实验版上焊了8芯座 ，引出针脚 ，连接 ICD2 ，烧写时出现
Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to MPLAB ICD 2
ICDWarn0020: Invalid target device id (expected=0x7E, read=0x1FF)
ICDWarn0044: Target has an invalid calibration memory value (0x3FFF). Continue?
...Reading ICD Product ID
Running ICD Self Test
... Failed Self Test. See ICD2 Settings (Programmer->Settings) (status tab) for details.
MPLAB ICD 2 ready for next operation
偶尔也会出现
Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to MPLAB ICD 2
ICDWarn0020: Invalid target device id (expected=0x7E, read=0x0)
ICDWarn0044: Target has an invalid calibration memory value (0x0). Continue?
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
用的icd2的电源
烧不进 不知原因
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