数据搜索系统,热门电子元器件搜索 |
|
ST2225A-D 数据表(PDF) 7 Page - List of Unclassifed Manufacturers |
|
ST2225A-D 数据表(HTML) 7 Page - List of Unclassifed Manufacturers |
7 / 12 page ST2225A 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. LED Display Driver -6- Version:A.025 Operating Ratings Supply Voltage (V DD – V SS ) ..............................+4.75V to 11V Ambient Temperature Range (T A )..................-40℃ to +85℃ Functional Description The ST2225A display driver can drive either 4- or 5-digit alphanumeric LED displays. One of its advantages is its minimal interface requirement with the display or data source. Data transfer is accomplished by sending clock and serial data signals, without any need of an external load signal. This method provides a non-multiplexed, direct drive to the LED display. The data transfer format uses a leading “1” followed by 35 data bits. These 35 data bits are latched after the 36th has been transferred. In this way, data output (refers to the currently displayed characters) changes only if the serial data bits differ from those previously transferred. Display brightness is controlled by the output current for LED displays. A 1nF capacitor should be connected to brightness control pin to prevent oscillations. Figure 1 shows the block diagram of this driver. The output current is set via an external variable resistor, and is typically 27 times greater than the current in brightness control pin. Input data format, as in Figure 4, shows a leading “1” followed by 35 data bits. When the 36th is transferred, a LOAD signal is generated synchronously with the clock high state, thus, the 35 bits of data are loaded into the latches. The low state of the clock is used to generate a RESET signal to clear all shift registers for the next set of data. To allow continuous operation, all shift registers are static master-slaves, with no clear for the master portion of the first register. |
类似零件编号 - ST2225A-D |
|
类似说明 - ST2225A-D |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |