LPC Microcontrollers中的主题 Re: FlexIO equivalent on LPC55

FlexIO equivalent on LPC55

dav1 — Wed, 21 Apr 2021 19:17:10 GMT

Are there any equivalent ways of doing what flexio did on the kinetis range.

need to syncronize the DAC of an LPC55 to control a demux/S&H circuit to achieve say 16 outs or more.

Thx

Alice_Yang — Thu, 22 Apr 2021 09:45:14 GMT

Hello,

There is no DAC module of LPC55xx.

Alice

dav1 — Thu, 22 Apr 2021 11:39:57 GMT

Strange, the datasheet says

2x 12-bit 1Msps DAC
1x 14-bit 5Msps DAC

Regardless, please reply the question on flexio vs achieving the same using SCT

Alice_Yang — Fri, 23 Apr 2021 09:50:05 GMT

Hello Dav1,

About the datasheet you mentioned, please share the part number of your chip, I will check .

About "the question on flexio vs achieving the same using SCT", please describe detail what function

do you want to do with SCT.

Alice

dav1 — Sat, 24 Apr 2021 14:04:07 GMT

please see my first post that describes the problem

frank_m — Mon, 26 Apr 2021 06:17:06 GMT

An ADC is something quite different from a DAC.

> need to syncronize the DAC of an LPC55 to control a demux/S&H circuit to achieve say 16 outs or more.

To me it is not clear what that is supposed to mean, especially in the context of other vendor's peripheral connection mechanisms.

The ADC peripheral is extensively described in the MCU user manual, including trigger options (timer, external) and transfer options (DMA).