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參數資料
| 型號： | SCE5745Q |
| 元件分類： | 顯示用LED |
| 英文描述： | 5X7 DOT MATRIX DISPLAY, ORANGE, 4.57 mm |
| 封裝： | PLASTIC, SIP-7 |
| 文件頁數： | 12/15頁 |
| 文件大小： | 589K |
| 代理商： | SCE5745Q |
2000 Inneon Technologies Corp. Optoelectronics Division San Jose, CA
SCE5740/1/2/3/4/5
www.inneon.com/opto 1-888-Inneon (1-888-463-4636)
OSRAM Opto Semiconductors GmbH & Co. OHG Regensburg, Germany
www.osram-os.com +49-941-202-7178
6
March 28, 2000-10
Figure 7. Block Diagram
Operation of the SCE574x
The SCE574x display consists of a CMOS IC containing control
logic and drivers for four 5 x 7 characters. These components
are assembled in a compact plastic package.
Individual LED dot addressability allows the user great freedom
in creating special characters or mini-icons.
The serial data interface provides a highly efcient interconnec-
tion between the display and the mother board. The SCE574x
requires only three lines as compared to 14 lines for an equiva-
lent four character parallel input part.
The on-board CMOS IC is the electronic heart of the display.
The IC accepts decoded serial data, which is stored in the inter-
nal RAM. Asynchronously the RAM is read by the character
multiplexer at a strobe rate that results in a icker free display.
Figure 7 shows the three functional areas of the IC. These
include: the input serial data register and control logic, a 140
bits two port RAM, and an internal multiplexer/display driver.
Y
Address
Decode
RST
CLKSEL
CLK I/O
Data
SDCLK
Load
Columns
0 to 20
User RAM
Memory
7x20 Bits
X Address Decode
3 Bit Address Register
6 Bit Control
Word Register
Control Word Logic
8
Bit
Serial
Register
Column
Drivers
Digit
0 to 4
Display
OSC
Counter
Row Control Logic
and Row Drivers
Rows
0 to 6
0
1
2
3
Counter
Mux
Rate
– 7
– 64
The following explains how to format the serial data to be
loaded into the display. The user supplies a string of bit mapped
decoded characters. The contents of this string is shown in Fig-
ure 8a. Figure 8b shows that each character consist of eight 8
bit words. The rst word encodes the display character location
and the succeeding seven bytes are row data. The row data
represents the status (On, Off) of individual column LEDs. Fig-
ure 8c shows that each 8 bit word is formatted to represent
Character Address, or Column Data.
Figure 8d shows the sequence for loading the bytes of data.
Bringing the LOAD line low enables the serial register to accept
data. The shift action occurs on the low to high transition of the
serial data clock (SDCLK). The least signicant bit (D0) is loaded
rst. After eight clock pulses the LOAD line is brought high.
With this transition the OPCODE is decoded. The decoded
OPCODE directs D4–D0 to be latched in the Character Address
register, stored in the RAM as Column data, or latched in the
Control Word register. The control IC requires a minimum 600
ns delay between successive byte loads.
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| SCE5781 | 5X7 DOT MATRIX DISPLAY, YELLOW, 4.57 mm |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SCE5780 | 制造商:OSRAM 制造商全稱:OSRAM 功能描述:Serial Input Dot Addressable Intelligent Display㈢ Devices |
| SCE5781 | 功能描述:LED 顯示器和配件 5x7 Yellow 0.18", 8-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數位數量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| SCE5782 | 功能描述:LED 顯示器和配件 5x7 Super Red 0.18", 8-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數位數量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| SCE5783 | 功能描述:LED 顯示器和配件 5x7 Green 0.18", 8-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數位數量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| SCE5784 | 功能描述:LED 顯示器和配件 5x7 Hi-Eff Green 0.18", 8-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數位數量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
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