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求教：TMS320F28035 AD的3.3V内部电压基准精度是多少？控制电源低于3.3V时电压基准是如何保持3.3V的
1 另外您可以参考
http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/54326?Piccolo-28035-Internal-Reference-Voltage-for-ADC
2 您可以看一下
的 8.11 Internal/External Reference Voltage Selection
