參數(shù)資料
型號: MB91F669PMC
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, 0.50 MM, PLASTIC, LQFP-64
文件頁數(shù): 95/104頁
文件大?。?/td> 3106K
代理商: MB91F669PMC
MB91665 Series
90
DS07-16916-2E
(Continued)
*2 : The current when the CPU is in stop mode and the A/D converter is not operating.
*3 : Compare time = {(CT
1) 10 4} peripheral clock (PCLK) period. (CT indicates compare time setting bits.)
The condition of the minimum compare time is when CT
1 and PCLK 33 MHz.
*4 : There are no AN10 and AN11 in MB91F668.
The output impedance of the external circuit connected to the analog input affects the sampling time of the A/D
converter. Design the output impedance of the output circuit such that the required sampling time is less than the
value of TS calculated from the following equation.
(Equation 1) Ts
(Rin Rext) Cin 7
Ts
: Sampling time
Rin
: Input resistance of A/D
5.3 k
Cin
: Input capacitance of A/D
8.5 pF
Rext
: Output impedance of external circuit
If the sampling time is set as 600 ns,
600 ns
(5.3 k Rext) 8.5 pF 7
Rext 4.8 k
And the impedance of the external circuit therefore needs to be 4.8 k
or less.
Rin
Cin
Rext
Analog
signal source
Comparator
Rin
Cin
Approx. 5.3 k
Approx. 8.5 pF
AN0 to AN11
Analog input pin
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