參數(shù)資料
型號(hào)： UPD753304P
廠(chǎng)商： NEC Corp.
元件分類(lèi)： 4位微控制器
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述： 4位單片機(jī)的小型通用紅外遙控器
文件頁(yè)數(shù)： 42/56頁(yè)
文件大?。?/td> 374K
代理商： UPD753304P
42
μ
PD753304
Main System Clock Oscillation Circuit Characteristics (T
A
= –10 to +60
°
C, V
DD
= 2.5 to 5.5 V)
Oscillator
Recommended Constants
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
RC oscillation
Oscillation frequency
(f
CC
)
Note
V
DD
= 4.5 to 5.5 V
1.0
6.0
MHz
V
DD
= 2.5 to 4.5 V
1.0
5.0
MHz
Note
The oscillation frequency indicates characteristics of the oscillation circuit only. For the instruction
execution time and oscillation frequency characteristics, refer to AC Characteristics.
Caution When using the main system clock frequency circuit, wire the portion enclosed by the dotted
line in the above figure as follows to prevent adverse influence from wiring capacitance:
Keep the wiring length as short as possible.
Do not cross the wiring with any other signal lines.
Do not route the wiring in the vicinity of line through which a high alternating current flows.
Do not extract any signal from the oscillation circuit.
Subsystem Clock Oscillation Circuit Characteristics (T
A
= –10 to +60
°
C, V
DD
= 2.5 to 5.5 V)
Oscillation
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
RC oscillation
Note 1
V
DD
= 5.0 V
±
10 %
27
47
74
kHz
V
DD
= 3.0 V
±
10 %
27
47
74
kHz
Notes 1.
The subsystem clock oscillation circuit incorporates a resistor (R) and a capacitor (C), and does
not have external pins.
The oscillation frequency indicates characteristics of the oscillation circuit only. For the instruction
execution time and oscillation frequency characteristics, refer to
AC Characteristics
.
2.
Oscillation frequency
(f
CT
)
Note 2
CL1
CL2
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