topic Re: Can MKE14F512VLL16 support Quad SPI in Kinetis Microcontrollers

Can MKE14F512VLL16 support Quad SPI

prathamesh_h_patil — Mon, 29 Nov 2021 11:28:38 GMT

Can I interface Quad SPI to MKE14F512VLL16 controller as it support LPSPI and How we can interface it please explain in details.

Re: Can MKE14F512VLL16 support Quad SPI

jingpan — Wed, 01 Dec 2021 02:51:12 GMT

Hi @prathamesh_h_patil ,

Yes, LPSPI can support QUAD SPI flash. You can refer to this link

https://community.nxp.com/t5/i-MX-RT/LPSPI-how-to-set-for-QSPI-flash-device/m-p/1177734

Unfortunately, we don't have any example of the LPSPI interfacing an external flash.

Regards,

Jing

Re: Can MKE14F512VLL16 support Quad SPI

prathamesh_h_patil — Wed, 01 Dec 2021 04:33:27 GMT

Thanks For confirmation.

Can you please share its QPSI frequency?

and what it support Like Single Data Rate (SDR) or Double Data Rate (DDR)?

Re: Can MKE14F512VLL16 support Quad SPI

jingpan — Thu, 02 Dec 2021 07:07:12 GMT

Hi @prathamesh_h_patil ,

Please see table 56 in datasheet. Frequency of operation can be max to fperiph/2.The max fperiph is from SPLLDIV2. So, max frequency is 168/2/2=42Mhz.

LPSPI doesn't support DDR.

Regards,

Jing

Re: Can MKE14F512VLL16 support Quad SPI

prathamesh_h_patil — Thu, 02 Dec 2021 07:29:09 GMT

Thanks for information,

Q1. Could you please share Application note for Quad SPI for Flash memory?

Q2. Does MKE14F512VLL16 controller has restriction on particular make Quad Flash memory should use or it is free for any make quad flash?

Q3. Can MKE14F512VLL16 support SPI based Graphical LCD? if yes please share example.

Re: Can MKE14F512VLL16 support Quad SPI

jingpan — Thu, 02 Dec 2021 09:35:34 GMT

Hi @prathamesh_h_patil ,

A1. No, there isn't.

A2. I think it is free for any QSPI flash.

A3. Yes, it can. But there isn't example.

Regards,

Re: Can MKE14F512VLL16 support Quad SPI

prathamesh_h_patil — Sat, 18 Dec 2021 06:39:06 GMT

Dear NXP team,

As per the MKE14F512VLL16 datasheet supply voltage is 2.7V to 5.5V, so the question is if we use 3.3V as supply then is it okay for all operations, or else do we need to connect the 5V power supply.

Kindly check and suggest which supply is better for controller performance 3.3V or 5V?

Re: Can MKE14F512VLL16 support Quad SPI

jingpan — Tue, 21 Dec 2021 02:32:53 GMT

Hi @prathamesh_h_patil ,

Either 3.3v or 5v is okey. You can freely determine VDD according to peripheral circuit. There is no difference in performance.

Regards,

Jing

Re: Can MKE14F512VLL16 support Quad SPI

prathamesh_h_patil — Tue, 21 Dec 2021 07:16:45 GMT

Dear NXP team,

If my supply of the controller is 3.3V then can I connect the 5V peripheral signal to controller and Vice versa?

Please confirm it.

Regards,

Prathamesh Patil

Re: Can MKE14F512VLL16 support Quad SPI

jingpan — Tue, 21 Dec 2021 10:28:39 GMT

Hi @prathamesh_h_patil ,

No, you'd better don't design like that.

Regards,

Jing