Secure Authentication中的主题 I am looking for a very low power LPC Microcontroller

I am looking for a very low power LPC Microcontroller

doini — Fri, 28 Feb 2020 05:50:48 GMT

Hello,

I am used to work with the microcontrollers from the LPC family (Cortex M) and now I need a very low power LPC microcontroller to work on battery which need to last long, maybe half of year (of course I'll use some of its peripherals also, like timers, ADC,...). In the same time the microcontroller needs to have a big processing power, because during running at some intervals of time I need to manipulate a lot of data at once.

I was thinking of the LPC 54102 microcontroller for low power consumption and to use Cortex M4 with the main program and Cortex M0 only when needed, in order to save power.

Would you like to recommend the best LPC very low power microcontroller which could help me with processing also?

I would appreciate any answer.

Thank you,

Doini

Re: I am looking for a very low power LPC Microcontroller

jeremyzhou — Mon, 02 Mar 2020 08:41:04 GMT

Hi Doinita Marcu,

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Before answering your question, I'd like to know more information about your application, then I can give a better suggestion for you.
So I was wondering if you can answer these below inquiries.
1. Do you have particular requirements about the clock frequency, size of flash and RAM, and peripherals?
2) What's the mean "manipulate a lot of data"?
Does it mean float calculation or data moving?
2) Will the MCU enter the low power after completing the data manipulation?

Have a great day,
TIC

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Re: I am looking for a very low power LPC Microcontroller

doini — Tue, 03 Mar 2020 01:40:50 GMT

Hi jeremyzhou ,

Thank you for answering me!

As an estimation I think the microcontroller should have 128 KB of FLASH, 200 KB SRAM, and it will use the peripherals: GPIO (10 I/O pins), TIMER, RTC, ADC (1), SPI, I2C, UART, PMW, optional DAC.

I will not use float calculation, manipulate the data would mean data moving and processing according to some algorithms.

The application will be an always-on application, the MCU operating in a power-down mode, listening for incoming data, which when available, can wake up the microcontroller to acquire the data, and then the MCU needs to have the power to process it fast. For example a zone of 90 KB in SRAM needs to be processed in a time of 1 milisecond.

Thank you for helping me,

Doini

Re: I am looking for a very low power LPC Microcontroller

jeremyzhou — Tue, 03 Mar 2020 03:58:55 GMT

Hi Doini,

Thanks for your reply.
According to your requirement, I'd like to suggest you consider the LPC5460x series, I think they're good for your application.

Have a great day,
TIC

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Re: I am looking for a very low power LPC Microcontroller

doini — Tue, 03 Mar 2020 17:57:43 GMT

Hi jeremyzhou ,

Thank you for your help, I appreciate it!

Doini