FT312D - USB 2.0 full speed Host IC bridge between peripheral hardware/systems and an Android platform with a USB device port.

The FTDI FT312D provides a bridge between peripheral hardware/systems and an Android platform with a USB device port. The FT312D will enumerate USB and Android Open Accessory and provide a UART interface for peripheral integration.

The FT312D is a USB 2.0 Full Speed host IC specifically targeted at providing access to peripheral hardware from an Android platform with a USB device port. The device will bridge the USB port to a UART interface via the Android Open Accessory protocol.

Key features:

  • USB 2.0 Full Speed Host
  • USB to UART bridge
  • USB ERROR indicator pin
  • Single power supply operation at 3.3V
  • Internal 1.8V LDO regulator
  • Internal memory for storing configurable strings - allows Android to automatically detect the device and application
  • Extended operating temperature range : -40°C to 85°C
  • Available in Pb-free QFN-32 and LQFP-32 packages (RoHS compliant).

Note: Optimum compatibility requires Android Open Accessory Mode, available in Android platforms 3.1 onwards.

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  • Single chip USB to UART interface.
  • Entire USB protocol handled on the chip. No USB specific firmware programming required.
  • USB bulk transfer mode
  • Basic UART interface with RXD, TXD, RTS#, CTS# pins.
  • TX_ACTIVE signal for controlling transceivers on RS485 interfaces.
  • UART RX buffer size is 5512 bytes
  • UART TX buffer size is 256 bytes
  • USB_ERROR indicator pin
  • Suitable for use on any Android platform supporting Android Open Accessory Mode (Typically 3.1 onwards, however some platforms may port Open Accessory Mode to version 2.3.4)
  • 12MHz oscillator using external crystal.
  • Integrated power-on-reset circuit.
  • +3V3 Single Supply Operation with 5V tolerant inputs.
  • USB 2.0 Full Speed compatible.
  • Extended operating temperature range: -40⁰C to 85⁰C.
  • Available in compact Pb-free 32 Pin LQFP and QFN packages (both RoHS compliant).
  • Supports bulk transfer mode
  • Connecting Android phones to USB accessories
  • Connecting Android tablets to USB accessories
  • Controlling instrumentation from Android devices.
  • Home automation via Android devices
  • Data logging from USB accessories
  • Connecting serial printing devices to Android devices
Part Number Description Pack Size
FT312D-32L1C-R
32-pin LQFP single chip full speed USB Android Host IC Reel of 1,500
FT312D-32L1C-T
32-pin LQFP single chip full speed USB Android Host IC
Tray of 250
FT312D-32Q1C-R
32-pin QFN single chip full speed USB Android Host IC
Reel of 3,000
FT312D-32Q1C-T
32-pin QFN single chip full speed USB Android Host IC
Tray of 260
UMFT311EV Development module for FT311D Each
UMFT311GP FT311 GPIO Board Rev1.0 Each

The FT312D uses the same development platform as the FT311D.

Development Module

The UMFT311EV Development Module uses the FT311D to enable engineers to design for USB accessories connecting to Android platforms via Android Open Accessory mode (typically 3.1 onwards).

FTDI_UMFT311EV_200px

GPIO Shield Board

The UMFT311GP Shield Board can be used together with the UMFT311EV Development Module to to provide faster testing. It has push button switches which function as user GPIO inputs and LED's to provide visual indication of the GPIO output.

FTDI_UMFT311GP_200px

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Last updated: 15 August 2013