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參數(shù)資料
| 型號(hào)： | SG556BYB |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Mobile PentiumR Processor Application Clock Generator |
| 中文描述： | 99.8 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁(yè)數(shù)： | 7/10頁(yè) |
| 文件大小： | 62K |
| 代理商： | SG556BYB |
SG556
Mobile Pentium Processor Application Clock Generator
with SSCG, USB and Power Management Support
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07016 Rev. **
5/17/2001
Page 7 of 10
APPROVED PRODUCT
Crystal and Reference Oscillator Parameters
Min
Typ
12.00
14.31818
-
-
-
-
-
-
-
-
5
0.3Vdd
Vdd/2
-
-
-
20
-
-
Characteristic
Frequency
Tolerance
Symbol
F
o
TC
TS
TA
OM
CP
V
BIAS
Ts
CL
R1
Max
16.00
+/-100
+/- 100
5
-
Units
MHz
PPM
PPM
PPM
Conditions
Calibration Note 1
Stability (Ta -10 to +60C) Note 1
Aging (first year @ 25C) Note 1
Parallel Resonant
Capacitance of XIN and Xout pins
Mode
Pin Capacitance
DC Bias Voltage
Startup time
Load Capacitance
Effective Series
resonant
resistance
Power Dissipation
Shunt Capacitance
X1 and X2 Load
pF
V
μ
S
pF
0.7Vdd
30
-
40
Note 1
Ohms
DL
CO
CL
-
-
-
0.10
7
mW
pF
pF
Note 1
--
17
Internal crystal loading capacitors on
each pin (to ground)
For maximum accuracy, the total circuit loading capacitance should be equal to CL. This loading capacitance is the
effective capacitance across the crystal pins and includes the device pin capacitance (CP) in parallel with any circuit
traces, the clock generator and any onboard discrete load capacitors.
Budgeting Calculations
Typical trace capacitance, (< half inch) is 4 pF, Load to the crystal is therefore 2.0 pF
Clock generator internal pin capacitance of 36 pF, Load to the crystal is therefore 18.0 pF
the total parasitic capacitance would therefore be = 20.0 pF(matching CL)
Note 1: It is recommended but not mandatory that a crystal meets these specifications.
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