B
參數(shù)資料
型號: SAF-C161S-L25M AA
廠商: Infineon Technologies
文件頁數(shù): 47/75頁
文件大?。?/td> 0K
描述: IC MCU 16BIT ROM/LESS MQFP-80-7
標準包裝: 1
系列: C16xx
核心處理器: C166
芯體尺寸: 16-位
速度: 25MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 63
程序存儲器類型: ROMless
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 80-QFP
包裝: 剪切帶 (CT)
產(chǎn)品目錄頁面: 736 (CN2011-ZH PDF)
其它名稱: SAF-C161S-L25MAACT
SAF-C161S-L25MAACT-ND
SAF-C161S-L25MAAINCT
C161S
Timing Characteristics
Data Sheet
47
V1.0, 2003-11
Direct Drive
When direct drive is configured (CLKCFG = 011
B) the on-chip phase locked loop is
disabled and the CPU clock is directly driven from the internal oscillator with the input
clock signal.
The frequency of
f
CPU directly follows the frequency of fOSC so the high and low time of
f
CPU (i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
f
OSC.
The timings listed below that refer to TCLs therefore must be calculated using the
minimum TCL that is possible under the respective circumstances. This minimum value
can be calculated via the following formula:
TCL
min = 1/fOSC × DCmin (DC = duty cycle)
(2)
For two consecutive TCLs the deviation caused by the duty cycle of
f
OSC is compensated
so the duration of 2TCL is always 1/
f
OSC. The minimum value TCLmin therefore has to be
used only once for timings that require an odd number of TCLs (1, 3, …). Timings that
require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/
f
OSC.
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