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Forum Index : Microcontroller and PC projects : Delighted with RP2350 @300MHz
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| PhenixRising Guru  Joined: 07/11/2023 Location: United KingdomPosts: 857 |
I am not sure if the Pin(Temp) is something that we can rely on (?) but the value sits at ~17C. If I kick it up to 315MHz, the temp increases to ~21C These temps are pretty low, right? From the datasheet: 300MHz is perfect for my needs  Edited 2024-11-07 21:11 by PhenixRising |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6781 |
From the RP2040 Datasheet 4.9.4. Temperature Sensor The temperature sensor measures the Vbe voltage of a biased bipolar diode, connected to the fifth ADC channel (AINSEL=4). Typically, Vbe = 0.706V at 27 degrees C, with a slope of -1.721mV per degree. Therefore the temperature can be approximated as follows: T = 27 - (ADC_voltage - 0.706)/0.001721 As the Vbe and the Vbe slope can vary over the temperature range, and from device to device, some user calibration may be required if accurate measurements are required. The temperature sensor’s bias source must be enabled before use, via CS.TS_EN. This increases current consumption Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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