UPD720114 查看數據表（PDF） - NEC => Renesas Technology
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UPD720114 Datasheet PDF : 32 Pages
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μPD720114
AC Characteristics (VDD33 = 3.14 to 3.46 V, TA = 0 to +70 °C)
Pin capacitance
Parameter
Input capacitance
Output capacitance
I/O capacitance
Symbol
CI
CO
CIO
Condition
VDD = 0 V, TA = 25 °C
fC = 1 MHz
Unmeasured pins returned to 0 V
Min.
Max.
Unit
6
pF
6
pF
6
pF
System Clock Ratings
Parameter
Clock frequency
Clock Duty cycle
Symbol
fCLK
Condition
Crystal
tDUTY
Min.
−500
ppm
40
Typ.
30
50
Max.
+500
ppm
60
Unit
MHz
%
Remarks 1. Recommended accuracy of clock frequency is ± 100 ppm.
2. Required accuracy of X’tal is including initial frequency accuracy, the spread of X’tal capacitor
loading, supply voltage, temperature, and aging, etc.
System Reset Timing
Parameter
Reset active time (Figure 2-6)
Symbol
trst
Conditions
Min.
Max.
Unit
5
μs
SYSRSTB
Figure 2-6. System Reset Timing
trst
16
Data Sheet S17462EJ4V0DS
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