FT232RL

Product Summary

The FT232RL is the latest device to be added to FTDI range of USB UART interface Integrated Circuit Device. The FT232RL is a USB to serial UART interface with optional clock generator output, and the new FTDIChip-ID security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to serial designs using the FT232RL have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device. The FT232RL adds two new functions compared with its predecessors, effectively making it a “3-in-1” chip for some application areas. The internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz) can be brought out of the FT232RL and used to drive a microcontroller or external logic. A unique number (the FTDIChip-ID.) is burnt into the FT232RL during manufacture and is readable over USB, thus forming the basis of a security dongle which can be used to protect customer application software from being copied.

Parametrics

FT232RL absolute maximum ratings: (1)Storage Temperature: -65℃ to 150℃; (2)Degrees C Floor Life (Out of Bag) At Factory Ambient( 30℃ / 60% Relative Humidity): 168 Hours(IPC/JEDEC J-STD-033A MSL Level 3 Compliant) Hours; (3)Ambient Temperature (Power Applied):-40℃ to 85℃ Degrees C; (4)Vcc Supply Voltage: -0.5 to +6.00 V; (5)D.C. Input Voltage - USBDP and USBDM: -0.5 to +3.8V; (6)D.C. Input Voltage - High Impedance Bidirectionals: -0.5 to +(Vcc +0.5) V; (7)D.C. Input Voltage - All other Inputs: -0.5 to +(Vcc +0.5)V; (8)D.C. Output Current - Outputs: 24mA; (9)DC Output Current - Low Impedance Bidirectionals: 24mA; (10)Power Dissipation (Vcc = 5.25V): 500 mW.

Features

FT232RL features: (1)Single chip USB to asynchronous serial data transfer interface; (2)Entire USB protocol handled on the chip - No USB-specific firmware programming required; (3)UART interface support for 7 or 8 data bits; (4)Fully assisted hardware or X-On / X-Off software handshaking; (5)Data transfer rates from 300 baud to 3 Megabaud (RS422 / RS485 and at TTL levels) and 300 baud to 1 Megabaud (RS232); (6)256 byte receive buffer and 128 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput; (7)FTDI royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases; (8)In-built support for event characters and line break condition; (9)New USB FTDIChip-IDfeature; (10)New configurable CBUS I/O pins; (11)Auto transmit buffer control for RS485 applications; (12)Transmit and receive LED drive signals.

Diagrams