1.MSP430的复位信号有两种:上电复位信号(POR)和上电清除信号(PUC)。a power-on reset (POR) and a power-up clear (PUC) signal.
从图中可以看出:
• Powering up the device
• A low signal on the RST/NMI pin when configured in the reset mode
• An SVS low condition when PORON = 1.
以上三种信号可以产生POR 信号
而PUC可以由一下信号产生
• A POR signal
/*POR 信号也可以产生PUC*/
• Watchdog timer expiration when in watchdog mode only
/*看门狗有效时,看门狗定时器溢出*/
• Watchdog timer security key violation
/*写看门狗定时器安全码出现错误*/
• A Flash memory security key violation
/*写FLASH安全码 出现错误*/
• A CPU instruction fetch from the peripheral address range 0h to 01FFh
/*cpu接受外围地址 0h to 01FFh的指令*/
2.常用复位电路
二极管的作用主要是保护元器件,释放存储在电容中的电荷。