參數資料
型號: UPD17244MC-xxx-5A4
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS
中文描述: 4位單片微控制器的小型通用兩用紅外遙控遞質
文件頁數: 90/102頁
文件大?。?/td> 461K
代理商: UPD17244MC-XXX-5A4
90
Data Sheet U15002EJ1V0DS
μ
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
System Clock Oscillator Characteristics (T
A
=
40 to +85
°
C, V
DD
= 2.0 to 3.6 V)
Resonator
Recommended
Constants
Item
Conditions
MIN.
TYP.
MAX.
Unit
Ceramic
resonator
Oscillation frequency
(f
X
)
Note 1
1.0
4.0
8.0
MHz
Oscillation
stabilization time
Note 2
After V
DD
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 V
DD
application or
STOP mode release.
Caution When using the system clock oscillator, wire as follows in the area enclosed by the dotted lines
in the above figure, to avoid an adverse effect from wiring capacitance.
Keep the wiring length as short as possible.
Do not cross the wiring with other signal lines. Do not route the wiring near a signal line
through which a large current flows.
Always make the ground point of the oscillator capacitor the same potential as GND. Do not
ground the capacitor to a ground pattern through which a large current flows.
Do not fetch signals from the oscillator.
X
IN
X
OUT
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