SM1125_06 Datasheet, PDF (4/13 Pages) Nippon Precision Circuits Inc – Multimelody IC for Pagers

SM1125 series
AC Characteristics
Unless otherwise noted Ta = −20 to 70°C, V_SS = 0V, V_DD = 1.5 to 3.6V
Parameter
OSC pulse cycle
OSC HIGH-level pulsewidth
OSC LOW-level pulsewidth
OSC pulse rise time
OSC pulse fall time
SC pulse cycle
SC HIGH-level pulsewidth
SC LOW-level pulsewidth
SC pulse rise time
SC pulse fall time
SI-SC setup time
SI-SC hold time
Symbol
Condition
min
t _OSC
5.0
t _OWH
2.0
t _OWL
“OSC input pulse (External clock
input option)” timing
2.0
t _Or
–
t _Of
–
t _SC
5.0
t _SWH
2.0
t _SWL
“SC input pulse” timing
2.0
t _Sr
–
t _Sf
–
t _DS
2.0
“SC-SI serial input pulse” timing
t _DH
2.0
OSC input pulse (External clock input option)
SC input pulse
t OWH
tOSC
t OWL
0.9VDD
0.1VDD
t Of
t SWH
t SC
t SWL
SC-SI serial input pulse
0.9VDD
0.1VDD
t Sf
SC
t DS
t DH
SI
Rating
Unit
typ
max
–
–
µs
–
–
µs
–
–
µs
–
200
ns
–
200
ns
–
–
µs
–
–
µs
–
–
µs
–
200
ns
–
200
ns
–
–
µs
–
–
µs
VIH
0.5VDD
VIL
t Or
VIH
0.5VDD
VIL
t Sr
VIH
0.5VDD
VIL
VIH
0.5VDD
VIL
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