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參數(shù)資料
| 型號： | μPD789800 |
| 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)： | 33/48頁 |
| 文件大?。?/td> | 266K |
| 代理商： | ΜPD789800 |
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33
μ
PD789800
CHARACTERISTICS OF THE SYSTEM CLOCK OSCILLATION CIRCUIT
(T
A
= -40
°
C to +85
°
C, V
DD
= 4.0 to 5.5 V)
Resonator
Recommended
circuit
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
Oscillator frequency (f
X
)
Note 1
6.0
6.0
6.0
MHz
Crystal
Oscillation settling time
Note 2
10
ms
X1 input frequency (f
X
)
Note 1
6.0
6.0
6.0
MHz
External
clock
X1 input high/low level
width (t
XH
, t
XL
)
71
83
ns
Notes 1.
Only the characteristics of the oscillation circuit are indicated. See the description of the AC
characteristics for the instruction execution time.
2.
Time required for oscillation to settle once a reset sequence ends or STOP mode is deselected. Use a
resonator that can settle oscillation before the oscillation settling time expires.
Caution
When using the 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
SS0
.
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
OPEN
X2
X1
IC
C2
C1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PD78F0134 | 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers |
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| PD78F0134(A1) | 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers |
| PD78F0134A | 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers |
| PD78F0134A1 | 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers |
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