Mega16 has built-in RC oscillator circuit, which can generate oscillation frequency of 1M, 2M, 4M, 8M. However, the built-in RC oscillator is after all, so in some occasions with higher requirements, such as when communicating with RS232 and a more accurate baud rate is required, it is recommended to use an external crystal oscillator circuit.
In the early 90S series, both ends of the crystal oscillator need to be connected to capacitors of about 22pF. In actual use of the Mega series, these two small capacitors can also work normally. However, for the standardization of the circuit, we still recommend connecting them.
Important note: In actual application, if you do not need a very high frequency accuracy, you can use the internal RC oscillation, which means that this part does not require any peripheral components.
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Recommended ReadingLatest update time:2024-11-23 18:40
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