:::
Browsing this Thread:
1 Anonymous Users
|
Re: 用ICD2來Debug/Program PIC18元件時，有關PLL設定的問題
|
||||
|---|---|---|---|---|
|
版主
 
|
簡單的說明就是；
ICD2燒錄時，有修改 PLL x4 的動作時，必須將Target Board的電源重開後，PLL 電路才會正常啟動此時才會有4倍頻的效果。但這些是指用Configuration word直接用燒錄方式設定的元件例如18F452,18F458...等。 Microchip還有一些PIC18Fxxxx的元件是可以採用軟體設定方式來啟動內部PLL的4倍頻，這些元件不用關電重開例如PIC18C801, 18F4620...等
發表於: 2004/6/4 10:53
|
|||
|
||||
|
用ICD2來Debug/Program PIC18元件時，有關PLL設定的問題
|
||||
|---|---|---|---|---|
|
版主
|
從MPLAB-IDE V6.x版中的Help>Topics>...抓下來的資料：
Care should be taken when programming the PLL. The pLL only changes when power is first applied to the chip. If you are programming the PLL for the first time, remove power from the PIC18FXXXX part after programming and reapply for the PLL to be enabled. If you are reprogramming the device from PLL mode to another mode, first reprogram with PLL off, then remove power and reapply.
發表於: 2004/6/3 14:52
|
|||
|
||||
You can view topic.
你 不可以 發起新主題
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
You cannot use topic type.
You cannot use HTML syntax.
You cannot use signature.
You cannot create PDF files.
You cannot get print page.
