MB88155
■ LOCK-UP TIME
VDD
3.0 V External clock
stabilization waiting time
XIN
XPD
VIH
SEL
VIH
ENS
CKOUT
tLK (Lock-up time)
If the XPD pin is fixed at the “H” level, the maximum time after the power is turned on until the set clock signal is
output from CKOUT pin is (the stabilization wait time of input clock to XIN pin) + (the lock-up time “tLK”). For the
input clock stabilization time, check the characteristics of the resonator or oscillator used.
VDD
XIN
XPD
SEL
ENS
CKOUT
3.0 V External clock
stabilization waiting time
VIH
VIH
tLK (Lock-up time)
If the XPD pin is used for power-down control, the set clock signal is output from the CKOUT pin at most the lock-
up time “tLK” after the XPD pin goes “H” level.
(Continued)
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