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参数资料
| 型号： | SCDV5542 |
| 元件分类： | 显示用LED |
| 英文描述： | 5X5 DOT MATRIX DISPLAY, SUPER RED, 3.2 mm |
| 封装： | ROHS COMPLIANT, PLASTIC, DIP-14 |
| 文件页数： | 15/16页 |
| 文件大小： | 675K |
| 代理商： | SCDV5542 |
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23
8
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 Figure Loading
Serial Character Data a“ (page 8). Figure Loading Serial Charac-
ter Data b“ (page 8) shows that each character consist of six 8 bit
words. The first word encodes the display character location and
the succeeding five bytes are row data. The row data represents
the status (On, Off) of individual column LEDs. Figure Loading
Serial Character Data c“ (page 8) shows that each 8 bit word is
formatted to include a three bit Operational Code (OPCODE)
defined by bits D7–D5 and five bits (D4–D0) representing Column
Data, Character Address, or Control Word Data.
Figure Loading Serial Character Data d“ (page 8) 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 significant bit (D0) is loaded first. 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.
As indicated in Figure Loading Serial Character Data a“ (page 8),
a total of 264 bits of data are required to load all eight characters
into the display.
The Character Address Register bits, D4–D0 (Table Load Charac-
ter Address“ (page 9)) and Row Address Register bits, D7–D5
(Table Load Column Data“ (page 9)) direct the Column Data bits,
D4–D0 (Table Load Column Data“ (page 9)) to specific RAM loca-
tion. Table Character ’D’“ (page 8) shows the Row Address for the
example character “D.” Column data is written and read asynchro-
nously from the 200 bit RAM. Once loaded the internal oscillator
and character multiplexer reads the data from the RAM. These
characters are row strobed with column data as shown in Figures
Row and Column Location“ (page 9) and Row Strobing“
(page 10). The character strobe rate is determined by the internal
or user supplied external MUX Clock and the IC’s ÷320 counter.
Loading Serial Character Data
Character “D”
Op code
D7
D6 D5
Column Data
D4
D3
D2
D1
D0
C0
C1
C2
C3
C4
Hex
Row 0
00
0
11
1
0
1E
Row 1
00
1
10
0
1
31
Row 2
01
0
10
0
1
51
Row 3
01
1
10
0
1
71
Row 4
10
0
11
1
0
9E
Character 0
Character 1
Character 2
Character 3
264 Clock Cycles, 52.8 s
Example: Serial Clock = 5MHz, Clock Period = 200ns
Time between LOADS
LOAD
Serial
Clock
DATA
Clock
Period
t 0
D0
D1
D2
D3
D4
D5
D6
D7
11 Clock Cycles, 2.2s
Time
Between
Loads
600ns(min)
OPCODE
Character Address
OPCODE
Column Data
D0
C4
D1
C3
D2
C2
D3
C1
D4
C0
Time
Between
Loads
600ns(min)
11 Clock Cycles, 2.2s
Character 0
Address
Row 0 Column
Data
66 Clock Cycles, 13.2s
Row 1 Column
Data
Row 2 Column
Data
Row 3 Column
Data
Row 4 Column
Data
D0
0
D1
0
D2
0
D3
0
D4
0
D5
1
D6
0
D7
0
D5
D6
D7
a.
b.
c.
d.
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| SCDV5543 | 功能描述:LED 显示器和配件 5x5 Green 0.126" 4-CHARACTER RoHS:否 制造商:Avago Technologies 显示器类型:7 Segment 数位数量:2 字符大小:7.8 mm x 14.22 mm 照明颜色:Red 波长:628 nm 共用管脚:Common Anode 工作电压:2.05 V 工作电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 35 C 封装:Tube |
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| SCDX | 功能描述:XLR 连接器 HINGED COVER D-SIZE RoHS:否 制造商:Neutrik 标准:Standard XLR 产品类型:Connectors 型式:Female 位置/触点数量:3 端接类型:Solder 安装风格:Cable 方向:Vertical |
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| SCDX-6 | 制造商:Neutrik USA Inc 功能描述: |
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