參數(shù)資料
型號： SAH-XC2220L-20F66V
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQCC48
封裝： 0.50 MM PITCH, GREEN, PLASTIC, VQFN-48
文件頁數(shù)： 101/112頁
文件大小： 3122K
代理商： SAH-XC2220L-20F66V
XC2220L, XC2224L
XC2000 Family / Econo Line
Electrical Parameters
PRELIMINARY
Data Sheet
85
V1.0, 2010-12
4.6.2.2
Wakeup Clock
When wakeup operation is selected (SYSCON0.CLKSEL = 00B), the system clock is
derived from the low-frequency wakeup clock source:
f
SYS = fWU.
In this mode, a basic functionality can be maintained without requiring an external clock
source and while minimizing the power consumption.
4.6.2.3
Selecting and Changing the Operating Frequency
When selecting a clock source and the clock generation method, the required
parameters must be carefully written to the respective bit fields, to avoid unintended
intermediate states.
Many applications change the frequency of the system clock (
f
SYS) during operation in
order to optimize system performance and power consumption. Changing the operating
frequency also changes the switching currents, which influences the power supply.
To ensure proper operation of the on-chip EVRs while they generate the core voltage,
the operating frequency shall only be changed in certain steps. This prevents overshoots
and undershoots of the supply voltage.
Table 26
System PLL Parameters
Parameter
Symbol
Values
Unit Note /
Test Condition
Min.
Typ.
Max.
VCO output frequency
f
VCO CC
48
112
MHz
VCOSEL= 00b
;
VCOmode=con
trolled
38
MHz
VCOSEL= 00b
;
VCOmode=fre
e running
96
160
MHz
VCOSEL= 01b
;
VCOmode=con
trolled
76
MHz
VCOSEL= 01b
;
VCOmode=fre
e running
相關(guān)PDF資料
PDF描述
SAH-XC2224L-12F80V 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQCC48
SAK-XC2220L-12F80V 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQCC48
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