![]() wSmall configuration and light weight The ceramic resonator is half the size of popular quartz crystals. Compared with these, it is 105/C at 20 to +80C for ceramic resonators. I have attached the controller portion of the schematic.Īppreciate any comments from anyone having experience with this, Thank you. The temperature coefficient of quartz crystal is 106/C maximum and approximately 103 to 104/C for LC or RC oscillation circuits. There does seem to be a bit of a discrepency in the data sheet because going by the frequency (16MHZ) clk 3:1 should be 111, however there is a note that for ceramic resonators this should be different. With or without the resistor on full swing, I see a dc voltage of about 2.2 volts on x2 and 1.5 on x1 in full swing, in low power the voltage is somewhat lower on both pins. I have also tried putting a 1M resistor across the x2 and x1 terminals to no avail. The options I have tried so far with the low fuse setting are:ĬC - low power oscillator slow rising vccĭ7 - full swing oscillator slow rising vcc. While the Raspberry Pi Pico is gaining most of the attention as a maker or prototyping board, the RP2040 (the brains on the Pico) can be used just like any other microcontroller. I can download code to it via the 6 pin programmer connector (have not put bootloader in yet), and I can set the fuses. The RP2040 is a slick, new microcontroller from Raspberry Pi. Hello all, I have an atmega328-au processor on a custom board that is intended to run arduino sketches. This particular resonator has capacitors integrated into the part. Hardware Design with the RP2040 Part 1: Schematic By ShawnHymel. The resonator I am using is cstce16m0v53-r0. But nothing I try will get this ceramic resonator to work. I can enable the internal oscillator with clock out enabled and see a frequency output so it seems the chip is ok. After reading the datasheet, I tried several recommended fuse settings for a ceramic resonator but none of them work. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a. I have an atmega328-au processor on a custom board that is intended to run arduino sketches.
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