YMU759 Datasheet, PDF (9/18 Pages) List of Unclassifed Manufacturers – SYNTHESIS LSI FOR PORTABLE TELEPHONE

YMU759
AC characteristics
/RST, CLKI
Item
/RST active “L” pulse width
CLKI frequency
Symbol
TRSTW
1 / Tfreq
CLKI rise time / fall time
Tr / Tf
CLKI duty
Th/Tfreq
Note: T_OP=-20 ~ 85°C, VDD=3.0±0.3 V, Capacitor load=50 pF.
Input hardware reset at the time VDD is turned on.
VDD
/RST
CLKI
VIL= 0.2*VDD
TRSTW
Min.
1024
2
30
Typ.
Max. Unit
× CLKI
20
MHz
30
ns
50
70
%
VIH= 0.7*VDD
CLKI
Tr
1024 clocks or more are needed.
Th
Tf
Tfreq
VIH= 0.7*DVDD
VIL= 0.2*DVDD
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