PD17P246_15 Datasheet, PDF (21/34 Pages) Renesas Technology Corp – PD17P246_15 FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROLLER

µPD17P246
System Clock Oscillator Characteristics (TA = –40 to +85 °C, VDD = 2.2 to 3.6 V)
Resonator
Ceramic
resonator
Recommended
Constants
XIN
XOUT
Item
Oscillation frequency
(fX)^{Note 1}
Conditions
MIN. TYP. MAX. Unit
1.0 4.0 8.0 MHz
Oscillation
stabilization time^{Note 2}
After VDD reached MIN.
in oscillation voltage
range
4
ms
Notes 1. The oscillation frequency only indicates the oscillator characteristics.
2. The oscillation stabilization time is necessary for oscillation to be stabilized after VDD application or
STOP mode release.
Caution To use a system clock oscillator, perform the wiring in the area enclosed by the dotted line in
the above figure as follows, to avoid adverse wiring capacitance influences:
• Keep wiring length as short as possible.
• Do not cross a signal line with some other signal lines. Do not route the wiring in the vicinity
of lines through which a large current flows.
• Always keep the oscillator capacitor ground at the same potential as GND. Do not ground the
capacitor to a ground pattern, through which a large current flows.
• Do not extract signals from the oscillator.
Data Sheet U15215EJ1V0DS
19