参数资料
型号: DDP3315CQA
厂商: MICRONAS SEMICONDUCTOR HOLDING AG
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封装: PLASTIC, QFP-80
文件页数: 47/62页
文件大小: 1746K
代理商: DDP3315CQA
ADVANCE INFORMATION
Micronas
51
4.6.3. Recommended Crystal Characteristics
Symbol
Parameter
Pin Name
Min.
Typ.
Max.
Unit
fP
Parallel Resonance Frequency
@ CL =16pF
XTAL1
XTAL2
-5
-MHz
RR
Series Resonance Resistance
@CL =16pF, fP = 5 MHz
--150
C0
Shunt (Parallel) Capacitance
-
6
pF
CLext
(see Note!)
External Load Capacitances
(from both crystal pins con-
nected to GNDD)
-27
-
pF
Note:External capacitors at each crystal pin to ground are required. They are necessary to tune the effective load
capacitance (including the capacitance of the printed circuit board and the IC package) to the required load
capacitance CL of the crystal. A higher capacitance will result in a lower clock frequency. The exact value of the
matching capacitor should be determined in the actual application (PCB layout).
CLext =2 (CL CPCB CPACK)
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