Copyright © 2013 Future Technology Devices International Limited

1

DS_FT312D USB ANDROID HOST IC Datasheet

Version 1.1

Document No.: FT_000816 Clearance No.: FTDI# 331

Future Technology Devices

DS_FT312D

(USB Android Host IC)

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

and

has

the

following advanced features:



Single chip USB to UART interface.



Entire USB protocol handled on the chip. No

USB specific firmware programming required.



Supports 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.



+3V3Single 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).

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supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology

Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your

statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in

which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary

information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by

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