参数资料
型号: 784215AY
厂商: NEC Corp.
英文描述: MOS INTEGRATED CIRCUIT
中文描述: 马鞍山集成电路
文件页数: 38/100页
文件大小: 564K
代理商: 784215AY
Data Sheet U14121EJ2V0DS00
38
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
Figure 7-3. Example of Using Main System Clock Oscillator
Figure 7-4. Example of Using Subsystem Clock Oscillator
Caution
When using the main system clock and subsystem clock oscillator, wire as follows in the area
enclosed by the broken lines in Figures 7-3 and 7-4 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.
Note that the subsystem clock oscillator has a low amplification factor to reduce the current
consumption.
External
clock
X2
X1
PD74HCU04
μ
V
SS
X2
X1
Crystal resonator
or
ceramic resonator
(1) Crystal/ceramic oscillation
(2) External clock
32.768
kHz
V
SS
XT2
XT1
XT2
XT1
External
clock
PD74HCU04
μ
(1) Crystal oscillation
(2) External clock
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784216A 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784216AY 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784217A 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784217AY 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT
784218A 制造商:NEC 制造商全称:NEC 功能描述:MOS INTEGRATED CIRCUIT