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參數(shù)資料
| 型號： | μPD78064 |
| 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位單片機微控制器 |
| 文件頁數(shù)： | 36/68頁 |
| 文件大?。?/td> | 444K |
| 代理商： | ΜPD78064 |
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36
m
m
PD78062, 78063, 78064
Capacitance (T
A
= 25 °C, V
DD
= V
SS
= 0 V)
Input capacitance
Output capacitance
I/O capacitance
pF
pF
pF
15
15
15
C
IN
C
OUT
C
IO
f = 1 MHz
unmeasured pins
returned to 0 V.
Main System Clock Oscillator Characteristics (T
A
= –40 to +85 °C, V
DD
= 2.0 to 6.0 V)
Unit
MHz
ms
MHz
ms
MHz
ns
MAX.
5
4
5
10
30
5.0
500
Recommended
circuit
Parameter
Oscillator
frequency (f
X
)
Note1
Oscillation
stabilization time
Note2
Oscillator
frequency (f
X
)
Note1
Oscillation
stabilization time
Note2
X1 input
frequency (f
X
)
Note1
X1 input
high/low level width
(t
XH
, t
XL
)
MIN.
1
1
1.0
85
Oscillator
Ceramic
oscillator
Crystal
resonator
External clock
Notes 1.
Indicates only oscillator characteristics. Refer to
AC Characteristics
for instruction execution time.
2.
Time required to stabilize oscillation after reset or STOP mode release.
Cautions 1.
When using the main system clock oscillator, wiring in 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 high current.
The potential of the oscillator capacitor ground should be the same as V
SS
.
Do not ground it to the ground pattern in which a high current flows.
Do not fetch a signal from the oscillator.
2.
If the main system clock oscillator is operated by the subsystem clock when the main system clock
is stopped, reswitching to the main system clock should be performed after the stable oscillation time
has been obtained by the program.
TYP.
X1
X2
m
PD74HCU04
Test conditions
V
DD
= Oscillator
voltage range
After V
DD
reaches oscil-
lator voltage range MIN.
V
DD
= 4.5 to 6.0 V
X1
X2
IC
C1
C2
Parameter
Symbol
Test Conditions
MIN.
TYP.
MAX.
Unit
X1
X2
IC
C1
C2
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