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參數(shù)資料
| 型號(hào)： | μPD789101 |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 Bit Single Chip Microcontrollers |
| 中文描述： | 8位單片機(jī)微控制器 |
| 文件頁數(shù)： | 28/48頁 |
| 文件大?。?/td> | 218K |
| 代理商： | ΜPD789101 |
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Preliminary Product Information
28
μ
PD789101, 789102, 789104
CHARACTERISTICS OF THE MAIN SYSTEM CLOCK OSCILLATION CIRCUIT
(T
A
= -40 to +85
°
C, V
DD
= 1.8 to 5.5 V)
Resonator
Recommended
circuit
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
Ceramic
resonator
Oscillator frequency (f
X
)
Note 1
V
DD
= oscillation voltage
range
1.0
5.0
MHz
Oscillation settling time
Note 2
After V
DD
reaches MIN. of
the oscillation voltage range
4
ms
Crystal
Oscillator frequency (f
X
)
Note 1
1.0
5.0
MHz
Oscillation settling time
Note 2
V
DD
= 4.5 to 5.5 V
10
ms
30
External
clock
X1 input frequency (f
X
)
Note 1
1.0
5.0
MHz
X1 input high/low level
width (t
XH
, t
XL
)
100
500
ns
Notes 1.
Only the characteristic of the oscillation circuit is indicated. See the description of the AC characteristic
for the instruction execution time.
2.
Time required for oscillation to settle once a reset sequence ends or STOP mode is deselected.
Caution
When using the main system clock oscillation circuit, observe the following conditions for the
wiring of that section enclosed in dotted lines in the above diagrams, so as to avoid the
influence of the wiring capacitance.
Keep the wiring as short as possible.
Do not allow signal wires to cross one another.
Keep the wiring away from wires that carry a high, non-stable current.
Keep the grounding point of the capacitors at the same level as V
SS
.
Do not connect the grounding point to a grounding wire that carries a high current.
Do not extract a signal from the oscillation circuit.
X1
X2
IC
C1
C2
X1
X2
IC
C1
C2
X1
X2
PD74HCU04
μ
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| μPD789112 | 8 Bit Single Chip Microcontrollers(8 位單片微控制器) |
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