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PDF SC1628D Data sheet ( Hoja de datos )
| Número de pieza | SC1628D | |
| Descripción | LED Driver IC | |
| Fabricantes | ETC | |
| Logotipo |  |
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SC1628Dwww.DataSheet4(U文.co件m 编号：S&CIC0531)
LED Driver IC
DESCRIPTION
SC1628D is an LED Controller driven on a 1/7to 1/8 duty factor. Eleven 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 SC1628D via a four-line serial interface.
Housed in a 28-pin SO Package, SC1628D pin assignments and application circuit are optimized for easy PCB Layout and cost
saving advantages.
FEATURES
CMOS Technology
Low Power Consumption
Multiple Display Modes
Key Scanning
8-Step Dimming Circuitry
Serial Interface for Clock, Data Input, Data Output, Strobe Pins
Available in 28-Pin, SOP Package
APPLICATION
Micro-computer Peripheral Device
VCR set
Combi set
BLOCK DIAGRAM
DI/O
CLK
STB
OSC
R
GND
Serial
Data
Interface
Control
Dispaly Memory
OSC Timing Generator
Key Matrix
Memory
SEGMENT DRIVER/
KEY SCAN OUTPUT/
GRID DRIVER
SG1/KS1
SG2/KS2
SG3/KS3
SG4/KS4
SG5/KS5
SG6/KS6
SG7/KS7
SG8/KS8
SG9/KS9
SG10/KS10
SG12/GR7
SG13/GR6
SG14/GR5
GR4
GR3
GR2
GR1
K1 K2
Dimming Circuit
VDD GND
INPUT/OUTPUT CONFIGURATIONS
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SC1628Dwww.DataSheet4(U文.co件m 编号：S&CIC0531)
LED Driver IC
Command 3: Address Setting Commands
Address Setting Commands are used to set the address of the display memory. The address is considered valid if it has a
value of 00H to 0DH. If the address is set to 0EH or higher, the data is ignored until a valid address is set. When power is
turned ON, the address is set at at 00H.
Please refer to the diagram below.
DISPALYMODE AND RAMADDRESS
Data transmitted from an external device to SC1628D via the serial interface are stored in the Display RAM and are
assigned addresses. The RAM addresses of SC1628D are given below in 8 bits unit.
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SC1628Dwww.DataSheet4(U文.co件m 编号：S&CIC0531)
ABSOLUTE MAXIMUM RATINGS
(Unless otherwise stated, Ta=25℃, GND=0V)
Parameter
Supply Voltage
Logic Input Voltage
Driver Output Current
Maximum Driver Output Current/Total
Symbol
VDD
VI
IOLGR
IOHSG
ITOTAL
LED Driver IC
Ratings
-0.5 to +7
-0.5 to VDD +0.5
+250
-50
400
Unit
Volts
Volts
mA
mA
mA
RECOMMENDED OPERATING RANGE
(Unless otherwise stated, Ta=-20 to +70℃, GND=0V)
Parameter
Symbol
Min.
Typ.
Max.
Logic Supply Voltage
VDD 4.5 5 5.5
Dynamic Current (see Note)
IDDdyn
-
- 10
High-Level Input Voltage
VIH 0.8VDD -
VDD
Low-Level Input Voltage
VIL 0 - 0.3VDD
Note: Test Condition: Set Display Control Commands = 80H (Display Turn OFF State & under no load)
Unit
V
mA
V
V
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, VDD=5V, GND=0V, Ta=25℃)
Parameter
Symbol
Test Condition
Min.
Typ. Max. Unit
High-Level Output Current
Vo=VDD-2V
IOHSG1
-20 -25 -40 mA
SG1 to SG10, SG12/GR7
Vo=VDD-3V
IOHSG2
-25 -30 -50 mA
SG1 to SG12, SG12/GR7
Low-Level Output Current
IOLGR
Vo=0.3V
GR1 to GR6, SG12/GR7
100
140
- mA
Low-Level Output Current
IOLDOUT Vo=0.4V
4 - - mA
Segment High-Level
Output Current Tolerance
ITOLSG
Vo=VDD-3V
SG1 to SG10, SG12/GR7
-
- ±5 mA
High-Level Input Voltage
VIH -
0.8 VDD
-
5V
Low-Level Input Voltage
Oscillation Frequency
VIL -
fosc R=33 KOhms
0 - 0.3VDD V
350 500 650 KHz
K1 to K2 Pull Down Resistor
RKN
K1 to K2
VDD=5V
40 - 100 KOhms
APPLICATION CIRCUIT
第 11 页 共 11 页
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SC1628D.PDF ] | |
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