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參數(shù)資料
| 型號： | μPD78F4216Y |
| 廠商： | NEC Corp. |
| 英文描述： | 8/16 Bit RISC Microcontrollers(8/16位RISC微控制器) |
| 中文描述： | 8 / 16位RISC微控制器（8 / 16位的RISC微控制器） |
| 文件頁數(shù)： | 23/56頁 |
| 文件大小： | 407K |
| 代理商： | ΜPD78F4216Y |
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μ
PD78F4216Y
23
Preliminary Data Sheet U11824EJ1V0DS00
Main System Clock Oscillator Characteristics (T
A
= –10 to +60
°
C)
Resonator Recommended Circuit
Parameter
Test Conditions
MIN.
TYP.
MAX.
Unit
Ceramic
resonator
or crystal
resonator
Oscillation
frequency (f
X
)
4.5 V
≤
V
DD
≤
5.5 V
2
12.5
MHz
2.7 V
≤
V
DD
< 4.5 V
2
6.25
External
clock
X1 input frequency
(f
X
)
4.5 V
≤
V
DD
≤
5.5 V
2
25
MHz
2.7 V
≤
V
DD
< 4.5 V
2
12.5
X1 input high/low-
level width (t
WXH
, t
WXL
)
35
250
ns
X1 input rise/
fall time (t
XR
, t
XF
)
4.5 V
≤
V
DD
≤
5.5 V
0
5
ns
2.7 V
≤
V
DD
< 4.5 V
0
10
Caution
When using the main system 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 the 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 in a ground pattern in which a high current flows.
Do not fetch signals from the oscillator.
X2
X1 V
SS
X2
X1
PD74HCU04
μ
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