Although he has been away from Yuanxin for two years, in terms of system, Jiang Tao has never placed himself outside Yuanxin. Seeing Su Yuanshan saying two things in a very formal attitude, he became serious.

"Yeah, you said."

Su Yuanshan smiled: "In a few days, Senior Brother Gao Xiaodi will bring Yuanxin's entire CPU team over."

"Damn?" Jiang Tao's neck tilted forward as soon as he heard this.

Then he immediately realized that he had reacted a little loudly and smiled and said, "That guy is going to make a fuss when he comes."

Su Yuanshan laughed.

Jiang Tao and Gao Xiaodi are classmates, and they are even Gao Xiaodi and the brothers sleeping in his upper bunk.

At that time, Su Yuanshan joked with Gao Xiaodi and asked him to come over to cache, but Gao Xiaodi's excuse was to not come and was embarrassed to bully Jiang Tao.

"Haha, after pulling it over, the cache team will be merged directly into the CPU team, and then return to the Yuanxin architecture, and will be separated from you in the future."

Jiang Tao nodded naturally, but immediately realized a problem.

He still has someone downstairs!

In other words, there are still dozens of people in the cache team that are all from Yuanzhong Microelectronics!

Then, this is a long story.

——When Su Yuanshan started to build CPUs, there were only 70 or 80 people in total. Among these 70 or 80 people, except for the dozens who followed Li Mingliu to support Chengguang Institute, the remaining fifty or sixty people were all "new recruits" led by Gao Xiaodi.

With just this, Su Yuanshan had to develop architecture and cache, which was really a bit unsuccessful. So Su Yuanshan set his mind on Yuanzhong Microelectronics - he asked Li Mingliu to bring only a few core team members to Yuanzhong, and then directly pulled Yuanzhong's people away.

You know, Yuanzhong had only a hundred people at that time, and he was gritting his teeth to support Su Yuanshan.

Now that the cache is done, Jiang Tao is still waiting to return it to the people - those veterans who have been tempered by Li Mingliu are all real treasures.

So Jiang Tao immediately became a little nervous: "When will I return my people to me?"

Li Mingliu threw a cigarette to Jiang Tao and laughed: "Old Jiang, don't be so stingy!"

"I'll rub... Xiaoshan, what I said was joint development." Jiang Tao stared at Su Yuanshan and looked at: "Their salary is all paid by me!"

Su Yuanshan was a little embarrassed by Jiang Tao's eyes and laughed: "Aren't you given your joint development subsidy funds? It's enough to offset your salary."

“…”

"Senior brother, I really can't return it to you." Su Yuanshan knew that he had done this a bit unkindly, so he thought for a while and said, "How about this, let's discuss a compensation plan."

“What plan?”

"Let's discuss it later." Su Yuanshan laughed and said, "Let's talk about the second thing first."

“…”

"The second thing is that Lao Zhu's newly established new team specializes in flash memory? To be precise, it specializes in NAND flash memory, you should understand it."

Jiang Tao nodded.

Su Yuanshan said: "Is that true? Where is the flash memory application? There must be some, but it has not been launched now? The only reason is that the price is too expensive."

"But we have a basic common sense that in the semiconductor field, any problem caused by high prices can be broken through? Or is it worth breaking through."

"So I hope? You can also draw a small team to cooperate with the main control chip."

Su Yuanshan said and looked at Jiang Tao: "Don't I need to explain the control mode of flash memory, right?"

Li Mingliu smiled again, "You'd better say it."

Jiang Tao glared at Li Mingliu: "Who do you look down on? A MOSFET (MOS field effect transistor) saves electrons through a doped layer and can maintain its state after power off. This is the basic principle of memory. Then design a chip to obtain the 0? 1 state of the memory? You can obtain the data distribution situation, and then apply voltage according to the read and erase commands to complete the data operation."

"Finally, communicate with the computer's protocol interface..."

Su Yuanshan looked at Jiang Tao in surprise: "Senior brother is so awesome... When did you understand?"

"...Old Li started to do this after he came back. Is there any problem with it?" Jiang Tao rubbed the cigarette that Li Mingliu had thrown to him on the table a few times, and lit it with a click.

Su Yuanshan smiled and nodded: "The principle of this thing is actually quite simple. It is always inseparable from the MOS field manager after tossing and turning."

Jiang Tao said: "But it is always a big problem that cannot reduce costs."

“So we just need to solve the cost.”

Su Yuanshan said with a smile.

...

NAND flash memory?     It is still in its infancy and it is far from real commercialization.

The most fundamental reason is that it is expensive.

The current architecture is still just an SLC architecture? Single     Cell. It only has two changes in 0 and 1 in a unit, and can only store 1 bit of data.

Its advantages are fast? Good stability and long lifespan - in theory, it can reach a lifespan of 100,000 complete erases.

But the exact point is also obvious? Low capacity? High cost. In later generations, the only scenarios that can be used are industrial fields in extreme environments and other fields that are not cost-effective.

However, cost has always been the biggest roadblock that prevents the popularization of a technological product and is also the easiest roadblock to be dealt with.

So a few years later, Intel got a new architecture, MLC-Multi   Level    Cell.

Compared to SLC, each cell unit can store 2 bits of information.

Correspondingly, its manufacturing process is more complex, and its reliability is also reduced in read and write speed, and its service life is even reduced exponentially.

But even so, its price is still a bit expensive and has not brought true popularity to flash memory.

What really makes flash memory popular is actually TLC - Trinary   Level    Cell, which translates into a triple unit.

Each cell unit can store 3 bit information, requiring more complex process and voltage control.

The disadvantages are as always.

However, it is the absolute hero who has allowed flash memory to enter thousands of households.

So much so that QLC was born later - each cell unit can store 4 bit information, with a larger capacity, slower, shorter life, and a lower cost.

Moreover, Su Yuanshan, who came from later generations, knew that in the development of flash memory products, the flash memory architecture was only one of the factors that restricted the reading and writing speed of products, and was not even the biggest factor.

The biggest factor is actually the interface protocol standard for data transmission, followed by the main control chip and related technologies, and finally the architecture is obtained.

Just like the upcoming USB1.0 protocol, although under the initiative of Yuanxin and Xinghai, a relatively radical solution has been adopted, the transmission rate of only 48Mbps at full speed is only four times that of 12Mbps in history.

Under this protocol, even if you use the most awesome master chip and the most awesome flash memory particles, it will be slow.

Therefore, the future of flash memory still needs to be promoted simultaneously by protocol, master control, and particle architecture.

...

Su Yuanshan came here this time mainly to point out two directions to Lao Li.

The first direction is to turn the single-layer structure into multiple layers, so that as many transistors as possible can be stacked on a unit area.

The second direction is naturally MLC.

It happened that Su Yuanshan knew the basic technologies and principles related to these two directions.

But what is annoying is that he doesn't know how to cleverly guide Li Mingliu and the others to the right path.

Just like his attitude towards his senior brothers, Li Mingliu and others are also the cornerstone of Yuanxin, which has great uses. Unless it is absolutely necessary, Su Yuanshan will not be able to personally propose a plan and wait for these people to applaud him.

That would not be of any benefit to the Yuanxin.
Chapter completed!