What are the key features of the FT312D-32Q1C-R?
The FT312D-32Q1C-R is a single-chip USB 2.0-to-UART controller that manages the full USB protocol internally, so no USB firmware programming is needed. It supports USB bulk transfer mode and provides a basic UART interface with RXD, TXD, RTS#, CTS#, and a TX_ACTIVE signal for RS485 control. The device includes large UART buffers (5512 bytes RX, 256 bytes TX), a USB_ERROR indicator, and operates from a 3.3 V supply with 5 V tolerant inputs. It also supports Android Open Accessory Mode and operates over a wide temperature range (–40°C to 85°C).
What is it used for?
The FT312D-32Q1C-R is used to add USB connectivity to microcontrollers or serial devices without complex USB stack development. It is ideal for embedded systems, USB-enabled accessories, industrial equipment, and Android platforms that use UART communication over USB.
Does it have alternative parts?
Yes, similar USB-to-serial interface chips are available from FTDI and other vendors. Alternatives include FTDI’s own FT232 series (e.g., FT232R) or chips from Silicon Labs (e.g., CP2102) and Microchip (e.g., MCP2221). When selecting an alternative, check compatibility of features such as interface type, buffer size, voltage levels, and supported protocols.
