upd720112 Renesas Electronics Corporation., upd720112 Datasheet - Page 16

• Manufacturer Part Number: upd720112
• Description: Usb 2.0 Hub Controller
• Manufacturer: Renesas Electronics Corporation.

System Clock Ratings
AC Characteristics (V
System Reset Timing
16
Reset active time (Figure 2-6)
Clock frequency
Clock Duty cycle
Remarks 1. Recommended accuracy of clock frequency is ± 100 ppm.
2. Required accuracy of X’tal or oscillator block is including initial frequency accuracy, the spread of
Parameter
Parameter
X’tal capacitor loading, supply voltage, temperature, and aging, etc.
SYSRSTB
DD
= 3.14 to 3.46 V, T
Figure 2-6. System Reset Timing
Symbol
t
t
f
rst
DUTY
A
Symbol
CLK
= 0 to +70°C)
Data Sheet S16616EJ3V0DS
X’tal
Oscillator block
Condition
t
rst
Conditions
−500
−500
MIN.
ppm
ppm
40
TYP.
MIN.
30
30
50
5
MAX.
MAX.
+500
+500
ppm
ppm
60
µ
PD720112
Unit
MHz
MHz
µ
Unit
s
%