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FT232RL Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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FT232RL Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
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11 / 43 page  Copyright © 2010 Future Technology Devices International Limited 11 Document No.: FT_000053 FT232R USB UART IC Datasheet Version 2.10 Clearance No.: FTDI# 38 Pin No. Name Type Description 16 3V3OUT Output +3.3V output from integrated LDO regulator. This pin should be decoupled to ground using a 100nF capacitor. The purpose of this output is to provide the internal +3.3V supply to the USB transceiver cell and the internal 1.5kΩ pull up resistor on USBDP. Up to 50mA can be drawn from this pin to power external logic if required. This pin can also be used to supply the VCCIO pin. 19 VCC PWR +3.3V to +5.25V supply to the device core. (See Note 1). 24 AGND PWR Device analogue ground supply for internal clock multiplier. Table 3.6 Power and Ground Group Pin No. Name Type Description 5, 12, 13, 23, 25, 29 NC NC No internal connection. Do not connect. 18 RESET# Input Active low reset. Can be used by an external device to reset the FT232R. If not required can be left unconnected, or pulled up to VCC. 26 TEST Input Puts the device into IC test mode. Must be tied to GND for normal operation, otherwise the device will appear to fail. 27 OSCI Input Input 12MHz Oscillator Cell. Optional – Can be left unconnected for normal operation. (See Note 2). 28 OSCO Output Output from 12MHZ Oscillator Cell. Optional – Can be left unconnected for normal operation if internal Oscillator is used. (See Note 2). Table 3.7 Miscellaneous Signal Group Pin No. Name Type Description 30 TXD Output Transmit Asynchronous Data Output. 31 DTR# Output Data Terminal Ready Control Output / Handshake Signal. 32 RTS# Output Request to Send Control Output / Handshake Signal. 2 RXD Input Receiving Asynchronous Data Input. 3 RI# Input Ring Indicator Control Input. When remote wake up is enabled in the internal EEPROM taking RI# low (20ms active low pulse) can be used to resume the PC USB host controller from suspend. 6 DSR# Input Data Set Ready Control Input / Handshake Signal. 7 DCD# Input Data Carrier Detect Control Input. 8 CTS# Input Clear To Send Control Input / Handshake Signal. 9 CBUS4 I/O Configurable CBUS output only Pin. Function of this pin is configured in the device internal EEPROM. Factory default configuration is SLEEP#. See CBUS Signal Options, Table 3.9. 10 CBUS2 I/O Configurable CBUS I/O Pin. Function of this pin is configured in the device internal EEPROM. Factory default configuration is TXDEN. See CBUS Signal Options, Table 3.9. |
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