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参数资料
| 型号： | HDSP-2500 |
| 英文描述： | Eight Character 5 mm and 7 mm Smart Alphanumeric Displays |
| 中文描述： | 八字5毫米和7毫米智能字母数字显示器 |
| 文件页数： | 3/16页 |
| 文件大小： | 406K |
| 代理商： | HDSP-2500 |
11
Character RAM
This RAM stores either ASCII character data or a UDC RAM address.
Flash RAM
This is a 1 x 8 RAM which stores Flash data.
User-Defined Character RAM
This RAM stores the dot pattern for custom characters.
(UDC RAM)
User-Defined Character
This register is used to provide the address to the UDC RAM when
Address Register
the user is writing or reading a custom character.
(UDC Address Register)
Control Word Register
This register allows the user to adjust the display brightness, flash
individual characters, blink, self test, or clear the display.
Display Internal Block
Diagram
Figure 1 shows the internal block
diagram of the HDSP-210X/
-211X/-250X displays. The CMOS
IC consists of an 8 byte Character
RAM, an 8 bit Flash RAM, a 128
character ASCII decoder, a 16
character UDC RAM, a UDC
Address Register, a Control Word
Register, and refresh circuitry
necessary to synchronize the
decoding and driving of eight 5 x
7 dot matrix characters. The
major user-accessible portions of
the display are listed below:
Character Ram
Figure 2 shows the logic levels
needed to access the
HDSP-210X/-211X/-250X
Character RAM. During a normal
access, the CE = “0” and either
RD = “0” or WR = “0.” However,
erroneous data may be written
into the Character RAM if the
address lines are unstable when
CE = “0” regardless of the logic
levels of the RD or WR lines.
Address lines A
0-A2 are used to
select the location in the Charac-
ter RAM. Two types of data can
be stored in each Character RAM
location: an ASCII code or a UDC
RAM address. Data bit D
7 is used
to differentiate between the ASCII
character and a UDC RAM
address. D
7 = 0 enables the ASCII
decoder and D
7 = 1 enables the
UDC RAM. D
0-D6 are used to
input ASCII data and D
0-D3 are
used to input a UDC address.
Figure 2. Logic Levels to Access the Character RAM.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HDSP-2501 | 功能描述:LED 显示器和配件 Yellow 585nm 5x7 Smart Display 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 |
| HDSP-2502 | 功能描述:LED 显示器和配件 Red 626nm 5x7 Smart Display 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 |
| HDSP2502 | 制造商:Avago Technologies 功能描述:LED DISPLAY ALPHANUMERIC |
| HDSP-2503 | 功能描述:LED 显示器和配件 Green 574nm 5x7 Smart Display 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 |
| HDSP2503 | 制造商:Avago Technologies 功能描述:LED DISPLAY ALPHANUMERIC |
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