参数资料
型号: SAK-XC2236N-24F66L
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP64
封装: 0.50 MM PITCH, GREEN, PLASTIC, LQFP-64
文件页数: 99/110页
文件大小: 1601K
代理商: SAK-XC2236N-24F66L
XC2232N, XC2234N, XC2236N, XC2238N
XC2000 Family / Value Line
Electrical Parameters
Data Sheet
89
V1.3, 2010-04
4.7.2.2
Wakeup Clock
When wakeup operation is selected (SYSCON0.CLKSEL = 00
B), 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.
4.7.2.3
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
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