Make connection of the highest-order digit as shown below.

Timing Chart

Time setting (CTR/CLK = ‘‘L’’)

Sample Display at Each Display

(Setting by the time signal, hours-minutes display, hours-minutes setting)

Setting by the time signal: Setting to PM 12:00

Hours-minutes display: Display of PM 12:34

Hours-minutes setting: Setting to PM 11:45 from PM 11:23

12-hour system

24-hour system

Setting by the

time signal and

minutes setting

DEMAND pin

Flashing (2Hz) for setting by

the time signal

Mode of setting by

the time signal

Flashing stop

Hours-minutes

setting mode

Minutes

advance at

a 2 Hz rate

Hours-minutes

display

1.2 s. or more

Execution of counting

30min. or more as 1hr.

and disregarding 29min. or less

SET pin

Within 1.0 s.

Hours-minutes display

Hours setting

and minutes

setting

DEMAND pin

Flashing (2 Hz)

for setting by

the time signal

SET pin

(Hours setting)

Hours-minutes

setting mode

Flashing stop

1.2s

t: Approximately 100 ms.

Flashing (2 Hz)

for setting by

the time signal

Hours-minutes

setting mode

Flashing stop

Execution of minutes

setting

(Advance at a 2 Hz rate)

1.2s

Execution of hours

setting

(Advance at a 2 Hz rate)

Execute setting by

the time signal with

the SET pin.

Flashing ata2Hz rate when in

the mode of setting by the time

signal

PM

sign

When setting by the time signal is

executed, minutes become 00. If the

minutes display is at 30 to 59, hours are

incremented by 1 (counting 30 or more

as 1 hr. and disregarding 29 or less).

Flashing at a 2 Hz rate

The PM sign flashes in the afternoon when in the mode of

setting by the time signal, hours-minutes display,

hours-minutes setting.

(for 12-hour system).

PM sign

Set the SET pin to

lapse of 1.2 s,

flashing stops and

hours or minutes

advance at a 2 Hz

rate.

PM sign

Flashing at

a 2 Hz rate

PM

sign

setting is executed.

setting is executed.

LC7267

No. 1511- 5/10