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參數(shù)資料
| 型號： | MPC9817 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Clock Generator for PowerQUICC and PowerPC Microprocessors and Microcontrollers |
| 中文描述： | 時鐘發(fā)生器的PowerQUICC和PowerPC微處理器和微控制器 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 97K |
| 代理商： | MPC9817 |
Advanced Clock Drivers Devices
Freescale Semiconductor
3
MPC9817
Figure 2. MPC9817 20-Lead SSOP Package Pinout
(Top View)
MPC9817 OPERATION
Crystal Oscillator
The MPC9817 features a fully integrated Pierce oscillator
to minimize system implementation costs. Other than the
addition of a 25-MHz crystal, no external components are
required.The crystal selection should be: 25 MHz, parallel
resonant type with a load specification of C
L
= 10 pF. Crystals
with a load specification of C
L
= 20 pF may be used, however,
the reference frequency may be higher than the specified
25 MHz. Externally supplied capacitors on both the XTAL_IN
and XTAL_OUT pins may be used to trim the frequency as
desired.
The crystal should be located as close to the MPC9817
XTAL_IN and XTAL_OUT pins as possible to avoid any board
level parasitic.
Power Supply Bypassing
The MPC9817 should have all V
DD
pins bypassed with
0.01 capacitors and a minimum of one 1.0 capacitor for the
overall package. All capacitors should be located as close to
the SSOP pins as possible.
External Clock Source
An external reference source of 25 MHz may be applied to
the XTAL_IN pin. In this mode of operation, the XTAL_OUT
pin should be left floating.
XTAL_IN
XTAL_OUT
FSEL0
V
DD
FSEL1
QREF2
GND
QREF1
QREF0
V
DD
V
DD
QA4
QA3
GND
QA2
QA1
V
DD
QA0
MR/OE
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Table 3. Crystal Specifications
Parameter
Value
Crystal Cut
Fundamental AT Cut
Resonance
Parallel Resonance
Shunt Capacitance (C
L
)
5–7 pF
Load Capacitance (C
O
)
10 pF
Equivalent Series Resistance (ESR)
20–60
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC9817EN | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 FSL 1-5 PwrQUICC/Pwr PC Clk Gen, RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9817ENR2 | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 FSL 1-5 PwrQUICC/Pwr PC Clk Gen, RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9817SD | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 FSL 1-5 PwrQUICC/Pwr PC Clk Gen, RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9817SDR2 | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Generator Single 20-Pin QSOP T/R 制造商:Integrated Device Technology Inc 功能描述:FSL 1-5 PwrQUICC/Pwr PC Clk Gen, |
| MPC9819EN | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
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