UPD784035YGC NEC, UPD784035YGC Datasheet - Page 64

• Manufacturer Part Number: UPD784035YGC
• Description: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: NEC

OSCILLATOR CHARACTERISTICS (T
64
Ceramic resonator or
crystal resonator
External clock
Caution When using the system clock oscillator, wiring the area enclosed with the broken line should
Resonator
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
• Do not fetch a signal from the oscillator.
wiring to a ground pattern in which a high current flows.
Recommended Circuit
V
X1
SS1
C1
HCMOS inverter
X1
A
= –40 to +85 C, V
X2
X2
C2
PD784035Y, 784036Y, 784037Y, 784038Y
Oscillator frequency (f
X1 input frequency (f
X1 input rising/falling time (t
X1 input high-/low-level width
(t
WXH
, t
DD
WXL
= +4.5 to 5.5 V, V
)
Parameter
X
XX
)
)
XR
, t
SS
XF
)
= 0 V)
MIN.
10
4
4
0
SS1
. Do not ground
MAX.
125
32
32
10
MHz
MHz
Unit
ns
ns