
LC85632
Figure 8 Operating State Transitions 3: Alarm Display and Setting Block
No. 4659-16/34
From initial state
x
From
the
current
time
display
and
setting
block
To
the
current
time
display
and
setting
block
Application of a
high or low level
to the TIME SET
INPUT pin.
The following are the alarm stop conditions during output.
An OFF input (pin 22 = VSS)
An ON input (pin 22 = VDD)
Arrival at the point 59 minutes following start of alarm output.
A snooze input (pin 21 = VDD or VSS) (Alarm output restarts after the completion
of the snooze operation.)
The start of another alarm operation during alarm operation.
State
Display
Initial state
y
Alarm
12 00
Flashing
Either A or B flashing
Numbers
Colon
ALM IND
AM/PM
ALARM
SLEEP
SNOOZE
Operation
Note: If the current time display is
flashing, that flashing is
stopped.
Application of a high or
low level to the ALM-A/B
DISP & SEL pin, thus
selecting the alarm display
and setting mode.
Application of a high or
low level to the ALM-A/B
DISP & SEL pin, thus
selecting the alarm display
and setting mode.
Clearing alarm display
and setting mode.
(Making the ALM-A/B
DISP & SEL pin open.)
Operation enabled
—
Depends on the
display mode
State
Display
Alarm time setting
Alarm
Set time display
Flashing
Either A or B flashing
Numbers
Colon
ALM IND
AM/PM
ALARM
SLEEP
SNOOZE
Operation
Note:
Operation enabled
—
Depends on the
display mode
Alarm setting time
display
State
Display
Alarm operation disable
Alarm
Set time display
Flashing
Enabled alarm flashing
Numbers
Colon
ALM IND
AM/PM
ALARM
SLEEP
SNOOZE
Operation
Note: In the alarm not set mode, the
alarm will not operate even if
the set time is the same as the
current time.
Operation enabled
—
Depends on the
display mode
Alarm setting time
display
Display
Alarm
Colon
ALM IND
AM/PM
ALARM
SLEEP
SNOOZE
Operation
Note:
Depends on the
display mode
Operation enabled
—
Linked to the + and
– inputs
Linked to the + and
– inputs
Flashing
Either A or B flashing
Alarm time setting
State
Numbers
Alarm output starts if the
current time matches the
setting time.
Making the TIME
SET INPUT pin
open.
Application of a low
level to the MANUAL/
SLEEP pin.
Application of a
high or low level
to the TIME SET
INPUT pin.