dram ecc

Recently, as a result of the project needs, do a data acquisition of single-chip computer platform. Need to transplant FatFs. Now put the final results on the surface.On the STM32 single-chip microcomputer, successfully transplanted FatFs 0.12b, using the Nand Flash chip for k9f2g08.Features: System with FatFs to achieve the erase and write equalization, bad block management, hardware ECC, software ECC erro

Some knowledge of DRAM, first recorded and then sorted out.1. What is memory rank?A memory rank is a set of DRAM chips connected to the same chip select, which be therefore accessed simultaneous Ly. In practice they also share all of the same command and control signals, and only the data pins for each DRAM is Separat E (But the data pins is shared across ranks).

[Q] Why is stable memory so important?A: Because there are too many things to store on it, for example, BIOS code (which will be mentioned in the shadow section later), device drivers and OS, Etc... if the memory is unstable, you cannot obtain the required data when accessing memory, or you cannot even read or write data, you will find that the system hang (maybe randomly) during post is not used, or blue screen... Therefore, "Poor bios dram Sizing"

Rom and RAM are both semiconductor memory, Rom is short for read only memory, and Ram is short for random access memory. ROM can still maintain data when the system stops power supply, while Ram usually loses data after power loss. A typical Ram is the computer memory.Ram has two categories: static RAM (static RAM/SRAM ), The fast speed of SRAM is the fastest read/write storage device. But it is also very expensive, so it is only used in demanding places, such CPU Level 1 buffer, level 2 buffer.

DRAM is dynamic memory, and its basic unit consists of a transistor and a capacitor. Please see:The figure is the structure of a basic unit of DRAM: the state of the capacitor determines whether the logical state of the DRAM unit is 1 or 0, but this characteristic of the capacitor is also its disadvantage. A capacitor can store a certain amount of electrons or a

RAM (Random Access memory). The contents of the storage unit can be withdrawn or deposited as required, and the speed of access is independent of the location of the memory unit. This memory loses its stored content when it loses power, so it is mainly used to store short-time use programs. According to the different storage information, the random memory is divided into static random memory (Ram,sram) and dynamic random memory (Ram,dram).ROM (Read-on

Dram sram sdram differences I read a book just now and have a better understanding of SRAM dram. The following statement is not comprehensive. I suggest reading a book to see why DRAM needs to be refreshed.This is determined by the ram design type. DRAM uses a T and an RC Circuit, resulting in capacitor damage

a power failure, the data in Ram disappears. SRAM is short for static RAM. It is a type of memory with static access function. It can store internal storage data without refresh the circuit. The SRAM can store the data stored in the internal memory without refresh the circuit. The DRAM (Dynamic Random Access Memory) needs to be refresh and charged once every other time, otherwise the internal data will disappear. Therefore, the SRAM has high perform

Abandon dram, embrace flash, Facebook redo Memcached-CSDN.NET Abandon dram, embrace flash memory, Facebook redo memcachedPosted on | 2929 views | source Facebook | 9 comments | author FacebookFacebookmemcachedmcipper flashAbstract: The social media giant Facebook's "Cold Storage" strategy has taken another big step forward, and the guiding principles for moving forward are still flash memory. Facebook's

about the SRAM , DRAM , SDRAMSRAM : Static random memory, do not need to refresh the circuit, which makes static RAM faster than dynamic RAM, but, because he contains more devices, low integration, not suitable for large capacity of memory, generally used in the processor's cache, SRAM speed is very fast, In the fast read and refresh to ensure data integrity, SRAM circuit structure is very complex, the production of the same capacity SRAM than the cos

Random access memory (RAM) is divided into static random access memory (Static random access memory-sram) and Dynamic random access memory (Memory-dram). one, static random access memory (SRAM)Static random access memory is aRandom access memoryone of them. The so-called "static" refers to the memory as long as it remainsPower on, the data stored in it can be kept constant. Relative,dynamic random access memorythe data stored in (

ROM and ram refer to the semiconductor memory, ROM is the abbreviation of Read only memory, RAM is the abbreviation of random Access memory. Rom can still hold data while the system is powered off, and ram usually loses data after power-down, typical RAM is the memory of the computer. There are two main types of RAM, a static RAM, which is very fast, is the fastest storage device to read and write, but it is also very expensive, so it is only used in very demanding places, such as CPU Ram/sram,

The following content is from Wikipedia:SRAM vs DRAM:static random access memory (Static Random-Access MEmory, SRAM) is a random access memory one of them. The so-called "static" refers to this kind of memory as long as the power is maintained, the stored data can be kept constant. In contrast, the data stored in the dynamic random access memory (DRAM) needs to be updated periodically.dynamic random access memory (Dynamic Random Access MEmory,

Based on the long-term observation of the DRAM and NANDFlash industries, DRAMeXchange, an analysis department of TrendForce, has put forward the following six major trend forecasts for the industrial development in the past two decades:Trend 1: PC-DRAM current mainstream specification DDR3 will dominate the market until 2014The mainstream specification for PC-DRAM