Dismantle ABC and CCB U-Shield

eric_wang

Dismantle ABC and CCB U-Shield [Copy link]

The last time I used these two USB shields was probably ten years ago. I don’t need them anymore, so I took them apart and took a look.

Use a flat-blade screwdriver to pry open a crack along the gap, then insert a corner of the bank card and slide it along the gap to open it.

This CCB chip is easier to identify, it is a Winbond W25Q16DVSIG chip

Related information: https://datasheet.eeworld.com.cn/search.html?t=partno&from=datasheet&k=W25Q16DVSIG

A security chip IS8U192A from Huada, but no relevant information was found.

There is a layer of wax on the U-shield chip of the Agricultural Bank of China. After scraping it off, you can see that the chip has traces of polishing.

I can't really tell what the silkscreen on this is, does anyone know?

Finally, put it back and continue to use it.

chunyang

Bank U shields are all ODM+OEM, and the designs may be different in different periods. The designs of the five state-owned banks, namely, the Agricultural Bank of China, the Industrial and Commercial Bank of China, the Construction Bank of China, and the Bank of Communications, are different, and even in different regions. U shield is the earliest and most stable market for domestic dedicated MCUs.

wangerxian

It seems that HuaDa Semiconductor is quite powerful.

miaods2002

There are also a few useless ones. I'll take them apart when I have free time to see if I can find anything useful.

miaods2002

miaods2002 posted on 2022-5-20 12:30 There are also a few useless ones. When I have free time, I will check them out to see if there is anything useful.

Change the LED light or something

dfwisdom

I have several of them, the most expensive is 80 rice, 40 rice, this one is still worth using.

Verifone

I have several of these in my hand, and I am ready to throw them away as garbage. I will open them and take a look later.

eric_wang

Verifone posted on 2022-5-27 09:51 I have several of these, and I am ready to throw them away as garbage. I will open them and take a look later

Looking forward to sharing

花鼓舞

It seems that Huada Semiconductor is quite powerful. It seems that Huada Semiconductor is quite powerful. It seems that Huada Semiconductor is quite powerful.