UPD77015GC NEC, UPD77015GC Datasheet - Page 35
![no-image](/images/manufacturer_photos/0/4/470/nec_sml.jpg)
UPD77015GC
Manufacturer Part Number
UPD77015GC
Description
16 bits/ Fixed-point Digital Signal Processor
Manufacturer
NEC
Datasheet
1.UPD77015GC.pdf
(60 pages)
- Current page: 35 of 60
- Download datasheet (425Kb)
Oscillator Circuit
Ceramic or crystal resonator
External clock
Cautions 1. When using system clock oscillator, wire the portion enclosed in broken lines in the figure
2. When using ceramic resonator or crystal resonator, frequency multiple rate should be
Resonator
as follows to avoid adverse influences on the wiring capacitance:
• Keep the wiring length as short as possible.
• Do not cross the wiring over the other signal lines.
• Do not route the wiring in the vicinity of lines through which a high fluctuating current
• Always keep the ground point of the capacitor of the oscillator circuit at the same
• Do not connect the power source pattern through which a high current flows.
• Do not extract signals from the oscillator.
specified to as 1 by mask option. The device does not operate in other frequency multiple
rate.
flows.
potential as GND.
NU: Not Use. Leave Open.
Recommended Circuit
External Clock
Supply
C1
X1
X1
PD77015, 77017, 77018
X2
NU
X2
C2
35
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