FT4222HQ-C-R datasheet(41/49 Pages) FTDI

41 / 49 page

FT4222H USB2.0 TO QUADSPI/I2C BRIDGE IC

1.3

Document No.: FT_001011 Clearance No.: FTDI#405

9.2

Method of Programming the OTP Memory

9.2.1 Programming the OTP memory over USB

The OTP memory on a FT4222H device can be programmed over USB, however, the UMFT4222PROG

Programmer Module should be used to program the IC. Failure to use this module can result in corruption

of the OTP memory which is unrecoverable.

The OTP memory on a FT4222H device can be programmed over USB. This method is the same as for the

MTP on other FTDI devices such as the FT-X series. Please note that in order to program OTP, the

FT4222H requires an additional programming voltage (6.5V) on its VPP pin. The programming board,

UMFT4222PROG, supplies an easy connection bridge between the FT4222H and a USB host for boosting

the VBUS up to 6.5V and for communicating with the programming utility FT_Prog. Further details may

be found in the Datasheet for UMFT4222PROG, the FT4222H programming module.

The FT_Prog utility is provided free-of-charge from the FTDI website, and can be found at the link below.

The user guide is also available at this link.

http://www.ftdichip.com/Support/Utilities.htm#FT_Prog

Additionally, D2XX commands can be used to program the OTP memory from within the user

applications. For more information on the commands available, please see the D2XX Programmers Guide

below.

http://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer's_Guide(FT_000071).p

FT4222HQ-C-R Datasheet(PDF) 41 Page - Future Technology Devices International Ltd.