temperature sensor

ianbenton — Wed, 13 Jun 2018 12:40:58 GMT

A while ago https://community.nxp.com/message/969158 you told me that the WRAPEN field doesn't exist.

So, on page 491 of the LPC15 manual, it says

"If the WRAPEN field is 0x2 the temperature sensor voltage is also output on the ADCn_0 pin"

In the absence of the WRAPEN field, would I find the temperature sensor voltage on the ADC pin, or not?

And presumably, it would only be there if the relevant bit in PINENABLE was set?

Re: temperature sensor

kerryzhou — Thu, 14 Jun 2018 08:46:28 GMT

Hi Ian,

Just as I have told you, WRAPEN is just for the internal usage, customer can't use it.

Temperature sensor is connect to the ADC from internal, so I don't think you can test the temperature sensor voltage on the ADC pin.

Please also check this register:

When you select the temperature to channel0, it won't select the ADCn_0 pin, so actually, to customer, there has no output pin for internal temperature sensor.

Wish it helps you!

Have a great day,
Kerry

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temperature sensor

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