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參數資料
| 型號： | 784216A |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT |
| 中文描述： | 馬鞍山集成電路 |
| 文件頁數： | 71/100頁 |
| 文件大?。?/td> | 564K |
| 代理商： | 784216A |
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Data Sheet U14121EJ2V0DS00
71
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
www.DataSheet4U.com
Subsystem Clock Oscillator Characteristics (T
A
=
40 to +85
°
C)
Resonator
Recommended Circuit
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
Oscillation frequency
(f
XT
)
32
32.768
35
kHz
4.5 V
≤
V
DD
≤
5.5 V
1.2
2
Crystal
resonator
V
SS
XT2
XT1
Oscillation
stabilization time
Note
1.8 V
≤
V
DD
< 4.5 V
10
s
XT1 input frequency
(f
XT
)
32
35
kHz
External
clock
XT2
XT1
PD74HCU04
μ
XT1 input high-/low-
level width (t
XTH
, t
XTL
)
14.3
15.6
μ
s
Note
Time required to stabilize oscillation after applying supply voltage (V
DD
).
Cautions 1. When using the subsystem clock oscillator, wire as follows in the area enclosed by the
broken lines in the above figures to avoid an adverse effect from wiring capacitance.
Keep the wiring length as short as possible.
Do not cross the wiring with other signal lines.
Do not route the wiring near a signal line through which a high fluctuating current flows.
Always make the ground point of the oscillator capacitor the same potential as V
SS
.
Do not ground the capacitor to a ground pattern through which a high current flows.
Do not fetch signals from the oscillator.
2. When the main system clock is stopped and the device is operating on the subsystem clock,
wait until the oscillation stabilization time has been secured by the program before switching
back to the main system clock.
Remark
For the resonator selection and oscillator constant, users are required to either evaluate the oscillation
themselves or apply to the resonator manufacturer for evaluation.
相關PDF資料 |
PDF描述 |
|---|---|
| 784216AY | MOS INTEGRATED CIRCUIT |
| 784217A | MOS INTEGRATED CIRCUIT |
| 784217AY | MOS INTEGRATED CIRCUIT |
| 784218AY | MOS INTEGRATED CIRCUIT |
| 7846ARPFB | 16-Bit Digital to Analog Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 784216AY | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT |
| 784217A | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT |
| 784217AY | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT |
| 784218A | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT |
| 784218AY | 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT |
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