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參數(shù)資料
| 型號： | μPD78P058FY |
| 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)： | 32/74頁 |
| 文件大?。?/td> | 520K |
| 代理商： | ΜPD78P058FY |
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μ
PD78P058FY
32
Main System Clock Oscillator Characteristics (T
A
= –40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Resonator
Recommended
Circuit
Parameter
Test Conditions
MIN. TYP. MAX. Unit
Ceramic resonator
Oscillation frequency
(f
X
)
Note 1
V
DD
= Oscillation voltage range
1.0
5.0
MHz
Oscillation stabilization
time
Note 2
After V
DD
has reached MIN. of
oscillation voltage range
4
ms
Crystal resonator
Oscillation frequency
(f
X
)
Note 1
1.0
5.0
MHz
Oscillation stabilization
time
Note 2
V
DD
= 4.5 to 6.0 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
)
85
500
ns
Notes
1.
Only the oscillator characteristics are shown. See the AC characteristics for instruction execution times.
2.
This is the time required for oscillation to stabilize after a reset or STOP mode release.
Cautions
1. When the main system clock oscillator is used, the following should be noted concerning wiring
in the area in the figure enclosed by broken lines to prevent the influence of wiring capacitance,
etc.
The wiring should be kept as short as possible.
No other signal lines should be crossed.
Keep away from lines carrying a high fluctuating current.
The oscillator capacitor grounding point should always be at the same potential as V
SS
.
Do not connect to a ground pattern carrying a high current.
A signal should not be taken from the oscillator.
2. When the main system clock is stopped and the device is operating on the subsystem clock,
wait until the oscillation stabilization time has been secured by the program before switching
back to the main system clock.
X1
V
PP
X2
C2
C1
X1
V
PP
X2
C2
C1
X2
X1
PD74HCU04
μ
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