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IK2108A Datasheet Preview

IK2108A Datasheet

LED Driver

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TECHNICAL DATA
LED Driver IC
IK2108A
Description
The IK2108A are anode-grid LED display drives 5.0V~18.0V with output size 8 digits x
14 segments to 12 digits x 10 segments and addition key scan function.
Serial interface provides connection with microprocessor.
Features
• Operation voltage for digital part: 3.0V ~ 5.5V
• Operation voltage for output LEDs: 5.0V ~ 18.0V
• 7-step individual dimming control for each grid
• OSC: built in (with external resistor) 500kHz @ R=12.1kΩ
• Pulse segment current: 27mA @ 8 digits x 14 segments
39mA @ 12 digits x 10 segments
• Key scanning: 10x3 matrix
• Serial Interface
• Operation Temperature : -40 ~ 85°C
SOP-32
Application
LQFP-32
Washing machine,refregerator, microwave oven, conditioner and other
Device
IK2108ADW
IK2108ADWT
IK2108ALQ
ORDERING INFORMATION
Operating
Temperature Range
TA = -40to 85C
Package
SOP 32
SOP 32
LQFP-32
Shipping
Tube
Tape&Reel
Tape&Reel
Pin Description IK2108A (32Pins)
RCUR
DI/O
CLK
STB
K1
K2
K3
VDD
GND
SG1/KS1
SG2/KS2
SG3/KS3
SG4/KS4
SG5/KS5
SG6/KS6
SG7/KS7
1
2
3
4
5
6
IK2108A
7
8
9
10
11
12
13
14
15
16
32 GR1
31 GR2
30 GR3
29 GR4
28 GR5
27 GR6
26 GR7
25 GR8
24 VCC
23 SG14/GR9
22 SG13/GR10
21 SG12/GR11
20 SG11/GR12
19 SG10/KS10
18 SG9/KS9
17 SG8/KS8
1 May 2012, Ver. 03




IK Semicon

IK2108A Datasheet Preview

IK2108A Datasheet

LED Driver

No Preview Available !

IK2108A
Pin Name
RCUR
DI/O
CLK
STB
K1 to K3
VDD
VCC
SG1/KS1 to
SG10/KS10
SG11/GR12 to
SG14/GR9
GR8 to GR1
GND
Pin
I/O
Description
SOP-32
LQFP-
32
I/O
A resistor is connected to this pin to determine the output
currents and oscillation frequency.
1 30
Data Input - Output Pin
This pin inputs serial data at the rising edge of the shift clock
I/O (starting from the bit)
2 31
Data Output Pin - N-Channel, Open-Drain
This pin outputs serial data at the falling edge of the shift clock
Clock Input Pin
I This pin reads serial data at the rising edge and output data at 3 32
the falling edge.
Serial Interface Strobe Pin
I
The data input after the STB has fallen is processed as a
command.
41
When this pin is HIGH, CLK is ignored.
Key Data Input Pins
I The data sent to these pins are latched at the end of the display 5-7 2-4
cycle. (Internal Pull-Up Resistor)
- Power Supply for Digital Part
- Power Supply for Output Part
85
24 21
O
Segment Output Pins (N-channel open drain)
Also acts as the Key Source
10-19 7-16
O Segment / Grid Output Pins
20-23 17-20
O Grid Output Pins (P-Channel, Open Drain)
- Ground Pin
25-32
9
22-29
6
BLOCK DIAGRAM
DI/O
Serial
CLK Data
STB Interface
OSC
RCUR
R
GND
Current
Reference
Voltage
Reference
Control
Display
Memory
Timing
Generator
Key Matrix
Memory
Dimming
Circuit
Segment
Driver/
Key Scan
Output/
Grid
Driver
K1 K2 K3 VDD VCC GND
SG1/KS1
SG2/KS2
SG3/KS3
SG4/KS4
SG5/KS5
SG6/KS6
SG7/KS7
SG8/KS8
SG9/KS9
SG10/KS10
SG11/GR12
SG12/GR11
SG13/GR10
SG14/GR9
GR8
GR7
GR6
GR5
GR4
GR3
GR2
GR1
2 May 2012, Ver. 03


Part Number IK2108A
Description LED Driver
Maker IK Semicon
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