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DL927 - 4-DIGIT COUNTDOWN/UP TIMER

General Description

DL927 is an UP/DOWN timer IC.

LCD.

Maximum countdown time is 59:59 or 99:59.

Key Features

  • Special alarm trigger output for switch control or for driving another melody IC.
  • Internal voltage doubler.
  • 32,768Hz quartz crystal time base.
  • Single 1.5V battery operation.
  • Direct drive buzzer.
  • 4 digit LCD display.
  • Maximum count 59:59 min or 99:59 min (bonding option).
  • Just count-down timer repeat function by bonding option.
  • Minutes and Seconds set independently.
  • Timer reset when depressing MSET and SSET simultaneously.
  • Alarm sound 2kHz, 3.

📥 Download Datasheet

Datasheet Details

Part number DL927
Manufacturer JinFengDa
File Size 146.42 KB
Description 4-DIGIT COUNTDOWN/UP TIMER
Datasheet download datasheet DL927 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
www.jfd-ic.com DL927 DL927 4-DIGIT COUNTDOWN/UP TIMER 1. General Descriptions DL927 is an UP/DOWN timer IC. It can directly drive a standard 4 digit 1/4 duty cycle LCD. Maximum countdown time is 59:59 or 99:59. Count up cycle time is 60 or 100 minutes by bonding option. Also bonding option is for alarm time 32 or 64 seconds, 2kHz, and up/down or just down function. Feasible input options and universal functions give this chip many uses such as parking alarm timer, pillbox timer, kitchen timer, etc. 2. Features  Special alarm trigger output for switch control or for driving another melody IC  Internal voltage doubler  32,768Hz quartz crystal time base  Single 1.