LSI LS6328

10 Digit LCD Watch with EL Driver Features

* 5 Function Real time clock.

Hour, Minute, Second, Date, Weekday * Alarm and chime.

* 12/24Hour format user select. * 4 year calendar. * 3 keys operation,

KSET/KSETEL, KMODE, KADJ.

* 1/100 second stop watch. * EL Driver built in

* 1/2 bias 1/3 duty LCD format * Low power consumption * 32768 Crystal oscillator * Single 3.0V operation. * Direct buzzer driver.

General Description

The LS6328 is a 10 digit LCD watch which display Hour:Minute Second, Date and Weekday. 12/24Hour display format user select. Hourly chime function. Alarm function. 1/100 second stop watch counter. It is simple three keys operation : KSET/KSETEL, KMODE, KADJ. The EL driver has 0.5/1.5 second of delay. It has low power consumption.

LCD Drawing

Version 0.2 (23.07.00)

LSI LS6328

Operation Modes

The LS6328 has 4 modes – Clock, Alarm, Chronograph and Time Set Mode. By pressing KMODE, it is shift from one mode to another as follow :

Time Mode => Alarm Mode => Chronograph Mode=> Time Set Mode => Time Mode….

Time Mode

In Time Mode , the LS6328 display the current time information, Day, Hour, Minute, Second and Weekday. It also display the ON/OFF status of Alarm and Chime and 12Hr/24Hr format.

In Time Mode, press KADJ to toggle between 12HR and 24Hr display format.

Time Set Mode

In Time Mode, press KMODE 3 times to go to Time Set Mode. On entering Time Set Mode, the second digits flash..

In Time Set Mode, press KSET to select the setting item with the sequence as follow :

Second => Hour => Minute => Month => Day => Weekday.

In Time Set Mode, press KADJ to adjust the value. Press and hold KADJ will cause rapid increment. In Time Set Mode, press KMODE to exit setting mode.

Alarm Mode

In Time Mode, press KMODE to go to Alarm Mode.

In Alarm Mode, press KADJ to enable/disable Alarm and Chime which follows the sequence :

Alarm off Alarm on Alarm on Alarm off Alarm off

Chime off => Chime off => Chime on => Chime on => Chime off …….

In Alarm Mode, press KSET to set Alarm Hour, the Alarm will be set to ON, press KADJ to set value. Press KSET to set Alarm Minute, press KADJ to set value. Press KSET again exit Alarm Setting. Press KMODE exit Alarm Mode.

Chronograph Mode

In Time Mode, press KMODE 2 times to go to Chronograph Mode. The sport timer counts up to 99 minutes 59.99 second with 1/100 second and Lap time function.

It is operated as follows:

Press KADJ to start/stop the timer.

If the timer is started, press KSET to have the Lap time.

If the timer is stopped, press KSET to reset the timer to 00:00 00.

2 Version 0.2 (23.7.00)

LSI LS6328

Buzzer Output

B[0:1] can drive buzzer directly. The buzzer output waveform is shown below.

EL Output

When KSET or KEL is pressed, R0,R1 provide the waveform to drive external EL circuit. When KSET is pressed, the EL delay is around 0.5second. When KEL is pressed , the EL delay is around 1.5 second. The R0, R1 output waveform is as follows :

3 Version 0.2 (23.7.00)

LSI LS6328

Oscillator Trim Capacitor

The 32kHz crystal is connected across pad OI and OO when external trim capacitor is used. The OI15PF can be used instead of OI which use internal capacitor of around 10-15pf.

4 Version 0.2 (23.7.00)