LM8560 datasheet(4/9 Pages) UTC

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UTCLM8560

MOS IC

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R502-005,D

Table1 Display Modes

Selective lnput

Alarm

Sleep

Display Mode

Digit No. 1

Digit No. 2

Digit No. 3

Digit No.4

Time display

10’s place for

hour, AM/PM

Hour

10’s place for

Minute

VSS

Alarm display

10’s place for

hour, AM/PM

Hour

10’s place for

Minute

VSS

Sleep display

Clear

Hour

10’s place for

Minute

VSS

Second display

Clear

Minute

10”s place for

Second

Note: Activating VSS using two inputs simultaneously (alarm select and sleep select), the display mode is switched to

display seconds.

*Time Setting Input:

There are two setting inputs for use with “hour” and “minute”. Time content settings show in Table2 are

possible by activating VSS to these pins, A pull-down resistor is built-in.

Table2 Setting contents

Display Mode

Set Input

Functions

Hour

Immediately adds 1 to hour digits and then assigns an additional 1, at a

speed of 2 Hz, after each 1/4 to 3/4 second.

Min

Immediately adds 1 to minute digits and then assigns an additional 1, at a

speed of 2 Hz, after each 1/4 to 3/4 second. Seconds are rest.

Time

Both

Operates both as outline above.

Hour (note1)

Second digits are cleared to [00].

Min

Time holds.

Second

(Alarm & Sleep)

Both (note2)

Resets hour and minute digits as [0:00] when operating in 24-H mode or

[12:00] when operating in 12-H mode.

Hour

Immediately adds 1 to hour digits and then assigns an additional 1, at a

speed of 2 Hz, after each 1/4 to 3/4 second.

Min

Immediately adds 1 to minute digits and then assigns an additional 1, at a

speed of 2 Hz, after each 1/4 to 3/4 second.

Alarm

Both

Resets hour and minute digits as [0:00] when operating in 24-hour mode or

[12:00] when operating in 12-hour mode.

Sets sleep counter to [0:59] instantly when VDD is activated to sleep select

Hour

Sets Sleep counter to [1:59] instantly when VDD is activated to sleep select

and hour at the same time.

Min

Sleep counter looses 1 at a speed of 2 Hz.

Sleep

Both

Sleep counter looses 1 at a speed of 2 Hz.

Note:1.Once conditions have been switched to reset or hold, input of other functions is locked until both Hour and

Min input have been separated.

2.When the digital reading for seconds is between 30 and 59 seconds, 1 is added to the digits for minutes as

he digital reading for seconds rests to [00].

*12/24H Select Input :

When this pin set open (VDD), a 12-hour display is enabled whereas connecting this pin to VSS enables

the 24-hour display. A pull-down resistor is build-in.

*Power Failure Detection Display :

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