CF5741AA Datasheet, PDF (4/7 Pages) Nippon Precision Circuits Inc – Analog Clock CMOS IC

CF5741 series
FUNCTIONAL DESCRIPTION
Motor Output
Stepping motor drive type
tPW
OUT1
(Active High)
tPW
OUT2
(Active High)
tCY
1sec
tCY
1sec
tCY : Needle period
tPW : Pulse width
Sweeping motor drive type
OUT1
OUT2
tCY
125msec
tCY
125msec
tCY : Needle period
tPW : Pulse width
Input Debounce Function (AI ,RST/TC)
Setting bouncing delay time prevents the circuit from the erroneous operation by AI and RST/TC input
bouncing.
t_ON < 62.5 msec : Alarm and reset input is ignored.
62.5 ≤ t_ON ≤ 125 msec : Alarm and reset input is ignored or accepted.
t_ON > 125 msec : Alarm and reset input is accepted.
tON
AI , RST/TC
(Active Low)
NIPPON PRECISION CIRCUITS—4