參數(shù)資料
型號: MC13224V
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA99
封裝: 9.50 X 9.50 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, LGA-99
文件頁數(shù): 37/54頁
文件大小: 490K
代理商: MC13224V
MC1322x Technical Data, Rev. 1.3
42
Freescale Semiconductor
7.7
Optional 32.768 KHz Crystal Oscillator Specifications
Figure 11. 32.768 KHz Oscillator Mode
l
Table 13. Recommended 24 MHz Crystal Specifications
Parameter
Value
Unit
Condition
Frequency
24.000000
MHz
Frequency tolerance (cut tolerance)1
1 A wider frequency tolerance may acceptable if application uses trimming at production final test.
± 10
ppm
at 25 °C
Frequency stability (temperature drift)
± 15
ppm
Over desired temperature range
Aging
± 2
ppm
max
Equivalent series resistance2
2 The higher ESR may be acceptable with lower load capacitance.
40-50
Ω
max
Load capacitance
5 - 9
pF
Shunt capacitance
<2
pF
max
Mode of oscillation
fundamental
Table 14. 32.768 Oscillator Specifications
Characteristic
Symbol
Min
Typ
Max
Unit
Crystal frequency1
32.768
KHz
Frequency tolerance @ 25 °C
± 20
ppm
Frequency tolerance over temperature2
-0.034 ±0.006ppm / (25-T)2
ppm
Y1
CRYSTAL
CL1
32.768 kHz
OSCILLATOR
OSC_IN
OSC_OUT
CL2
Feedback
MC13224V
Cstray1
Cstray2
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