- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄25624 > MQ80C52EXXX-25:R (ATMEL CORP) 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44 PDF資料下載
參數(shù)資料
| 型號： | MQ80C52EXXX-25:R |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44 |
| 封裝： | CERAMIC, QFP-44 |
| 文件頁數(shù)： | 37/83頁 |
| 文件大?。?/td> | 8336K |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁
34
8021G–AVR–03/11
ATmega329P/3290P
8.10.1
Switching Time
When switching between prescaler settings, the System Clock Prescaler ensures that no
glitches occur in the clock system and that no intermediate frequency is higher than neither the
clock frequency corresponding to the previous setting, nor the clock frequency corresponding to
the new setting.
The ripple counter that implements the prescaler runs at the frequency of the undivided clock,
which may be faster than the CPU’s clock frequency. Hence, it is not possible to determine the
state of the prescaler – even if it were readable, and the exact time it takes to switch from one
clock division to another cannot be exactly predicted.
From the time the CLKPS values are written, it takes between T1 + T2 and T1 + 2*T2 before the
new clock frequency is active. In this interval, 2 active clock edges are produced. Here, T1 is the
previous clock period, and T2 is the period corresponding to the new prescaler setting.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MR80C32-12P883 | 8-BIT, 12 MHz, MICROCONTROLLER, CQCC44 |
| MC80C32-36SHXXX | 8-BIT, 36 MHz, MICROCONTROLLER, CDIP40 |
| MQ80C32-20:RD | 8-BIT, 20 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C52TXXX-16SHXXX:RD | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44 |
| MC80C52TXXX-12 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MQ82370-20 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MQ8238020 | 制造商:Intel 功能描述:CONTROLLER: OTHER |
| MQ82380-20 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MQ82380-20/R | 制造商:Rochester Electronics LLC 功能描述: |
| MQ82592 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。