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參數(shù)資料
| 型號： | μPD78P9014 |
| 廠商： | NEC Corp. |
| 英文描述： | 8 Bit Single Chip Microcontrollers(8位單片微控制器) |
| 中文描述： | 8位單片機微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 25/48頁 |
| 文件大?。?/td> | 191K |
| 代理商： | ΜPD78P9014 |
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μ
PD78P9014
25
Main System Clock Oscillation Circuit Characteristics(T
A
= –40 to +85
°
C, V
DD
= 1.8 to 5.5 V)
Resonator
Recommended Circuit
Parameter
Test Condition
MIN.
TYP. MAX. Unit
Ceramic
Oscillator frequency (fx)
Note 1
V
DD
= Oscillating voltage
1.0
5.0
MHz
resonator
range
Oscillation stabilization
time
Note 2
After V
DD
reaches oscillator
4
ms
voltage range MIN.
Crystal
Oscillating frequency (fx)
Note 1
1.0
5.0
MHz
resonator
Oscillation stabilization
V
DD
= 4.5 to 5.5 V
10
ms
time
Note 2
30
External
clock
X1 input frequency (fx)
Note 1
1.0
5.0
MHz
X1 input high/low level width
100
500
ns
(t
XH
, t
XL
)
Notes 1.
Indicates only oscillation circuit characteristics. Refer to AC characteristics for instruction execution
time.
2.
Time required to stabilize oscillation after reset or STOP mode release.
Caution When using the main system clock oscillator, wiring the area enclosed with the dotted line should
be carried out as follows to avoid an adverse effect from wiring capacitance.
· Wiring should be as short as possible.
· Wiring should not cross other signal lines.
· Wiring should not be placed close to a varying higher current.
· The potential of the oscillator capacitor ground should be the same as V
SS
.
· Do not ground wiring to a ground pattern in which a high current flows.
· Do not fetch a signal from the oscillator.
X1
X2
C1
C2
X1
X2
C1
C2
μ
PD74HCU04
X1
X2
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