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參數(shù)資料
型號(hào)： W91031S
廠商： WINBOND ELECTRONICS CORP
英文描述： Calling Line Identifier
中文描述： 來(lái)電線路識(shí)別
文件頁(yè)數(shù)： 13/29頁(yè)
文件大?。?/td> 274K
代理商： W91031S
Preliminary W91031
Publication Release Date: August 2000
- 13 - Revision A1
Crystal Oscillator
The operation frequency of the W91031 is 3.579545 MHz. Crystal oscillators, ceramic resonators or
other clock sources can be used. A crystal oscillator or ceramic resonator can be directly connected
to the OSCI and OSCO pins without the need for external components. If other clock sources are
used, the OSCI pin should be driven by a clock source and the OSCO pin used to drive other external
clocked devices, or left open. Figure 7-9 shows some applications.
The crystal specification is as follows:
Frequency:
Frequency tolerance:
3.579545 MHz
+/- 0.1 % (-40
°
C to +85
°
C)
Parallel
18 pF
Resonance mode:
Load capacitance:
Maximum series resistance: 150
Maximum drive level (mV):
2 mV
(a)
W ith crystal osscillator or ceram ic
(b) W ith other clock
OSCI
OSCO
3.579545 MHz
Oscillator
OSCO
OSCI
OSCO
OSCI
OSCO
W91031
W91031
W91031
OSCI
OSCO
3.579545 MHz
W91031
Figure 7-9. Some Application of Clock Driven Circuit
Bias Voltage Generator
The bias voltage generator provides a low impedance voltage source equal to V
DD
/2 and is used to
bias the gain control op-amp. The voltage source is also used for internal circuits. A 0.1
μ
F capacitor
should be placed between the VREF pin and V
SS
to reduce noise.
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W91040 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
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