LC7267 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC7267

Digital Display of Clock/Receiving Frequency for Radio Set Applications

SANYO -> Panasonic 

LC7267

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

12-hour system

24-hour system

Timing Chart

Time setting (CTR/CLK = ‘‘L’’)

Setting by the

time signal and

minutes setting

Hours setting

and minutes

setting

DEMAND pin

Flashing (2Hz) for setting by

the time signal

Mode of setting by

Execution of counting the time signal

30min. or more as 1hr.

and disregarding 29min. or less

SET pin

1.2 s. or more

Flashing stop

Hours-minutes

setting mode

Minutes

advance at

a 2 Hz rate

Hours-minutes

display

Within 1.0 s.

Hours-minutes display

DEMAND pin

Flashing (2 Hz)

for setting by

the time signal

SET pin

(Hours setting)

Hours-minutes

setting mode

Flashing stop

1.2s

Execution of hours

setting

(Advance at a 2 Hz rate)

t: Approximately 100 ms.

Flashing (2 Hz)

for setting by

the time signal

Hours-minutes

setting mode

Flashing stop

1.2s

Execution of minutes

setting

(Advance at a 2 Hz rate)

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

Execute setting by

the time signal with

the SET pin.

Flashing at a 2 Hz rate when in

the mode of setting by the time

signal

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).

PM

Flashing at a 2 Hz rate

sign

Hours-minutes display: Display of PM 12:34

PM sign

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).

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

Set the SET pin to

VDD or VSS. After

lapse of 1.2 s,

flashing stops and

hours or minutes

PM sign Flashing at advance at a 2 Hz

PM

a 2 Hz rate rate.

sign

Set the SET pin to VSS, and

setting is executed.

Set the SET pin to VDD, and

setting is executed.

No. 1511- 5/10

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