What Is PRAM and How Does it Works

Introduction to Parameter Random Access Memory (PRAM)

PRAM is pronounced as pee-RAM which is the short form for Parameter Random Access Memory which stores the system settings. Think how is PRAM working in pc? This is one kind of RAM mem

ory that first designed, developed, and started used in Macintosh computer made by Apple Computer introduced in 1984 in PowerPC processor architecture from IBM to provide the Mac user a comprehensive feature so that the user can get the previous parameters settings after a power reset.

If you are thinking about types of RAM and learning from different blogging websites, obviously your mind will be fluctuating and you can’t get the proper answer. But these are the theoretical philosophy if you are thinking about the practical real idea to implement in your project then go ahead below to learn more. But always keep in your mind How does PRAM works?

Design Of P-RAM: How P-RAM designed and why?

The PRAM is not a different RAM or physically separate RAM available on SOC. This is a small portion of RAM memory available inside the RAM. It is designed with the same RAM design using the same material but there will be a separate power channel to get the power from the external battery as you can say NV-RAM. By which it can store the data even the main power will go off whereas in normal RAM area will get erased. Basically it was designed for the computer system to store the different parameters like as: screen resolution and color depth, the time zone setting, speaker volume, and the startup volume choice, the date and time, desktop pattern, mouse settings, volume settings, and other control data set with control panels.

Working Principle of P-RAM

The working principle of Parameter Random Access Memory (P-RAM) is based on a combination of the principles of both SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory).

Like SRAM, P-RAM uses a series of transistors to store data in a static state, allowing for fast access times and low latency. Unlike SRAM, however, P-RAM uses a smaller number of transistors per memory cell, resulting in a higher storage density similar to DRAM.

In a P-RAM memory cell, the transistors work together to store and retrieve data using a series of read and write operations. When a write operation is performed, the transistors are configured to store a specific data value, which is then retained in a static state until the next write operation.

When a read operation is performed, the transistors in the memory cell are used to sense the stored data value and output it to the memory controller. This process is repeated for each memory cell in the array, allowing for fast and efficient access to the stored data.

Overall, the working principle of P-RAM is based on a combination of the fast access times and low latency of SRAM with the high storage density and low power consumption of DRAM, making it an attractive solution for a wide range of applications in computing, storage, and memory systems.

The PRAM is basically working as normal RAM which gets the power from processor Vdd supply, whereas the P-RAM can get the power from an external battery. For which it will store the data even any power off will occur. If any reset or power loss will occur, RAM will lose the data but the P-RAM still holds the data by which the default values for the nitty-gritty details of your device will be available even after any hard reset of your microcontroller.

Due to this feature, nowadays it is used in every high end embedded processor basically in automotive & Aerospace ECU’s to store the instant data for restarting of ECU from previous settings. So that the user will enjoy the seamless entertainment. But if you are thinking that How does PRAM work so that it is getting that much high priority in embedded chip design, then you are correct, for this, you can follow up on my forum to get updated or you can learn it in another article is available.

Advantages of Parameter Random Access Memory (PRAM)

Parameter Random Access Memory (PRAM) is a type of computer memory that combines the benefits of both SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory). Here are some of the advantages of PRAM:

1. Speed: PRAM has the fast access times of SRAM, making it ideal for high-performance applications.
2. Non-Volatility: PRAM is non-volatile, meaning it retains its data even when the power is turned off, making it useful for applications where data persistence is important.
3. High Density: PRAM has the high storage density of DRAM, making it more cost-effective than SRAM for large memory arrays.
4. Low Power Consumption: PRAM consumes less power than SRAM and is more power-efficient than DRAM, making it ideal for battery-powered applications.
5. Scalability: PRAM can be easily scaled to meet the demands of growing applications, making it a flexible solution for future technology needs.
6. Cost-Effective: Compared to SRAM, PRAM is more cost-effective due to its high density and low power consumption.

Disadvantages of Parameter Random Access Memory (PRAM)

While Parameter Random Access Memory (PRAM) has several advantages, there are also some disadvantages to consider:

1. Complexity: PRAM technology is more complex than traditional memory technologies, making it more challenging to manufacture and requiring specialized equipment and processes.
2. Limited Availability: PRAM is still a relatively new technology and is not yet widely available on the market, limiting its accessibility for many applications.
3. Cost: While PRAM can be more cost-effective than SRAM for large memory arrays, it is still more expensive than DRAM, making it less accessible for some budget-conscious applications.
4. Performance: While PRAM has fast access times, it may not be as fast as dedicated SRAM in some applications, such as high-performance computing.
5. Reliability: As with any new technology, there are concerns about the reliability and long-term stability of PRAM, especially in high-stress or high-temperature environments.

In conclusion, while PRAM offers several advantages, it is important to carefully consider its limitations and drawbacks before deciding whether it is the right solution for a particular application.