One-chip microcomputer

辛昕

One-chip microcomputer [Copy link]

 

I wonder if you know of any other ultra-low-priced microcontrollers of this type. Please recommend some.

That’s right, you read it right, one cent, one cent, one cent, RMB.

At present, the only brands I know of, and whose prices can be found on LiChuang Mall or through serious consultation, are the following:

Jiuqi

Of course it is OTP. On Lichuang, the price of low-end sop-6 sop-8 10KU can be as low as 0.08, which is enough for one cent.

Ying Guang

similar.

Not so famous, or established not long ago

Maxic/Maxic Micro

A company called Meixin, whose agent is Meixin Micro, is relatively unfamiliar and I haven't found much information about it.

Model M8P605B (0.13)

M8P605B-v1.3.pdf (1.04 MB, downloads: 10)

2023-9-1 13:13 上传

点击文件名下载附件

I asked a few other companies and they said that the price is a little higher because they have ADC or comparator.

But it is basically around 0.2, 20 cents, 20 cents for a single chip microcomputer.

Shengsi Micro

Model MC30P6250 (0.12)

With comparator

MC30P6250用户手册_V1.1.pdf (2.91 MB, downloads: 16)

2023-9-1 13:19 上传

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littleshrimp

It's really cheap

qwqwqw2088

Taiwan PADAUK (Ying Guang)
SOT-23-6 package
It is more than two cents
PMS150C-U06

辛昕

qwqwqw2088 posted on 2023-9-1 15:01 The SOT-23-6 package of Taiwan PADAUK (Ying Guang) is more than two cents PMS150C-U06

Um, I asked, it's one cent, the manufacturer I asked is

Shenzhen Zhien

Wait, I might be misremembering.

Zhien (Ying Guang) and Yufanwei (Jiuqi) did not make any bids.

辛昕

qwqwqw2088 posted on 2023-9-1 15:01 The SOT-23-6 package of Taiwan PADAUK (Ying Guang) is more than two cents PMS150C-U06

Wait, let me ask.

But, that’s not right. You can check the prices of Jiuqi and Yingguang on LiChuang. As long as they are not pre-ordered, the prices on LiChuang are usually real and reliable.

Well, Yingguang is indeed expensive.

PMS150C is indeed priced at 0.23KU

Jiuqi is also more expensive, it’s not 8 cents, it’s 15 cents. Did I remember it wrong before?

Fred_1977

With such a low price, how much volume do you need to produce to make a profit? I have never used such a low-priced MCU.

辛昕

Fred_1977 posted on 2023-9-1 17:46 With such a low price, how much volume do you need to run to make a profit? I have never used such a low MCU before

When used for simple control, the focus is not on the piece itself, but on other parts of the product.

As for Taiwanese manufacturers, they are definitely running in large quantities.

In the case of long-term substitution, the quantity will be very large.

Especially for OTP, it is even bigger.

Small household appliances are consumer products that are used in large quantities.

There are so many small toys and the like.

damiaa

OTP is a one-off project written in assembly language. It is not played with in large quantities. If a bug occurs, a large number of them will be scrapped.

It is still less responsible to play with flash.

辛昕

damiaa posted on 2023-9-1 20:12 OTP is a one-off program written in assembly language. It is not played with quantity. If there is a bug, a large number of programs will be scrapped. It is still less responsible to play with flash. ...

It is not an assembly language, like Jiuqi, it supports standard C syntax, but you need to use their IDE

In addition, you can first use the corresponding FLASH model for development and debugging, and then burn it to the OTP version after completion to save costs

damiaa

Xin Xin posted on 2023-9-1 23:33 It is not an assembly, like Jiuqi, it supports standard C syntax, but you have to use their IDE. In addition, you can use the corresponding FLASH model to develop and debug first, complete...

Well, this is a large amount that can be used.

qwqwqw2088

damiaa posted on 2023-9-2 10:27 Well, this is a large amount and can be used.

The reason why these microcontrollers are cheap is actually because of the volume

There used to be a Taiwanese Elan microcontroller. I don't know if it's still available now. It was cheap, but at the time, its emulator was special and it was very expensive to buy.

Agents sometimes also provide utilities

qwqwqw2088

Small appliances, electric bicycle alarms, soybean milk machines, wall breaking machines, beauty massage equipment, smart switches, small fans, toys, etc., in large quantities

辛昕

qwqwqw2088 posted on 2023-9-2 11:09 Small appliances, electric bicycle alarms, soybean milk machines, wall breaking machines, beauty massage equipment, smart switches, small fans, toys, etc., in large quantities

Yes, that kind of

吾妻思萌

Clearing out inventory?

辛昕

Azuma Simeng posted on 2023-9-2 13:24 Clearing inventory?

I don't usually look for this type of source.

Looking for the genuine ones for sale.

Someone in a group mentioned a batch to me before, but I wasn't very interested and the price wasn't too low.

But it is FLASH 8051, 0.3 yuan, the price is very touching

lanhua

The price of chips is very low, but the development cost is not low.

For some reason, two chips were damaged a few days ago.

辛昕

lanhua posted on 2023-9-2 14:30 The chip price is very low, but the development cost is not low. For some reason, 2 chips were damaged a few days ago.

What model are you using? Development costs are never cheap.

lkh747566933

It's really cheap. The cheapest one I've seen is more than 3 yuan.

辛昕

lkh747566933 posted on 2023-9-3 23:53 It’s really cheap. The cheapest one I’ve seen is more than 3 yuan

That's not possible. STM8S003 is only 1.4 yuan.

常见泽1

A few years ago, I used a domestically made single-chip microcomputer called Aixin.

OTP

It seems to be about one cent.

Pure assembly programming