參數(shù)資料
型號: mPD784035
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 16/8-BIT單片機
文件頁數(shù): 59/90頁
文件大?。?/td> 377K
代理商: MPD784035
μ
PD784031
59
OSCILLATOR CHARACTERISTICS
(T
A
= -40 to +85
°
C, V
DD
= +4.5 to 5.5 V, V
SS
= 0 V)
Caution When using the system clock generator, run wires in the portion surrounded by broken lines
according to the following rules to avoid effects such as stray capacitance:
Minimize the wiring.
Never cause the wires to cross other signal lines.
Never cause the wires to run near a line carrying a large varying current.
Cause the grounding point of the capacitor of the oscillator circuit to have the same potential
as V
SS1
. Never connect the capacitor to a ground pattern carrying a large current.
Never extract a signal from the oscillator.
Resonator
Ceramic resonator
or crystal
External clock
Recommended circuit
MIN.
4
4
0
10
MAX.
32
32
10
125
Unit
MHz
MHz
ns
ns
X1
X2
HCMOS
inverter
Parameter
Oscillator frequency (f
XX
)
X1 input frequency (f
X
)
X1 input rise and fall times
(t
XR
, t
XF
)
X1 input high-level and low-
level widths (t
WXH
, t
WXL
)
V
SS1
X1
X2
C2
C1
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