Datasheet

Document No.: FT_000053

FT232R USB UART IC Datasheet Version 2.02

Clearance No.: FTDI# 38

7.4 USB to MCU UART Interface

Figure 7.4 USB to MCU UART Interface

An example of using the FT232R as a USB to Microcontroller (MCU) UART interface is shown in Figure

7.4. In this application the FT232R uses TXD and RXD for transmission and reception of data, and RTS# /

CTS# signals for hardware handshaking. Also in this example CBUS0 has been configured as a 12MHz

output to clock the MCU.

Optionally, RI# could be connected to another I/O pin on the MCU and used to wake up the USB host

controller from suspend mode. If the MCU is handling power management functions, then a CBUS pin can

be configured as PWREN# and would also be connected to an I/O pin of the MCU.