TN_130 FT232H Errata Technical Note Document Reference No.: FT_000405 Version 1.2 Issue Date: 2013-03-15 The intention of this errata technical note is to give a detailed description of known functional or electrical issues with the FTDI FT232H devices. The current revision of the FT232H is revision C, launched March 2013. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. Future Technology Devices International Limited (FTDI) Unit1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom Tel.: +44 (0) 141 429 2777 Fax: + 44 (0) 141 429 2758 E-Mail (Support): [email protected] Web: http://www.ftdichip.com Copyright © 2013 Future Technology Devices International Limited Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 TABLE OF CONTENTS 1 FT232H Revision .................................................................................... 2 2 Errata History Table – Functional Issues ............................................. 3 2.1 3 Functional Issues of FT232H ................................................................ 4 3.1 Revision A ............................................................................................................ 4 3.1.1 Error switching from 245 FIFO mode to MPSSE mode........................................................... 4 3.1.2 Incorrect status reported on FT1248 MISO line when SS_n is inactive .................................. 4 3.2 3.2.1 3.3 3.3.1 4 Errata History Table – Electrical and Timing Specification Deviations. ......... 3 Revision B ............................................................................................................ 6 Incorrect status reported on FT1248 MISO line when SS_n is inactive .................................. 6 Revision C ............................................................................................................ 7 Incorrect status reported on FT1248 MISO line when SS_n is inactive .................................. 7 Electrical and Timing specification deviations of FT232H ................. 8 4.1 Revision A ............................................................................................................ 8 4.1.1 Suspend Timer Failure ............................................................................................................ 8 4.1.2 Internal 3V3 Regulator ............................................................................................................. 9 4.2 4.2.1 4.3 Revision B .......................................................................................................... 10 Internal 3V3 Regulator ........................................................................................................... 10 Revision C .......................................................................................................... 10 5 FT232H Package Markings.................................................................. 11 6 Contact Information............................................................................. 12 Appendix C – Revision History ................................................................. 13 Copyright © 2013 Future Technology Devices International Limited 1 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 1 FT232H Revision FT232H part numbers are listed in Table 1. The letter at the end of date code on the device markings identifies the device revision. The current revision of the FT232H is revision C, launched March 2013. At the time of releasing this Technical Note there is one known minor issue with this silicon revision. A workaround is provided for this issue Part Number Package FT232HL 48 Pin LQFP FT232HQ 48 Pin QFN Table 1 FT232H Part Numbers This errata technical note covers the revisions of FT232H listed in Table 2. Revision Notes A First device revision (not released) B Second device revision (Released March 2011) C Third device revision (Released March 2013) Table 2 FT232H Revisions Copyright © 2013 Future Technology Devices International Limited 2 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 2 Errata History Table – Functional Issues Functional Problem Short description Errata occurs in device revision FT232H Error switching from 245 FIFO mode to MPSSE mode A,B FT232H FT232H Incorrect status reported on FT1248 MISO line when SS_n is B inactive Incorrect status reported on FT1248 MISO line when SS_n is C inactive 2.1 Errata History Table – Electrical and Timing Specification Deviations. Deviations Short description Errata occurs in device revision The USB specification requires a Suspend timer failure (USB maximum time to suspend of Chapter 9 Compliance) 3.125ms. The device takes up A to 4ms to suspend. Device VCC is designed to Fault with internal 3V3 regulator. operate between 3V3 and 5V however with this errata the A,B supply should not be set below 4.3V for correct operation. Copyright © 2013 Future Technology Devices International Limited 3 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 3 Functional Issues of FT232H 3.1 Revision A 3.1.1 Error switching from 245 FIFO mode to MPSSE mode Introduction: The FT232H may switch from one of the EEPROM configurable modes to MPSSE mode during runtime by calling the FT_SetBitMode call in the software application. Issue: If the device is configured to be in 245 FIFO mode (external EEPROM) and the application switches the mode to MPSSE, spurious accesses to the RD# or WR lines can cause the MPSSE protocol to corrupt. This only affects the device if 245 FIFO mode is the operational state define in the external EEPROM. Workaround: Assuming 245 FIFO mode was not required prior to accessing MPSSE then selecting UART mode in the external EEPROM would prevent the problem. This issue is corrected at silicon revision B. Package specific: The effected packages are listed in Table 3. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 3 3.1.2 Incorrect status reported on FT1248 MISO line when SS_n is inactive Introduction: The FT232H has an FT1248 mode. This mode uses a MISO line to indicate the status of the device (e.g buffers full / empty) Issue: The bug is minor and system will not lose data but the status while SS_n is inactive can indicate that data can be written or read. However when starting a command the status on the MISO line on the clock cycle after the command is not correct. Workaround: Ignore the status on the MISO line on the cycle after the command and only look at the ACK status on the data phase of the FT1248. This will correctly reflect the status which was present while SS_n was inactive. Copyright © 2013 Future Technology Devices International Limited 4 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 Package specific: The effected packages are listed in Table 4. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 4 Copyright © 2013 Future Technology Devices International Limited 5 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 3.2 Revision B 3.2.1 Incorrect status reported on FT1248 MISO line when SS_n is inactive Introduction: The FT232H has an FT1248 mode. This mode uses a MISO line to indicate the status of the device (e.g buffers full / empty) Issue: The bug is minor and system will not lose data but the status while SS_n is inactive can indicate that data can be written or read. However when starting a command the status on the MISO line on the clock cycle after the command is not correct. Workaround: Ignore the status on the MISO line on the cycle after the command and only look at the ACK status on the data phase of the FT1248. This will correctly reflect the status which was present while SS_n was inactive. Package specific: The effected packages are listed in Table 4. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 5 Copyright © 2013 Future Technology Devices International Limited 6 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 3.3 Revision C 3.3.1 Incorrect status reported on FT1248 MISO line when SS_n is inactive Introduction: The FT232H has an FT1248 mode. This mode uses a MISO line to indicate the status of the device (e.g buffers full / empty) Issue: The bug is minor and system will not lose data but the status while SS_n is inactive can indicate that data can be written or read. However when starting a command the status on the MISO line on the clock cycle after the command is not correct. Workaround: Ignore the status on the MISO line on the cycle after the command and only look at the ACK status on the data phase of the FT1248. This will correctly reflect the status which was present while SS_n was inactive. Package specific: The effected packages are listed in Table 4. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 6 Copyright © 2013 Future Technology Devices International Limited 7 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 4 Electrical and Timing specification deviations of FT232H 4.1 Revision A 4.1.1 Suspend Timer Failure Introduction: The FT232H has the ability to be put into suspend by the host to conserve power usage. Issue: The USB specification chapter 9 compliance tests require the device to go into suspend within 3.125ms. The device is taking up to 4ms to enter suspend state. Workaround: This issue is corrected at silicon revision B. Package specific: The effected packages are listed in Table 5. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 7 Copyright © 2013 Future Technology Devices International Limited 8 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 4.1.2 Internal 3V3 Regulator Introduction: The FT232H uses an internal regulator to generate 3V3 from a 5V source (VREGIN). The source should be variable from 3V3 to 5V. Issue: The supply to the regulator must not drop below 4.3V for the correct 3V3 regulated output to be produced. This only affects self-powered designs where the only board supply is 3V3. Workaround: VREGIN must not be supplied below 4.3V. VREGIN can be powered via the USB bus supply with VCCIO, VPLL and VPHY powered with 3.3 volts. Package specific: The effected packages are listed in Table 6. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 8 Copyright © 2013 Future Technology Devices International Limited 9 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 4.2 Revision B 4.2.1 Internal 3V3 Regulator Introduction: The FT232H uses an internal regulator to generate 3V3 from a 5V source (VREGIN). The source should be variable from 3V3 to 5V. Issue: The supply to the regulator must not drop below 4.3V for the correct 3V3 regulated output to be produced. This only affects self-powered designs where the only board supply is 3V3. Workaround: VREGIN must not be supplied below 4.3V. VREGIN can be powered via the USB bus supply with VCCIO, VPLL and VPHY powered with 3.3 volts. Package specific: The effected packages are listed in Table 7. Package Applicable (Yes/No) FT232HL Y FT232HQ Y Table 9 4.3 Revision C No known issues at revision C. Copyright © 2013 Future Technology Devices International Limited 10 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 5 FT232H Package Markings FT232H is available in a RoHS Compliant package, 48 pin LQFP and 48 pin QFN. An example of the markings on the package is shown in Figure 3-1. Line 1 – FTDI LOGO Line 2 – Date code and revision Line 3 – FTDI Part Number Dimensions are in mm Figure 5-1 Package Markings – FT232HQ Line 1 – FTDI LOGO Line 2 – Date code and revision Line 3 – FTDI Part Number Dimensions are in mm Figure 5-2 Package Markings – FT232HL Copyright © 2013 Future Technology Devices International Limited 11 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 6 Contact Information Head Office – Glasgow, UK Branch Office – Hillsboro, Oregon, USA Future Technology Devices International Limited Unit 1, 2 Seaward Place, Centurion Business Park Glasgow G41 1HH United Kingdom Tel: +44 (0) 141 429 2777 Fax: +44 (0) 141 429 2758 Future Technology Devices International Limited (USA) 7130 SW Fir Loop Tigard, OR 97223 USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) E-Mail (Sales) E-Mail (Support) E-Mail (General Enquiries) [email protected] [email protected] [email protected] Branch Office – Taipei, Taiwan Future Technology Devices International Limited (Taiwan) 2F, No. 516, Sec. 1, NeiHu Road Taipei 114 Taiwan , R.O.C. Tel: +886 (0) 2 8791 3570 Fax: +886 (0) 2 8791 3576 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) [email protected] [email protected] [email protected] Branch Office – Shanghai, China Future Technology Devices International Limited (China) Room 1103, No.666 West Huaihai Road, Shanghai, 200052 China Tel: +86 21 62351596 Fax: +86 21 62351595 E-mail (Sales) [email protected] E-mail (Support) [email protected] (General Enquiries) [email protected] [email protected] [email protected] [email protected] Branch Office – Singapore Future Technology Devices International Limited (Singapore) 178 Paya Lebar Road #07-03/04/05 Singapore 409030 Tel: +65 6841 1174 Fax: +65 6841 6071 E-mail (Support) E-mail (General Enquiries) [email protected] [email protected] Web Site http://ftdichip.com System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level performance requirements. All application-related information in this document (including application descriptions, suggested FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640 Copyright © 2013 Future Technology Devices International Limited 12 Document Reference No.: FT_000405 TN_130 FT232H Errata Technical Note Version 1.2 Clearance No.: FTDI# 201 Appendix C – Revision History Version 1.0 First Release 16/02/2011 Version 1.1 Update to include 3V3 regulator 28/01/2013 Version 1.2 Update Device to Revision C 15/03/2013 Copyright © 2013 Future Technology Devices International Limited 13