UPD78320GJ-5BJ NEC, UPD78320GJ-5BJ Datasheet - Page 65
UPD78320GJ-5BJ
Manufacturer Part Number
UPD78320GJ-5BJ
Description
16/8-BIT SINGLE-CHIP MICROCONTROLLER
Manufacturer
NEC
Datasheet
1.UPD78320GJ-5BJ.pdf
(88 pages)
- Current page: 65 of 88
- Download datasheet (480Kb)
OSCILLATOR CHARACTERISTICS (T
Caution
Ceramic resonator
or
crystal resonator
External clock
Resonator
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
• Make sure that the grounding point of the oscillation circuit capacitor always has the same electrical
• Do not fetch signals from the oscillation circuit.
currents run.
potential as V
Recommended Circuit
X2
SS
C2
. Avoid grounding with a grand pattern in which very high currents run.
X1
X1
Invertor
Invertor
HCMOS
HCMOS
or
Open
X1
A
X2
X2
C1
= –10 to +70 C, V
V
SS
Oscillation frequency (f
X1 input frequency (f
X1 input rise/fall time (t
X1 input high/low level width
(t
WXH
DD
, t
= +5 V 10 %, V
WXL
)
Parameter
X
)
XX
XR
)
, t
SS
XF
= 0 V)
)
MIN.
25
8
8
0
PD78320, 78322
MAX.
16
16
20
80
MHz
MHz
Unit
ns
ns
65
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