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參數(shù)資料
| 型號： | μPD78082(A) |
| 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(jī)微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 29/60頁 |
| 文件大?。?/td> | 302K |
| 代理商： | ΜPD78082(A) |
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29
μ
PD78081(A), 78082(A)
Electrical specifications of
μ
PD78081(A) and 78082(A) (2/11)
Main System Clock Oscillator Characteristics
(T
A
= –40 to +85
°
C, V
DD
= 1.8 to 5.5 V)
Notes 1.
Only the oscillator characteristics are shown. For the instruction execution time, refer to AC Characteristics.
2.
Time required for oscillation to stabilize after a reset or the STOP mode has been released.
Caution When using the oscillation circuit of the main system clock, wire the portion enclosed in broken lines
in the figures as follows to avoid adverse influence on the wiring capacitance:
Keep the wiring length as short as possible.
Do not cross the wiring over other signal lines.
Do not route the wiring in the vicinity of lines through which a high fluctuating current flows.
Always keep the ground point of the capacitor of the oscillation circuit at the same potential as
V
SS
.
Do not connect the ground pattern through which a high current flows.
Do not extract signals from the oscillation circuit.
Recommended
Circuit
Ceramic
Oscillation frequency
V
DD
= Oscillation voltage
1.0
5.0
MHz
resonator
(f
X
)
Note 1
range
Oscillation stabilization
After V
DD
came to MIN.
4
ms
time
Note 2
of oscillation voltage range
Crystal
Oscillation frequency
1.0
5.0
MHz
resonator
(f
X
)
Note 1
Oscillation stabilization
V
DD
= 4.5 to 5.5 V
10
ms
time
Note 2
30
External clock
X1 input frequency
1.0
5.0
MHz
(f
X
)
Note 1
X1 input high-/low-level
85
500
ns
widths (t
XH
, t
XL
)
Resonator
Parameter
Test Conditions
MIN.
TYP.
MAX.
Unit
IC
C1
X1
C2
X2
IC
C1
X1
C2
X2
X2
X1
PD74HCU04
μ
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