Tagged Questions

0
votes
1answer
38 views

What are different media for uC (microcontroller) to store data that shall be input to a PC later [closed]

Well we can have a uC Embedded device that will use a chip to store data somewhere on the PCB. Than it can have firmware that will enable one to gain access to this data by means of a USB connection ...
39
votes
9answers
3k views

How can anyone use a microcontroller which has only 384 bytes of program memory?

For instance a PIC10F200T Virtually any code you write will be larger than that, unless it is a single purpose chip. Is there any way to load more program memory from external storage or something? ...
5
votes
9answers
400 views

Microprocessors/Microcontrollers - Do registers have addresses?

My Embedded Systems professor keeps referring to the memory locations of registers as their respective "addresses". I'm confused by this; I was always under the impression that in any microprocessor, ...
0
votes
3answers
200 views

Interfacing with RAM from a PC, e.g. SDRAM / DDR, to a microcontroller

I'm looking into interfacing standard PC form-factor SDRAM or DDR sticks to a microcontroller, but I can't find any definitive details on how they work in terms of how the bus works. I guess it's ...
3
votes
5answers
181 views

Text editing memory management

I'm building a PIC-based text editing 'laptop'. I have an SD card connected to the PIC and am using a keyboard and an LCD screen. My problem is that I want to edit real big files like for example ...
1
vote
1answer
99 views

SDRAM on opposite side of board with respect to uC

Just a quick question. Is it advised against to place a high speed memory device on the opposite side of the PCB with respect to the microcontroller? And if it is ill advised, how is it possible to ...
0
votes
0answers
40 views

Exemples how to connect camera module with micro-controller (Record videos) [duplicate]

Possible Duplicate: develop webcamera with battery and memory to SELF RECORDING (Disc Processing System) i have searched everywhere on the net on how to connect the camera module with micro ...
2
votes
2answers
299 views

Dynamically allocating memory for an embedded application

I am working on a Project that will requires using an MCU to receive frame packets with unknown frame length on reception, but each reception has an octet from which you can deduce the number of ...
3
votes
1answer
310 views

What are these pull ups for on this SDRAM?

Apologies for all these questions about SDRAM, but I want to get this next board run right. I have an LPC1788 processor with an external memory controller I am interfacing with SDRAM. There is no ...
2
votes
1answer
247 views

Interface Mobile SDRAM (1.8V) with 3.3V SDRAM controller

I am looking for a 256Mbit SDRAM module in BGA format, to buy in units of 1000. However the cost for these modules are extremely high for packages using a 32bit bus in standard 3.3V voltages, however ...
2
votes
3answers
951 views

SDRAM issue - LPC1788

I have been using an NXP LPC1788 dev board which I have developed my application on (.NET Microframework Cortex-M3 Port). Everything was well and good on this board, I had no issues with RAM or ...
4
votes
2answers
611 views

What Are Lock Bits?

What are lock bits in microcontrollers used for? Are they something specific to AVRs, or used more of a general concept in microcontrollers?
0
votes
3answers
258 views

What does address like 0xABCD_EFGH means in a memory map?

What does an address like 0xABCD_EFGH means in a memory map? I am new to programming microcontrollers, so please excuse me if its a bit lame. What does one mean by "123 Data Input Registers ...
8
votes
6answers
2k views

Is it possible to use multi gigabyte DRAM modules with a microcontroller?

I have two leftover 2GB RAM modules that I removed from my MacBook Pro when doing an upgrade. I was just wondering if these were usable with, for example, an Arduino. I'd be too much of a beginner to ...
4
votes
4answers
344 views

Can MCU memory be subject to bit errors and failures?

One of my older prototypes for Super OSD always had one little bug. A single pixel in the video, about midway in the frame would always be off. It did not really affect anything as most pixels ...
6
votes
3answers
530 views

PIC18 Memory Management

The limited stack size of budget PICs is a problem area and I have adjusted my code to accommodate this reality. I currently adopt a rough paradigm of grouping closely related functions into a module ...
5
votes
1answer
1k views

ATTiny2313 ISR stack usage

I'm using an ATTiny2313 to act as a serial concentrator. It only has 128bytes of RAM. I think I'm running out of RAM during the ISR. My question is how much RAM (stack) does an ISR use to save the ...