LD1960A
9 SEGMENT X 7 GRID LED Driver with key scan
9 SEGMENT X 7 GRID LED Driver with Key scan
LD1960A
Ver. 4.0 / Feb. 2012
This document is a general product description and is subject to change without notice.
LDT Inc. does NOT assume any responsibility use of circuits described.
1
LDT Inc.
WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 730 Fax. +82 41 520 7337
www.ldt.co.kr
Ver.4.0
LD1960A
9 SEGMENT X 7 GRID LED Driver with key scan
LD1960A Revision History
Version
1.0
2.0
- First Version
- Key Scan Read Sequence change
4Byte Repeat
8Byte Repeat
-. K1 Pin Key Scan function disable & Pin description changed
-. Add to DIP Type Package (P23)
-. VIH & VIL range Change (P7)
VIH : 0.5VDD, VIL : 0.2VDD
VIH : 0.6VDD, VIL : 0.4VDD
Contents
Date
2011. 06. 20
2011 . 08. 08
3.0
2011. 11. 03
4.0
2012. 02. 02
2
LDT Inc.
WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 730 Fax. +82 41 520 7337
www.ldt.co.kr
Ver.4.0
LD1960A
9 SEGMENT X 7 GRID LED Driver with key scan
DESCRIPTION
The LD1960A is specifically designed for LED and LED DISPLAY drivers. The LD1960A has 9 to 6
segment output lines, 7 to 4 grid output lines, one display memory, control circuit, 3 line serial
data interface, and 6 x 2 matrix key scan. Those functions are all incorporated into a single chip to
build a highly reliable peripheral device for a single chip microcomputer.
It is very convenient to control for numeric display. LD1960A‟s pin assignments and application
Circuit are optimized for easy PCB layout and cost saving advantages.
FEATURES
•
•
•
•
•
•
•
•
CMOS technology
Segment output line selection by command : 6 ~ 9
Grid output line selection by command : 7 ~ 4
Operation voltage : 5V
Low power consumption
8-step dimming control by command
Serial interface for clock, data input/output, strobe pins
20-pin TSSOP package, 20-pin DIP package
APPLICATION
•
Segment LED display : VCR, DVD, MWO
ORDERING INFORMATION
Device name
LD1960A-TSS
LD1960A-DIP
Segment
6~9 Segment
6~9 Segment
Grid
7~4Grid
7~4Grid
Key Scanning
6X1 matrix
6X1 matrix
PKG Type
20TSSOP
20 DIP
3
LDT Inc.
WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 730 Fax. +82 41 520 7337
www.ldt.co.kr
Ver.4.0
LD1960A
9 SEGMENT X 7 GRID LED Driver with key scan
PIN CONFIGURATION
PIN DESCRIPTION
PIN NAME
K1
I/O
I
DESCRIPTION
User don’t use. It is only test mode pin
This pin has pull down resistor(4.2K) internally.
Serial Data Input and N-channel open drain Output Pin
This pin inputs serial data at CLK rising edge.
This pin outputs at CLK falling edge.
Serial clock input pin
Input data is triggered at rising edge.
Output data is triggered at falling edge.
When this pin is HIGH, CLK signal is ignored.
The data input after the STB has fallen is processed
as a command.
Key scan input pin.
This pin is operated with SEG1/KS1 to SEG6/KS6 pins.
This pin has Pull down resistor internally.
Power Supply
Segment output pins. ( P-channel open drain)
Also key scan source pins.
Segment / Grid output pin
Segment / Grid output pin
Segment / Grid output pin
Grid output pin
Ground Pin
PIN No.
1
DIO
I/O
2
CLK
I
3
STB
I
4
K2
I
5
VDD
SEG1/KS1 to
SEG6/KS6
SEG12/GR7
SEG13/GR6
SEG14/GR5
GR4,GR3,GR2,GR1
GND
-
O
O
O
O
O
-
6
7,8,9,10
11,12
13
14
15
16,17,19,20
18
4
LDT Inc.
WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 730 Fax. +82 41 520 7337
www.ldt.co.kr
Ver.4.0
LD1960A
9 SEGMENT X 7 GRID LED Driver with key scan
BLOCK DIAGRAM
5
LDT Inc.
WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220
Tel. +82 41 520 730 Fax. +82 41 520 7337
www.ldt.co.kr
Ver.4.0
京公网安备 11010802033920号
EEWORLD
