Dear supporter

I want to translate the following KBA, please confirm to my work.

https://community.cypress.com/t5/Knowledge-Base-Articles/Device-Selection-in-PSoC-Programmer-KBA88255/ta-p/255379

Best Regards.

Yutaka Matsubara

Dear community members,

We use the PWM component with a downstream RC circuit in our design to achieve a clean analog voltage of 0-5V. Unfortunately, voltage drops occur sporadically. A CYBLE-214015-01 32-SMT is used in the design. The problem does not occur with every module either. The pins are all loaded with 180 kilohms.
All inputs on the CYBLE are wired as recommended with the corresponding inductances.
I am grateful for any help.

Daniel

Dear supporter

I want to translate the following KBA, please confirm to my work.(KBA90791)

https://community.cypress.com/t5/Knowledge-Base-Articles/Operating-Voltage-Range-for-CY8CMBR3xxx-Family-of-CapSense/ta-p/259772

Best Regards.

Yutaka Matsubara

Dear supporter

I want to translate the following KBA, please confirm to my work.

https://community.cypress.com/t5/Knowledge-Base-Articles/Operating-Voltage-Range-for-CapSense-Express-Devices-KBA82463/ta-p/258209

Best Regards.

Yutaka Matsubara

Dear supporter

I want to translate the following KBA, please confirm to my work.

https://community.cypress.com/t5/Knowledge-Base-Articles/CapSense-Signal-to-Noise-Ratio-KBA82807/ta-p/248086

Best Regards.

Yutaka Matsubara

Dear supporter

I want to translate the following KBA, please confirm to my work.

https://community.cypress.com/t5/Knowledge-Base-Articles/Sensitivity-and-Capacitance-Range-for-the-CY8C21x34-CSD-KBA82522/ta-p/247889

Best Regards.

Yutaka Matsubara

Dear supporter

I want to translate the following KBA, please confirm to my work.

https://community.cypress.com/t5/Knowledge-Base-Articles/Calculating-the-Resolution-for-CY8C21x34-CapSense-CSD-KBA82521/ta-p/248971

Best Regards.

Yutaka Matsubara

Hi,

this is a follow-up to a previous post on placing a PSoC right under a CSX touchpad in applications with limited space.

I have a first iteration of such a design, but there are a few things I worry may affect the signal quality of the touchpad. It is made out of 2 PCBs linked together with castellated holes. The first PCB is the PSoC module with castellated holes, and the second one is the touchpad, with mounting pads to solder the module on top.

Here is a view of the stackup to better understand the intended device

The capsense pcb has 4 layers: 2 first are for the touchpad, the 3rd has a ground hatch to protect signal integrity, and bottom layer has  the pads for the castellated holes.

1. The PSoC PCB could be 2 layers, but I made it 4 just so I could add a second hatch ground to isolate capsense signals even more. Is this a good thing, or I just risk stealing to many field lines from capsense to ground?

In the image below, we can see my TX lines and their filtering resistors close to the RX lines, and close to the star ground

2. Now, should I move the TX lines closest to the star ground, increasing the distance from RX lines, or move them closer to the RX lines and separate them with a trace connected to VSS capsense?

3. Another point I want to address is how sensitive and critical are the CIntX capacitors. in the image below, we see that I have I2C lines moving right next to the  CIntA and CIntB capacitors.

can this be an issue? should I keep fast signals away from the capacitors? the space limitation pretty much forces me to do so. I also placed a via for each of the 2 CIntX capacitors, and this eats away a little bit of space. Could I join the 2 capacitors to the save via like so?

4. I did not put a single ground or power plane on the PCB, to prevent field line sinking on the touchpad. Could this be an issue given that the ground comes from supply and follows a single trace all the way to the star ground?

Thanks a lot!

In electro-tech-online I asked about my need of making a device wich could generate a sinusoidal signal (by PWM method) with a 18F4550 Ucontroller, but it seem it is not possible. Someone named Dana suggested me to see the information about this cypress device.  So, the questions are:

1. Is it possible to make a threephasic 5 KHz signal (3 120 degrees unphased signals), wich could be used by a power stage to handle about 1 ampere each branch in some kind of power transistors?

2. If the signal is analog, is it a way to isolate the control stage from the power stage?

3. Is it possible to stop or restart this signals with a Ucontroller signal?    Or further, to control amplitude?

4. Do this device is sold and there are existences now on Mouser, Arrow or DigiKey?

Thank you for your time

Luis

Hi,

请问CYW20719B2是否支持MIPI接口？

我找到一个链接：https://www.cypress.com/file/411336/download

但这是wiced-studio下cyw20719b1的文档，ModusToolbox下开发cyw20719b2是否可用？

谢谢