocessor]

The microprocessor is an integrated circuit that elaborates information in the form of digital signals. Not to be confused with a microcontroller, which embeds many additional devices to control embedded systems.

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Where can I develop on ARM NPU?

Arm boasts NPU's that have been designed for vision inference: https://developer.arm.com/ip-products/processors/machine-learning/arm-ethos-n However I cannot find where to purchase/develop NPUs (i.e. ...
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Two microprocessors with same machine language and different assembly language [closed]

I need to find two microprocessors that have same machine language but different assembly language.
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Programming c language , with change the input state, output is active [closed]

Programming c language , with change the input state, output was activated for 1 second then was deactivated
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How do I format this Pro Micro?

I am using a Pro Micro, which the Arduino software for sketches identifies as Arduino Micro. When I plugged it into power the LED lights were too bright for my eyes to handle, so I verified and then ...
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Explain Idle, Sleep, Stop and Standby modes of power consumption in a microcontroller with examples

It is given in a website that "In Idle Mode, the CPU and Flash are stopped. The rest of the chip continues to operate in this mode. If you do not need to execute code, but are taking a sensor ...
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53 views

How does this expanded memory bus work?

I'm reverse engineering a laser printer (Laserjet 1320) and I need to infer some things about the memory bus. The full schematic I've made while reversing is here (in pdf) on Drive. I'm not all that ...
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69 views

Selecting a low cost, compact controller/processor for a custom sensor device [closed]

I'm a phd student in aeronautical engineering, and I'm designing a custom sensor device for my research. I've figured out the initial stage of the device, which involves converting the analog signal ...
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143 views

Soft errors from SEUs/SETs in early 8-bit microprocessors?

Why is it that soft errors due to single-event upsets/transients never seemed to be a problem in early 8-bit microprocessors, like the MOS 6502 or the Zilog Z80? The microprocessors themselves were ...
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Why is OUT0 incorrect?

The input frequency is 2 MHz and the output should be 2 kHz since I used mode 3 and the initial count value N=1000d. The output frequency is 500kHz.
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42 views

What happens in an 8085 if HOLD, READY, and RESET requests are received at the same time?

What happens if an 8085 microprocessor 8085 is executing a program and it gets a request from the Ready, Hold and Reset pins at the same time? How will microprocessor respond?
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Can anyone tell me why nothing is displayed on the scope?

This design isn't working, nothing is displayed on the scope. ...
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38 views

Control of flow of current usig Tri-state buffers

Are Tri-state buffers essential to the building of processors? If we connect the control input of the Tri-state buffer to the Q or Q bar of a flip flop then we can program?
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Impact of reduction on Dynamic energy and dynamic power in microprocessors

A microprocessor has been designed to have a dynamic switch which reduces power consumption when the loading reduces. Assuming a reduction of 20% in voltage reduces clock frequency by 20%. Calculate ...
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653 views

Difference between clock cycle, machine cycle and instruction cycle of the CPU

There is a lot of ambiguity between the definition of these three terms. So, I wanted to know what is the intuition behind these terms and how all three are connected to each other.
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Why is the 8061 microcontroller described as having 256 bytes of internal memory?

According to doc (http://www.auto-diagnostics.info/pdf/ford_eectch98.pdf), this 8061 microprocessor chip contains 256bytes of internal RAM (also referred to as register file in the doc). However, the ...
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68 views

How are opcodes decoded at hardware level in any controller?

I know that any compiler will convert human readable code to binary. This binary code is a opcode which has instruction+operands in it. I do not understand how this opcode is decoded at hardware level....
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Simulating RV32I ALU + load/store instructions using verilog

I'm writing a Verilog code to simulate RISC-V RV32I ALU and Load/Store instructions in Verilog. It contains of 5 parts: regfile.v- which contains the 32*32 registers required for RV32I, decoder.v- ...
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Is this the correct w recognize Opcodes for a DIY 8bit Processor

simulate this circuit – Schematic created using CircuitLab i am starting with designing a 8bit computer and probably turn it into reality , so lets say i start with a 8bit 32kb memory and i want ...
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109 views

Chip select for the ROM

An 8 Kbyte ROM with an active low Chip Select input (CS') is to be used in an 8085 microprocessor based system. The ROM should occupy the address range 1000 H to 2FFFH. The address lines are designed ...
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How to find the dynamic energy of a processor without using capacitive load?

I have the following question: A cell phone performs very different tasks, including streaming music, streaming video, and reading email. These tasks perform very different computing tasks. Battery ...
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66 views

What processor architecture is in a 230GMULps KPU design?

While AI products are becoming popular recently, when looking at the "Seeed Studio Grove AI HAT for Edge Computing Artificial Intelligence Board" it mentions a RISC-V, a 230GMULps 16-bit KPU ...
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135 views

Altium Convert .PrjPcb to .PrjMbd - Single Board to Multiple Board?

I started my project single PCB board. But now, I need multiple boards for this project. How can I convert my file format? How can I convert my Schematic Diagrams for multiple board project? How can I ...
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Looking for criticisms for a VNA-like meter I am designing

I would like some help from anyone who could let me know any flaws or improvements in my design they can find and help me reconsider any last minute design fixes before I send my new project off to be ...
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112 views

What sensors would be suitable for measuring masses of the range 0.5 g to 1g? [closed]

I am working on a project that involves measuring objects whose masses range from .5g to 1g. Preferably looking for something small and thin but at this point, anything that accomplishes the task is ...
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Do microprocessor have any special hardware to do division and multiplicaiton?

My old school understanding is that multiplication is nothing but successive addition and division is nothing but successive subtraction. So, my question is there any changes being done like do we ...
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59 views

confusion understanding a processor?

As shown highlighted in attached photo,In case of 6713 dsp,during each clock cycle, up to eight instructions can be carried out in parallel Does this happen in case of every processor that multiple ...
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Why don't we make CPUs with 1000s of layers to make use of space in the third dimension?

I am wondering why don't we make processors such as CPUs with 1000s of stacked layers to make use of space in the third dimension now that we have three-dimensional transistors. To be clear I'm ...
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89 views

What happens when main() returns on ARM-GCC

As I am working myself into the AT91 Bootstrap project, I have found that its main() function apparently returns the address of the next-level software component: <...
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268 views

DAA operation in 8085 microprocessor

Let the content of register A is 98H. Both Auxiliary Carry flag and Carry flag are set i.e. AC=1 & Cy=1. If now I execute DAA once, both nibbles will get added with (0110) and the result is FEH ...
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85 views

How to decide whether to place a microcontroller on the top or bottom side in PCB layout?

How to decide whether to place a microcontroller on the top or bottom side in PCB layout? What are the advantages on the top side? What are the advantages on the bottom side?
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184 views

Cellular module(4G/3G/GSM) interface to host processor or microcontroller through UART how the data rate is achieved?

The majority of cellular modules are interfaced to host microcontrollers or microprocessors using UART interface or some times USB interface (where internally it's UART). But the data rate of UART is ...
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164 views

Why does the conditional CALL instruction in the 8085 microprocessor take 2 machine cycles, when the condition is not satisfied?

When the condition gets checked in the 6th T-state itself and is found to be not satisfying, why does it need the 2nd machine cycle?
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Do we know the processing power (in GFLOPs) of Apple's H1 chip? [closed]

We know that Apple's Arm A4 Chip that powered the iPhone 4 had approx 1.6 GFLOPs of processing power. In the second generation of Apple's Airpods - there is a custom chip called the Apple H1. My ...
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Feasible to capture data to/from a 1970s RAM chip?

I have a 1978 Bally Playboy pinball machine. The processor is a 1Mhz 8-bit microprocessor Motorola 6800. I would like to build a way to extract/watch game state from outside of the machine. The best ...
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T2081 SPI pin Muxing

In my current design using the T2081, I want to interface both SPI and eMMC card. While reading the datasheet of T2081, I found that SPI_CS0 pin is muxed with sdhc_dat4 which I need for my eMMC ...
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54 views

Suitable motor for steering wheel angle of the self-driving car?

I am working on the self-driving car as a final year project. I want to map the steering wheel motor angles with frames captured via a camera of the track. In order to generate the dataset, I am ...
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54 views

Relay from door sensor to laptop usb port?

I want the opening of the front door to launch a script on my laptop. I looked around on the internet and only found relays that allow you to send commands to external devices such as alarms and ...
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1answer
59 views

Is an even number of DRAM chips required?

I want to design a microprocessor based board (NXP imx 8m). All the boards I've seen so far have an even number of DRAM chips. If I want 4GB of RAM, do I have to use two 2GB DRAM chips or can I use ...
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101 views

Connecting display to arduino [closed]

So i've been googling displays for the Arduino, and they are all usually small or the wrong shape, but they all seam to have GPIO connectors in the back (shields) that connect directly to the Arduino. ...
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63 views

How does the input voltage affect the current consumption of a microcontroller?

Is there a relationship between the current used by a microcontroller unit (MCU) and its input voltage? In other words, given a MCU with a wide-input range (e.g. 2.7 to 5.5V for the ATmega328P), will ...
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44 views

Read/Write from microprocessor memory

I have just started to learn how a microprocessor works and I have some questions. I have read that the way the microprocessor read/writes data is by setting the address on the address bus, then ...
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45 views

Power circuit for a microprocessor

This is my first question here, and my english is not the best, so i am sorry if i miss some community rules :) I have a microprocessor MIMXRT1064DVL6A from NXP, and I am having a bad time figuring ...
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When a processor has a given frequency, what is the order of magnitude of the typical transition frequency of the internal transistors that make it?

The transition frequency (or cut-off frequency) of a transistor represents the cut off frequency, so that above it, the behaviour is not normal (the impedance diverges). A processor is made of a huge ...
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126 views

How is Machine Learning/Artificial Intelligence used in Electrical Engineering? [closed]

So i've been trying to find out the answer to this question but i can't seem to find a specific answer with examples. by the way i have heard about "Machine Learning Processors" but i don't know what ...
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Accessing odd address memory locations in 8086

I am a beginner in microprocessors. Apologies if my question is too naive. The memory section of the 8086 processor is divided into two segments: even and odd to allow the CPU to fetch 16 bits in one ...
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single stepping TS68000 microprocessor

I recently got TS68000 microprocessor. My final goal is to build a simple computer based on that CPU. For now I am trying to find a way to single step it. I found schematic below by ...
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Atmel SAM3X / SAM3A, handle interrupts from Parallel Input/Output Controller (Peripherals)

I want to enable the PA8 pin in a processor (Atmel SAM3X / SAM3A). I have set: PIOA_MDER[7]=0 PIOA_MDDR[7]=0 PIO_OER[7]=0 PIO_ODR[7]=1 so that the tri-state ...
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Is microcontroller power consumption directly related to its operation time?

I have to decide on a way to measure the efficiency of an algorithm running on a microcontroller/microprocessor. My thought is that I can use the runtime of the algorithm to complete a certain task ...
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62 views

Is there any device or way to measure how many watts a computer's processor is using? [closed]

I know there's a device to measure how many watts a computer is using, you get an energy meter you plug the computer into it and it tells you But I'm interested in finding out how many watts a ...
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Can an instruction set do everything?

Given a certain instruction set, and that any high-level code is just converted to machine code anyway, then except simulating human intelligence, is it sufficient enough to do anything you want a ...

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