參數(shù)資料
型號: UPD75P3018AGK-BE9
廠商: NEC Corp.
英文描述: LJT 46C 40#20 4#16 2#8(COAX)
中文描述: 4位單片機(jī)
文件頁數(shù): 29/64頁
文件大?。?/td> 356K
代理商: UPD75P3018AGK-BE9
PD75P3018A
35
Data Sheet U11917EJ2V0DS00
Main System Clock Oscillator Characteristics (TA = –40 to +85
°C, VDD = 1.8 to 5.5 V)
Resonator
Recommended Circuit
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
Ceramic
Oscillation frequency
1.0
6.0Note 2
MHz
resonator
(fX)Note 1
Oscillation
After VDD has
4
ms
stabilization timeNote 3
reached MIN. value
of oscillation voltage
range
Crystal
Oscillation frequency
1.0
6.0Note 2
MHz
resonator
(fX)Note 1
Oscillation
VDD = 4.5 to 5.5 V
10
ms
stabilization timeNote 3
30
External
X1 input frequency
1.0
6.0Note 2
MHz
clock
(fX)Note 1
X1 input high-/
83.3
500
ns
low-level width
(tXH, tXL)
Notes 1. The oscillation frequency and X1 input frequency shown above indicate characteristics of the oscillator only.
For the instruction execution time, refer to AC Characteristics.
2. If the oscillation frequency is 4.19 MHz < fX
≤ 6.0 MHz at 1.8 V ≤ VDD < 2.7 V, do not select processor clock control
register (PCC) = 0011. If PCC = 0011, one machine cycle is less than 0.95
s, falling short of the rated value
of 0.95
s.
3. The oscillation stabilization time is the time required for oscillation to be stabilized after VDD has been applied
or STOP mode has been released.
Caution
When using the main system clock oscillator, wire the portion enclosed in the broken line in the above
figure as follows to prevent adverse influence due to wiring capacitance:
Keep the wiring length as short as possible.
Do not cross the wiring with other signal lines.
Do not route the wiring in the vicinity of a line through which a high alternating current flows.
Always keep the ground point of the capacitor of the oscillator at the same potential as VDD.
Do not ground to a power supply pattern through which a high current flows.
Do not extract signals from the oscillator.
Remark
For the resonator selection and oscillator constant, customers are requested to either evaluate the oscillation
themselves or apply to the resonator manufacturer for evaluation.
X1
X2
C1
C2
VDD
X1
X2
C1
C2
VDD
X1
X2
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