TI中文支持网使用的是自己画的PCB， 调试环境IAR for 430 v6.5，Windows xp。
SBW2线模式，接了vcc、gnd、还有TCK和DIO这4个线，能连接到MCU但是下载不了程序，会卡在进入调试界面的读条窗口好一会
之后出现错误
Thu Aug 10, 2017 15:39:20: Using license: Standalone license – IAR Embedded Workbench for Texas Instruments MSP430Thu Aug 10, 2017 15:39:22: Firmware version 3.9.0.0Thu Aug 10, 2017 15:39:22: Interface dll version 3.9.1.2Thu Aug 10, 2017 15:39:25: Device : MSP430I204x_I203x_I202xThu Aug 10, 2017 15:39:25: External voltage : 0.1 VThu Aug 10, 2017 15:39:25: VCC voltage : 3.4 VThu Aug 10, 2017 15:39:45: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:40:14: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:40:36: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:40:55: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:41:15: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:41:41: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:42:05: Could not erase device memory : (Erase) , type=0x2, address=0x1000, length=0x100Thu Aug 10, 2017 15:42:05: Trying to initialize target failedThu Aug 10, 2017 15:42:06: Fatal error: Closing debug session Session aborted!
MCU芯片为全新样片，试了两块板都是这样
Seven Han：
换块板子确认下调试环境是否是好的，然后就是板子的问题了，测下电压，晶振等看看是否稳定。
yu xu2：
回复 Seven Han:
您好：
我看datasheet外部关于ROSC引脚说明，是否是因为我没把ROSC接到地，我使用内部晶振DCO
题外问：datasheet关于ROSC说使用外部晶振需要在ROSC与地之间加一个电阻，但是我看pin脚没有可接晶振的啊(XIN,XOUT)？
yu xu2：
回复 Seven Han:
1
灰小子：
回复 yu xu2:
Connect ROSC pin to AVSS when DCO is used in internal resistor mode
