參數(shù)資料
型號: UPD784224GK
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16/8-BIT單晶片微控制器
文件頁數(shù): 32/92頁
文件大?。?/td> 687K
代理商: UPD784224GK
32
μ
PD784224, 784225, 784224Y, 784225Y
Data Sheet U12376EJ1V0DS00
Figure 7-3. Example of Using Main System Clock Oscillator
External
clock
X2
X1
PD74HCU04
μ
V
SS
X2
X1
Crystal resorator
or
ceramic resonator
(1) Crystal/ceramic oscillation
(2) External clock
V
SS1
Figure 7-4. Example of Using Subsystem Clock Oscillator
32.768
kHz
V
SS
XT2
XT1
XT2
XT1
External
clock
PD74HCU04
μ
(1) Crystal oscillation
(2) External clock
V
SS1
Caution
When using the main system clock and subsystem clock oscillator, wire the dotted portions in
Figures 7-3 and 7-4 as follows to avoid adverse influence 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 in the vicinity of lines through which a high alternating current flows.
Always keep the potential at the ground point of the capacitor in the oscillator the same as
V
SS1
. Do not ground to a ground pattern through which a high current flows.
Do not extract signals from the oscillator.
Note that the subsystem clock oscillator has a low amplification factor to reduce the current
consumption.
相關(guān)PDF資料
PDF描述
UPD784224Y 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784225 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784225Y 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224YGK 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD78C10AGF-3BE MS27467T25B61P
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