8K/16K SPI EEPROM Migration Author: Dragos Ciofu Microchip Technology Inc. INTRODUCTION This migration document describes how to replace the 25XX080A/B or 25XX160A/B devices with newer 25XX080C/D and 25XX160C/D devices, respectively. Note: This device has been designed to perform to the parameters of its data sheet. It has been tested to an electrical specification designed to determine its conformance with these parameters. Due to process differences in the manufacture of this device, this device may have different performance characteristics than its earlier version. These differences may cause this device to perform differently in your application than the earlier version of this device. Current Part Recommended Newer Part 25AA080A 25AA080C 25LC080A 25LC080C 25AA160A 25AA160C 25LC160A 25LC160C 25AA080B 25AA080D 25LC080B 25LC080D 25AA160B 25AA160D 25LC160B 25LC160D There are five topics addressed throughout this document: • • • • • • New package option Absolute maximum ratings DC characteristics AC characteristics AC Test conditions Replacement considerations NEW PACKAGE OPTION With the C/D revision of both the 25XX080 and 25XX160 parts, a new package has been introduced: • 8-Lead Plastic Dual Flat, No Lead Package (MN) – 2 x 3x 0.75 mm Body TDFN, shown in Figure 1. FIGURE 1: TDFN PACKAGE TDFN (MN) CS 1 SO 2 WP 3 VSS 4 Note: 8 VCC 7 HOLD 6 SCK 5 SI For the most current package drawings, please see the Microchip Packaging Specification located at http:// www.microchip.com/packaging. A new option has been respectively added to the Product Identification System where, apart from the already available MS, P, SN and ST options, the new MNY ordering option marking represents an 8-lead 2x3 mm TDFN package. Microchip Technology is continuously improving the fabrication process and the parts that are produced. We recently introduced a new revision of the 25XX080 and the 25XX160 SPI Serial EEPROMs. While the devices are very similar between revisions, we recommend that you review the data sheets for each device to see how these changes may apply to your system requirements. The transition from older A/B devices to newer C/D devices also adds a higher density (smaller) package. 2014 Microchip Technology Inc. DS20005349A-page 1 ABSOLUTE MAXIMUM RATINGS DC CHARACTERISTICS The absolute maximum ratings have been adjusted for VCC, with the lowering of the maximum value to 6.5V from 7.0V. For the ambient temperature under bias parameter, the low end of the range has been increased to -40°C from -65°C. When comparing DC Characteristics for the two revisions, please note that parameters ‘D001 – VIH1’ and ‘D002 – VIH2’ have been merged into the same parameter, ‘D001 – VIH1’. In accordance, the parameter numbers for the remaining parameters have been shifted by one unit (i.e., ‘D011 – ICC Read’ becomes ‘D010 – ICC Read’ in the data sheet for the new revision). Parameter Value for Newer C/D Revision Value for Older A/B Revision VCC 6.5V 7.0V -40°C to +125°C -65°C to +125°C Ambient temperature under bias TABLE 1: The differences in DC Characteristics between the two revisions are listed in Table 1. DC CHARACTERISTICS Parameter No. Value for Newer C/D Revision D001 – VIH1 and D002 – VIH2 merged to D001 – VIH1 0.7 VCC to VCC+1 D003 – VIL1 becomes D002 – VIL1 -0.3V to 0.3 VCC D011 – ICC Read becomes D010 – ICC Read D0012 – ICC Write VCC ≥ 2.7V 5 mA 5 mA 3 mA VCC = 5.5V VCC = 2.5V Value for Older A/B Revision 2.0V to VCC + 1 0.7 VCC to VCC + 1 VCC ≥ 2.7V VCC ≤ 2.7V -0.3V to 0.8V 6 mA 3 mA, VCC = 5.5V AC CHARACTERISTICS For the AC Characteristics, the main differences between the two revisions are the more relaxed CLK Rise and Fall time specifications. TABLE 2: AC CHARACTERISTICS Parameter No. Value for Newer C/D Revision Value for Older A/B Revision 7 – TR 2 μs 500 ns 8 – TF 2 μs 500 ns Please note that for the C/D parts, the load capacitance - CL (as presented in Table 1-3 in the data sheets) has been specified as being CL = 50 pF. DS20005349A-page 2 2014 Microchip Technology Inc. MIGRATION CONSIDERATIONS There are no outstanding issues when migrating from A/B to C/D revisions for the 25XX080 and 25XX160 parts. There are no PCB and assembly requirement differences between revisions, if the package is maintained. However, Microchip’s customers can opt for the more compact TDFN option for the C/D revisions. The significance of the last letter (version) in the product’s name remains consistent, where the lower letter ‘C’ corresponds to a 16-byte page device and the higher letter ‘D’ corresponds to a 32-byte page device. The devices’ parameters remain similar throughout, with a couple of exceptions due to continuous improvement and characterization of Microchip’s parts. The newly characterized parameters ensure reliability for both the end user and integrators. 2014 Microchip Technology Inc. DS20005349A-page 3 NOTES: DS20005349A-page 4 2014 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, MediaLB, MOST, MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. The Embedded Control Solutions Company and mTouch are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet, KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. GestIC is a registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. ISBN: 978-1-63276-735-6 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2014 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. DS20005349A-page 5 Worldwide Sales and Service AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.com Asia Pacific Office Suites 3707-14, 37th Floor Tower 6, The Gateway Harbour City, Kowloon Hong Kong Tel: 852-2943-5100 Fax: 852-2401-3431 India - Bangalore Tel: 91-80-3090-4444 Fax: 91-80-3090-4123 Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 Atlanta Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455 China - Beijing Tel: 86-10-8569-7000 Fax: 86-10-8528-2104 Austin, TX Tel: 512-257-3370 China - Chengdu Tel: 86-28-8665-5511 Fax: 86-28-8665-7889 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Cleveland Independence, OH Tel: 216-447-0464 Fax: 216-447-0643 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Novi, MI Tel: 248-848-4000 Houston, TX Tel: 281-894-5983 Indianapolis Noblesville, IN Tel: 317-773-8323 Fax: 317-773-5453 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 New York, NY Tel: 631-435-6000 San Jose, CA Tel: 408-735-9110 Canada - Toronto Tel: 905-673-0699 Fax: 905-673-6509 DS20005349A-page 6 China - Chongqing Tel: 86-23-8980-9588 Fax: 86-23-8980-9500 China - Hangzhou Tel: 86-571-8792-8115 Fax: 86-571-8792-8116 China - Hong Kong SAR Tel: 852-2943-5100 Fax: 852-2401-3431 China - Nanjing Tel: 86-25-8473-2460 Fax: 86-25-8473-2470 China - Qingdao Tel: 86-532-8502-7355 Fax: 86-532-8502-7205 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8864-2200 Fax: 86-755-8203-1760 China - Wuhan Tel: 86-27-5980-5300 Fax: 86-27-5980-5118 China - Xian Tel: 86-29-8833-7252 Fax: 86-29-8833-7256 India - New Delhi Tel: 91-11-4160-8631 Fax: 91-11-4160-8632 India - Pune Tel: 91-20-3019-1500 Japan - Osaka Tel: 81-6-6152-7160 Fax: 81-6-6152-9310 Japan - Tokyo Tel: 81-3-6880- 3770 Fax: 81-3-6880-3771 Korea - Daegu Tel: 82-53-744-4301 Fax: 82-53-744-4302 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 France - Paris Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Germany - Dusseldorf Tel: 49-2129-3766400 Germany - Munich Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Germany - Pforzheim Tel: 49-7231-424750 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Italy - Venice Tel: 39-049-7625286 Malaysia - Kuala Lumpur Tel: 60-3-6201-9857 Fax: 60-3-6201-9859 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 Malaysia - Penang Tel: 60-4-227-8870 Fax: 60-4-227-4068 Poland - Warsaw Tel: 48-22-3325737 Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Spain - Madrid Tel: 34-91-708-08-90 Fax: 34-91-708-08-91 Sweden - Stockholm Tel: 46-8-5090-4654 UK - Wokingham Tel: 44-118-921-5800 Fax: 44-118-921-5820 Taiwan - Kaohsiung Tel: 886-7-213-7830 Taiwan - Taipei Tel: 886-2-2508-8600 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 China - Xiamen Tel: 86-592-2388138 Fax: 86-592-2388130 China - Zhuhai Tel: 86-756-3210040 Fax: 86-756-3210049 03/25/14 2014 Microchip Technology Inc.