參數(shù)資料
型號(hào): UPD78322GJ-XXX-5BJ
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP74
封裝: 20 X 20 MM, PLASTIC, QFP-74
文件頁數(shù): 64/90頁
文件大?。?/td> 649K
代理商: UPD78322GJ-XXX-5BJ
65
PD78320, 78322
OSCILLATOR CHARACTERISTICS (TA = –10 to +70
°C, VDD = +5 V ±10 %, VSS = 0 V)
Resonator
Ceramic resonator
or
crystal resonator
External clock
Parameter
Oscillation frequency (fXX)
X1 input frequency (fX)
X1 input rise/fall time (tXR, tXF)
X1 input high/low level width
(tWXH , tWXL)
MIN.
8
0
25
Unit
MHz
ns
MAX.
16
20
80
Recommended Circuit
X1
X2
HCMOS
Invertor
X1
X2
HCMOS
Invertor
Open
or
Caution
When using the system clock oscillation circuit, wire the part encircled in the dotted line in the following
manner to avoid the influence of the wiring capacity, etc.
Make the wiring as short as possible.
Avoid intersecting other signal conductors. Avoid approaching lines in which very high fluctuating
currents run.
Make sure that the grounding point of the oscillation circuit capacitor always has the same electrical
potential as VSS. Avoid grounding with a grand pattern in which very high currents run.
Do not fetch signals from the oscillation circuit.
X1
X2
C1
C2
VSS
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