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PDF IK2108A Data sheet ( Hoja de datos )
| Número de pieza | IK2108A | |
| Descripción | LED Driver IC | |
| Fabricantes | IK Semicon | |
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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 = -40 to 85 C
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
1 page  
IK2108A
FUNCTIONAL DESCRIPTION
Commands
A command is the first byte (b0 to b7) inputted to IK2108A via DI/O Pin after STB Pin has changed
from ”HIGH” to “LOW” state. If for some reason the STB Pin is set “HIGH” while data or commands
are being transmitted, the serial communication is initialized, and the data commands being
transmitted are considered invalid.
COMMAND 1: DISPLAY MODE SETTING COMMANDS
IK2108A provides 5 display modes setting as shown in the diagram below. As stated earlier a
command is the first one byte (b0 to b7) transmitted to IK2108A via the DI/O Pin when STB is “LOW”.
However, for these commands, Bit 5 to Bit 8 (b4 to b7) are given a value of “0”.
The Display Mode Setting Commands determine the number of segments and grids are used (14 to
10 segments, 8 to 12 grids). A display commands “ON” must be executed in order to resume display.
If the same mode setting is selected, no command execution is take place, therefore, nothing happens.
The Display Mode Setting Commands are also used to turn ON or OFF the display. Please refer to the
diagram below.
When the power is turned ON, the display is turned OFF (b3 is “0”) and the mode 111 is selected (b2
to b0 are “1”).
Display Mode Settings:
011: 12 Grids, (10 Segments)
100: 11 Grids, (11 Segments)
101: 10 Grids, (12 Segments)
110: 9 Grids, (13 Segments)
111: 8 Grids, (14 Segments)
5 May 2012, Ver. 03
5 Page 
SWITCHING CHARACTERISTIC WAVEFORM
Switching Characteristics Waveform is given below.
IK2108A
11 May 2012, Ver. 03
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet IK2108A.PDF ] | |
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