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FT230XQ-R Datasheet(PDF) 31 Page - Future Technology Devices International Ltd. |
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FT230XQ-R Datasheet(HTML) 31 Page - Future Technology Devices International Ltd. |
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31 / 44 page  Copyright © Future Technology Devices International Limited 31 FT230X USB TO BASIC UART IC Version 1.4 Document No.: FT_000566 Clearance No.: FTDI# 260 7.5 LED Interface Any of the CBUS I/O pins can be configured to drive an LED. The FT230X has 3 configuration options for driving LEDs from the CBUS. These are TXLED#, RXLED#, and TX&RXLED#. Refer to Section 3.3 for configuration options. FT230X CBUS[0...3] CBUS[0...3] VCCIO TX TXLED# RXLED# RX 270R 270R Figure 7.7 Dual LED Configuration An example of using the FT230X to drive LEDs is shown in Figure 7.7. In this application one of the CBUS pins is used to indicate transmission of data (TXLED#) and another is used to indicate receiving data (RXLED#). When data is being transmitted or received the respective pins will drive from tri-state to low in order to provide indication on the LEDs of data transfer. A digital one-shot is used so that even a small percentage of data transfer is visible to the end user. FT230X CBUS [0...3] TX& RXLED# 270R VCCIO LED Figure 7.8 Single LED Configuration Another example of using the FT230X to drive LEDs is shown in Figure 7.8. In this example one of the CBUS pins is used to indicate when data is being transmitted or received by the device (TX&RXLED). In this configuration the FT230X will drive only a single LED. |
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