|
|
PDF EXC2668L Data sheet ( Hoja de datos )
| Número de pieza | EXC2668L | |
| Descripción | LED Driver IC | |
| Fabricantes | ETC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EXC2668L (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
LED Driver IC ——— EXC2668L
LED Driver IC
EXC2668L
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
DESCRIPTION
EXC2668 is an LED Controller driven on a 1/7 to 1/8 duty factor. Ten segment
output lines, six grid output lines, 1 segment/grid output lines, one display memory,
control circuit, key scan circuit are all incorporated into a single chip to build a highly
reliable peripheral device for a single chip microcomputer. Serial data is fed to
EXC2668 via a four-line serial interface. Housed in a 28-pin SO Package, EXC2668
pin assignments and application circuit are optimized for easy PCB Layout and cost
saving advantages.
FEATURES
• CMOS Technology
• Low Power Consumption 5V
• Multiple Display Modes (10segment, 7Grid to 11segment, 6Grid)
• Key Scanning (10 x 2 Matrix)
• 8-Step Dimming Circuitry
• Serial Interface for Clock, Data Input, Data Output, Strobe Pins
• RC oscillator inside
• POR Circuit inside
• Available in 28-pin, SOP Package
1
1 page  
LED Driver IC ——— EXC2668L
FUNCTIONAL DESCRIPTION：
A command is the first byte (b0 to b7) inputted to EXC2668 via the DIN Pin
after STB Pin has changed from HIGH to LOW State. If for some reason the STB Pin
is set to HIGH while data or commands are being transmitted, the serial
communication is initialized, and the data/commands being transmitted are
considered invalid.
（1） Display Mode Setting Commands：
EXC2668 provides 2 display mode settings as shown in the diagram below: As stated earlier
a command is the first one byte (b0 to b7) transmitted to EXC2668 via the DIN Pin when STB is
LOW. However, for these commands, the bit 3 to bit 6 (b2 to b5) are ignored, bit 7 & bit 8
(b6 to b7) are given a value of 0.
The Display Mode Setting Commands determine the number of segments and grids to be
used(12 to 14segments, 4 to 6 grids). A display command 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.
MSB
00
————
Not Relevant
LSB
b1 b0
10
11
6G，12S
7G，11S
When Power is turned ON, the 7-grid , 11-segment modes is selected.
（2） Data Setting Commands：
The Data Setting Commands executes the Data Write or Data Read Modes for EXC2668. The
data Setting Command, the bits 5 and 6 (b4, b5) are ignored, bit 7 (b6) is given the value of 1
while bit 8 (b7) is given the value of 0. Please refer to the diagram below.
When poweris turned ON, bit 4 to bit 1 (b3 to b0) are given the value of 0.
MSB
LSB
0 1 — — b3 b2 b1 b0 Data Write&Read Mode Setting：
Mode Settings： Not Relevant
0：Normal Mode
00：Write Data to Display Mode
10：Read Key Data
1：Test Mode
Address Increment Mode Setting（Display Mode）：
0：Increment Address after Data has been Written
1：Fixes Address
5
5 Page 
Segment
High-Level
OutputCurrent
Tolerance
LED Driver IC ——— EXC2668L
Itolsg - - 5 %
PullDown
Resistor
RL
10 KΩ
Input C u r r e n t
High-LevelInput
Voltage
Low-LevelInput
Voltage
Delay V o l t a g e
DynamicCurrent
II
VIH
VIL
VH
IDDdyn
- - ±1 μA
0.7
VDD
-
-
-
-
-
0.35
-
0.3
VDD
-
5
V
V
V
mA
VO = VDD – 3V，
Seg1～Seg11
K1 - K3
VI = VDD / VSS
CLK，DIN，STB
CLK，DIN，STB
CLK，DIN，STB
No Load，Display off
SWITCHING CHARACTERISTIC
（Ta = -20 ～ +70℃，VDD = 4.5 ～ 5.5 V）
Parameter
Oscillatio
n
Frequency
Timing Delay
Symbol Min. Typ.
fosc - 500
tPLZ - -
Max.
-
300
U n it
KHz
ns
tPZL - - 100 ns
Rise time
TTZH1
TTZH2
-
-
- 2 μs
- 0.5 μs
Fall time
TTHZ - - 120 μs
Max frequency Fmax 1 -
- MHz
Input Cap
CI - - 15 pF
TestCondition
CLK → DOUT
CL = 15pF, RL = 10 K
Ω
CL =
300p
F
Seg1～Seg10
Grid1～Grid4
Seg12/Grid7～
Seg14/Grid5
CL = 300pF，Segn，
Gridn
dutycycle 50%
-
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet EXC2668L.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EXC2668L | LED Driver IC | ETC |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |