Copyright © 2013 Future Technology Devices International Limited

1

DS_FT312D USB ANDROID HOST IC Datasheet

Version 1.0

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.



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).



Supports bulk transfer mode

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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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