参数资料
型号: TSC80C31-16KAD
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 16 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 37/83页
文件大小: 8336K
代理商: TSC80C31-16KAD
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.
相关PDF资料
PDF描述
TSC80C31-40JDB 8-BIT, 40 MHz, MICROCONTROLLER, PQFP44
TSC80C31-12LFR 8-BIT, 12 MHz, MICROCONTROLLER, PQFP44
TSC80C31-20LFD 8-BIT, 20 MHz, MICROCONTROLLER, PQFP44
TSC80C31-36KB 8-BIT, 36 MHz, MICROCONTROLLER, PQCC44
TS87C51RD2-VLMR 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
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