CDT3050 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – The CDT3050 is a low voltage 3 digits LCD driver for advanced Count Down Timer

Chip Design Technology
89 10 24
CDT3050
P. 1
3-DIGIT DOWN TIMER IC
DESCRIPTION
The CDT3050 is a low voltage 3 digits
LCD driver for advanced Count Down
Timer.
Minimal components are used.
With START/STOP and RECALL setting
functions.
LCD: 1/2 Duty, 1/2 Bias, 2 Commons
APPLICATIONS
Count Down Timer
Electronic Timer
Setting Control Timer
FEATURES
CMOS Technology
Supply Voltage Range 1.2 ~ 1.8VDC
Low Standby Current < 5µA
With a Trigger Output Capability
Time Setting Max: 999 Minutes
Min: 1 Minute
32768 Hz Crystal used
LCD displays Seconds until the last
minute
16 seconds, 4Hz (64 Sounds) BiBi
Alarm when time runs out
“ ” - Operating symbol
“S” - Seconds symbol
DEVICE TYPE
Type No.
CDT3050
Package
Chip form
DC ELECTRONICAL CHARACTERISTICS
Characteristics
Operation Voltage
Operation Current
BZ Driver Current
Crystal
LCD Display Freq
K0~K9 Input Current
Trigger Output Current
Symbol
VDD
Idd
Ibz
Ikey
Itrig
Min
Type
Max
Unit
1.2
1.5
1.8
V
-
-
2.0
µA
2.0
-
-
mA
-
32768
-
Hz
-
32
-
Hz
-
-
5
µA
1
-
-
mA
Above testing conditions are based on VDD=1.5V
CDT-3050 ---
1