RP2040超频出现硬故障
昨天尝试超频RP2040,超到250M随机硬故障，单行调试排查了好久都没找到原因。后面突然想着超一点点频试试，结果就没再出现这个问题了。后面发现只能超到240M再超就不行了。今天早上再来翻手册发现有个设置内核电压的函数，结构体里有几个电压，我想知道这几个电压都是安全电压吗？如果升到1.3V会不会影响芯片寿命？内核最高安全电压是多少？
enum vreg_voltage {
VREG_VOLTAGE_0_85 = 0b0110, ///< 0.85v
VREG_VOLTAGE_0_90 = 0b0111, ///< 0.90v
VREG_VOLTAGE_0_95 = 0b1000, ///< 0.95v
VREG_VOLTAGE_1_00 = 0b1001, ///< 1.00v
VREG_VOLTAGE_1_05 = 0b1010, ///< 1.05v
VREG_VOLTAGE_1_10 = 0b1011, ///< 1.10v
VREG_VOLTAGE_1_15 = 0b1100, ///< 1.15v
VREG_VOLTAGE_1_20 = 0b1101, ///< 1.20v
VREG_VOLTAGE_1_25 = 0b1110, ///< 1.25v
VREG_VOLTAGE_1_30 = 0b1111, ///< 1.30v
VREG_VOLTAGE_MIN = VREG_VOLTAGE_0_85, ///< Always the minimum possible voltage
VREG_VOLTAGE_DEFAULT = VREG_VOLTAGE_1_10,///< Default voltage on power up.
VREG_VOLTAGE_MAX = VREG_VOLTAGE_1_30, ///< Always the maximum possible voltage
};
会影响的，不同芯片的超频性能也有差异。
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