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參數資料
| 型號： | TS80C58X2XXX-VIA |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數： | 37/83頁 |
| 文件大?。?/td> | 8336K |
| 代理商： | TS80C58X2XXX-VIA |
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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PDF資料 |
PDF描述 |
|---|---|
| TSC80C51CXXX-36CW | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, UUC40 |
| TSC80C51TXXX-25IW | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, UUC40 |
| TSC80C51TXXX-36IXD | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, UUC40 |
| TSC80C51TXXX-L16CW | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, UUC40 |
| TSC80C51XXX-44CWD | 8-BIT, MROM, 44 MHz, MICROCONTROLLER, UUC40 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TS80C58X2XXX-VIB | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP |
| TS80C58X2XXX-VIC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP |
| TS80C58X2XXX-VIE | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP |
| TS80C58X2YYY-LCAD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|DIP|40PIN|PLASTIC |
| TS80C58X2YYY-LCBB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|8051 CPU|CMOS|LDCC|44PIN|PLASTIC |
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