Ten with voltage LCD display watch 3 v

1001

Feature:

* Ten-digit 6-function real-time clock.       *  hours, minutes, seconds, dates, weeks, months.

* Alarm clock and hourly sound.               * 12 or 24 hours  selection.

* Can directly drive horn/buzzer                * 3 key operations: KSET, KMODE, KADJ.

* 1/100 second timing function.                 * 1/2 BIAS 1/3 DUTY 10-bit LCD display.

* Very low power consumption.                 * 32768Hz oscillator, built-in capacitor.

* Single 3.0V operating voltage.                 * 3”backlight (EL) delay, hold down or not.

* According to the LOGO;                           * the built-in LCD output voltage regulation circuit.

Description:

  The V1002 is a 10-digit LCD display watch with low power consumption.

It shows hours, minutes, seconds, dates, months and weeks.

12 or 24 hours selection. Hourly sound, alarm clock function.

1/100 second stop-watch.

Opration:

The V1002 has 4 modes: clock, alarm, counter and time setting mode.

By pressing the KMODE button, it will switch from one mode to another as follows:

Mode = > the alarm clock time = = > > counter mode time set mode = > time... .

Time Mode

In time mode, V1002

The display includes: 1. Current time: hours, minutes, seconds, and days of the week;

2. Displays the on/off state of the alarm and the hourly hour;

3. Displays the 12-hour or 24-hour clock.

Time setting mode:

In the time mode, press the KMODE button three times to

return to the time setting mode, and the number of seconds

flashes. In the time setting mode, press KSET to select

an item in the following order:

Seconds => hours => minutes => month => dates => weeks.

In the time setting mode, press KADJ to adjust the value and

keep pressing it for a quick increase. In the time setting

mode, press KMODE to exit the setting mode.

Alarm Mode

In time mode, press KMODE to return to alarm mode.

In the alarm mode, press the KADJ key to turn on/off the

alarm clock and the hourly hour, the order is as follows:

  Alarm alarm on alarm off alarm on alarm off

Sing off = > singing close call = > open call = > = > singing off.

  In the alarm mode, KSET back to set the alarm clock hour, this alarm Settings are switched on,

press the size of KADJ setting.

KADJ according to KSET set alarm minutes, according to the size of the set values.

According to the KSET exit alarm Settings again.

According to the KMODE exit alarm mode.

Counter Mode

  In time mode, press KMODE 2 times to return to counting mode. The counter has a maximum time

of 59 minutes and 59.99 seconds. There is 1/100 second and segmented count function. The

operation is as follows:

Press KADJ to start/stop counting.

If the counter starts, press KSET with the split timer function.

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

Weekly comparison table:

LCD schematic:

LCD panel of COM and SEG distribution list

	COM1	COM2	COM3		COM1	COM2	COM3
SEG1		10C	10B	SEG14	:	7F	7A
SEG2	10D	10G	10A	SEG15	2D	2BC	2A
SEG3	9C	10E	10F	SEG16	2G	2EF	S3
SEG4	9D	9G	9B	SEG17	1C	1B	1A
SEG5	9E	9F	9A	SEG18	1G	1H	1F
SEG6	4C	4B	4A	SEG19	1D	1E	S1S2
SEG7	4D	4G	4F	SEG20	H24	ALM2	ALM1
SEG8	4E	3C	3B	SEG21	6B	6A	PM
SEG9	8C	3E	3ADG	SEG22	6C	6G	6F
SEG10	8D	8G	8B	SEG23	6D	6E	5B
SEG11	8E	8F	8A	SEG24	5C	5G	5A
SEG12	7D	7C	SPL	SEG25	5D	5E	5F
SEG13	7E	7G	7B

LCD electric pressure = 3.2 V

LCD duty ratio = 1/3

LCD partial pressure = 1/2

Foot the bitmap

Application circuit principle diagram:

Remark:

1. The chip substrate by VDD; TM for IC testing end;

2. ALA and propagated for sound output, either when it is applied,

the ALA for built-in triode output side,

Propagated to buzzer side or external triode application.