LPC MicrocontrollersのトピックRe: LPC4333 JET256 temperature is high when using

LPC4333 JET256 temperature is high when using

maggiepan — Tue, 13 Jun 2017 03:54:32 GMT

please help solve the problem of LPC4333 JET 256 high temperature in operation, thanks

Re: LPC4333 JET256 temperature is high when using

maggiepan — Tue, 13 Jun 2017 03:54:56 GMT

it's very urgent

Re: LPC4333 JET256 temperature is high when using

soledad — Tue, 13 Jun 2017 17:26:03 GMT

Hi,

Could you please provide more information about your issue.

Which peripherals are you using?

What are you connecting to the MCU?

Are you using a NXP board? If this is no, could you please provide a schematic file?

Please measure the impedance between VDD and Vss.

Please make a visual inspection looking for solder short or open pins.

Please measure the current on the MCU.

Which is the MCU frequency?

Have a great day,
Sol

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Re: LPC4333 JET256 temperature is high when using

maggiepan — Thu, 15 Jun 2017 03:19:19 GMT

Hello,

Please see below application:

now all the external equipments have been removed when testing;
SDRAM, FRAM, SP706;
please download Schematic from below link: http://pan.baidu.com/s/1kVFUaft ;
VDD 3.28V;
Current 55mA;
No problem has been founded after checking;
Cortext-M4 204MHz; Cortext-M0 204MHz;

Please provide temperature datasheet about this chipset during operation, so that we are able to judge whether the current temperature is normal or not, thanks.

Maggie pan

www.sun-glow.com

xmrita@163.com

Re: LPC4333 JET256 temperature is high when using

Hui_Ma — Fri, 16 Jun 2017 01:04:53 GMT

Hi Maggie

Unfortunately, we doesn't have the chip core frequency with temperature coefficient data.

We just provide the power consumption with core frequency and temperature related curve:

Could you provide more detailed data about the chip temperature?

The ambient temp and the chip surface temp. How about the chip temperature rising ramp?

Thank you.

Have a great day,
Ma Hui

Re: LPC4333 JET256 temperature is high when using

maggiepan — Sun, 18 Jun 2017 01:20:39 GMT

Hello Sir,

Can you provide the register address of [FLASHTIM] bits value of Flash Accelerator Configuration for flash bank A/B? How to operate with it? We couldn’t find it as there are lots of register addresses for this chipset.

By the way, can you provide telephone contact info and engineer door-to-door service? it would be quick to solve the problem, thanks.

Best regards,

Maggie pan

www.sun-glow.com

xmrita@163.com

Re: LPC4333 JET256 temperature is high when using

Hui_Ma — Mon, 19 Jun 2017 05:52:22 GMT

Hi Maggie,

Flash Accelerator Configuration for flash bank A register (FLASHCFGA, address 0x4004 3120);

Flash Accelerator Configuration for flash bank B register (FLASHCFGB, address 0x4004 3124).

Following reset, flash accelerator functions are enabled and flash access timing is set to a default value of 16 clocks.

If customer want to modify the [FLASHTIM] value of FLASHCFGA/B register, please refer below code:

LPC_CREG->FLASHCFGA = (0xF << 12) | (0x1 << 31);

LPC_CREG->FLASHCFGB = (0xF << 12) | (0x1 << 31);

Have a great day,
Ma Hui

Re: LPC4333 JET256 temperature is high when using

maggiepan — Mon, 19 Jun 2017 06:41:27 GMT

Hello Mr. Ma hui,

thanks for your reply.

We tested and found it goes normal when the frequency is lowered to 120Mhz, thanks.

Maggie pan

www.sun-glow.com

xmrita@163.com