25AA02E48 2K SPI Bus Serial EEPROM with EUI-48™ Node Identity Device Selection Table Part Number VCC Range Page Size Temp. Ranges Packages 25AA02E48 1.8-5.5V 16 Bytes I SN, OT Features: Description: • Pre-programmed Globally Unique, 48-bit Node Address • Compatible with EUI-48™ and EUI-64™ • 10 MHz max. Clock Frequency • Low-Power CMOS Technology: - Max. Write Current: 5 mA at 5.5V - Read Current: 5 mA at 5.5V, 10 MHz - Standby Current: 1 μA at 2.5V • 256 x 8-bit Organization • Write Page mode (up to 16 bytes) • Sequential Read • Self-Timed Erase and Write Cycles (5 ms max.) • Block Write Protection: - Protect none, 1/4, 1/2 or all of array • Built-in Write Protection: - Power-on/off data protection circuitry - Write enable latch - Write-protect pin • High Reliability: - Endurance: 1,000,000 erase/write cycles - Data retention: >200 years - ESD protection: >4000V • Temperature Ranges Supported: - Industrial (I): -40°C to +85°C The Microchip Technology Inc. 25AA02E48 is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. • Pb-Free and RoHS Compliant Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25AA02E48 is available in the standard 8-lead SOIC and 6-lead SOT-23 packages. Package Types (not to scale) Name CS Serial Data Output Write-Protect VSS Ground SCK VCC 6 VSS 2 5 CS SI 3 4 SO Note: VDD CS SO 1 2 8 7 VCC HOLD WP 3 6 SCK VSS 4 5 SI This document is supplemented by the “25AA020A Data Sheet” (DS21833). See Section 2.0 “Functional Description”. Chip Select Input SO HOLD (SN) Function WP SI SOIC (OT) 1 SCK Pin Function Table SOT-23 Serial Data Input Serial Clock Input Hold Input Supply Voltage © 2008 Microchip Technology Inc. Preliminary DS22123A-page 1 25AA02E48 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings(†) VCC .............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias .................................................................................................................-40°C to 85°C ESD protection on all pins ..........................................................................................................................................4 kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an extended period of time may affect device reliability. TABLE 1-1: DC CHARACTERISTICS DC CHARACTERISTICS Param. No. Sym. Characteristic Industrial (I): TA = -40°C to +85°C Min. Max. Units D001 VIH1 High-level Input voltage 0.7 VCC VCC +1 V D002 VIL1 -0.3 0.3 VCC V D003 VIL2 Low-level Input Voltage D004 VOL VCC = 1.8V to 5.5V Test Conditions VCC ≥ 2.7V (Note 1) -0.3 0.2 VCC V VCC < 2.7V (Note 1) Low-level Output Voltage — 0.4 V IOL = 2.1 mA — 0.2 V IOL = 1.0 mA, VCC < 2.5V VCC -0.5 — V IOH = -400 μA D005 VOL D006 VOH High-level Output Voltage D007 ILI Input Leakage Current — ±1 μA CS = VCC, VIN = VSS TO VCC D008 ILO Output Leakage Current — ±1 μA CS = VCC, VOUT = VSS TO VCC D009 CINT Internal Capacitance (all inputs and outputs) — 7 pF TA = 25°C, CLK = 1.0 MHz, VCC = 5.0V (Note 1) D010 ICC Read — 5 mA — 2.5 mA VCC = 5.5V; FCLK = 10.0 MHz; SO = Open VCC = 2.5V; FCLK = 5.0 MHz; SO = Open — — 5 3 mA mA VCC = 5.5V VCC = 2.5V — 1 μA CS = VCC = 2.5V, Inputs tied to VCC or VSS, TA = +85°C Operating Current D011 ICC Write D012 ICCS Note: Standby Current This parameter is periodically sampled and not 100% tested. DS22123A-page 2 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 TABLE 1-2: AC CHARACTERISTICS AC CHARACTERISTICS Param. Sym. No. Characteristic Industrial (I): TA = -40°C to +85°C VCC = 1.8V to 5.5V Min. Max. Units Test Conditions — — — 10 5 3 MHz MHz MHz 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 1 FCLK Clock Frequency 2 TCSS CS Setup Time 50 100 150 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 3 TCSH CS Hold Time 100 200 250 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 4 TCSD CS Disable Time 50 — ns — 5 Tsu Data Setup Time 10 20 30 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 6 THD Data Hold Time 20 40 50 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 7 TR CLK Rise Time — 100 ns (Note 1) 8 TF CLK Fall Time — 100 ns (Note 1) 9 THI Clock High Time 50 100 150 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 10 TLO Clock Low Time 50 100 150 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 11 TCLD Clock Delay Time 50 — ns — 12 TCLE Clock Enable Time 50 — ns — 13 TV Output Valid from Clock Low — — — 50 100 160 ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 14 THO Output Hold Time 0 — ns (Note 1) 15 TDIS Output Disable Time — — — 40 80 160 ns ns ns 4.5V ≤ VCC < 5.5V (Note 1) 2.5V ≤ VCC < 4.5V (Note 1) 1.8V ≤ VCC < 2.5V (Note 1) 16 THS HOLD Setup Time 20 40 80 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V Note 1: This parameter is periodically sampled and not 100% tested. 2: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site at www.Microchip.com. 3: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is complete. © 2008 Microchip Technology Inc. Preliminary DS22123A-page 3 25AA02E48 TABLE 1-2: AC CHARACTERISTICS (CONTINUED) AC CHARACTERISTICS Param. Sym. No. Industrial (I): Characteristic TA = -40°C to +85°C Min. Max. Units VCC = 1.8V to 5.5V Test Conditions 17 THH HOLD Hold Time 20 40 80 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 18 THZ HOLD Low to Output High-Z 30 60 160 — — — ns ns ns 4.5V ≤ VCC < 5.5V (Note 1) 2.5V ≤ VCC < 4.5V (Note 1) 1.8V ≤ VCC < 2.5V (Note 1) 19 THV HOLD High to Output Valid 30 60 160 — — — ns ns ns 4.5V ≤ VCC < 5.5V 2.5V ≤ VCC < 4.5V 1.8V ≤ VCC < 2.5V 20 TWC Internal Write Cycle Time (byte or page) — 5 ms (Note 3) 21 — Endurance 1M — E/W (NOTE 2) Cycles Note 1: This parameter is periodically sampled and not 100% tested. 2: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site at www.Microchip.com. 3: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is complete. TABLE 1-3: AC TEST CONDITIONS AC Waveform: VLO = 0.2V — VHI = VCC - 0.2V (Note 1) VHI = 4.0V (Note 2) CL = 100 pF — Timing Measurement Reference Level Input 0.5 VCC Output 0.5 VCC Note 1: For VCC ≤ 4.0V 2: For VCC > 4.0V DS22123A-page 4 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 FIGURE 1-1: HOLD TIMING CS 17 16 17 16 SCK 18 SO n+2 SI n+2 n+1 19 High-Impedance n n 5 Don’t Care n+1 n-1 n n n-1 HOLD FIGURE 1-2: SERIAL INPUT TIMING 4 CS 2 12 11 7 8 Mode 1,1 3 SCK Mode 0,0 5 SI 6 MSB in LSB in High-Impedance SO FIGURE 1-3: SERIAL OUTPUT TIMING CS 9 3 10 Mode 1,1 SCK Mode 0,0 13 14 SO MSB out SI © 2008 Microchip Technology Inc. 15 ISB out Don’t Care Preliminary DS22123A-page 5 25AA02E48 2.0 FUNCTIONAL DESCRIPTION 2.1 Principles of Operation The 25AA02E48 is a 256-byte Serial EEPROM designed to interface directly with the Serial Peripheral Interface (SPI) port of many of today’s popular microcontroller families, including Microchip’s PIC® microcontrollers. It may also interface with microcontrollers that do not have a built-in SPI port by using discrete I/O lines programmed properly in software to match the SPI protocol. BLOCK DIAGRAM STATUS Register I/O Control Logic HV Generator Memory Control Logic X EEPROM Array Dec Page Latches SI SO Y Decoder CS SCK Sense Amp. R/W Control HOLD WP VCC VSS Note: This data sheet documents only the device’s features and specifications that are in addition to the features and specifications of the 25AA020A device. For information on the features and specifications shared by the 25AA02E48 and 25AA020A devices, see the “25AA020A Data Sheet” (DS21833). DS22123A-page 6 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 3.0 PRE-PROGRAMMED EUI-48™ NODE ADDRESS The 25AA02E48 is programmed at the factory with a globally unique, EUI-48™ and EUI-64™ compatible node address stored in the upper 1/4 of the array and write-protected through the STATUS register. The remaining 1,536 bits are available for application use. The 6-byte EUI-48™ node address value is stored in array locations 0xFA through 0xFF, as shown in Figure 3-2. The first 3 bytes are the Organizationally Unique Identifier (OUI) assigned to Microchip by the IEEE Registration Authority. The remaining 3 bytes are the Extension Identifier, and are generated by Microchip to ensure a globally-unique, 48-bit value. 3.1 FIGURE 3-1: MEMORY ORGANIZATION 00h Standard EEPROM Write-Protected EUI-48™ Block FIGURE 3-2: EUI-64™ Support The pre-programmed EUI-48 node address can easily be encapsulated at the application level to form a globally unique, 64-bit node address for systems utilizing the EUI-64 standard. This is done by adding 0xFFFE between the OUI and the Extension Identifier, as shown below. C0h FFh EUI-48 NODE ADDRESS PHYSICAL MEMORY MAP EXAMPLE 24-bit Organizationally Unique Identifier Description Data 00h Array Address FAh 04h A3h 24-bit Extension Identifier 12h 34h 56h FFh Corresponding EUI-48™ Node Address: 00-04-A3-12-34-56 Corresponding EUI-64™ Node Address: 00-04-A3-FF-FE-12-34-56 3.2 Factory-Programmed Write Protection In order to help guard against accidental corruption of the EUI-48 node address, the BP1 and BP0 bits of the STATUS register are programmed at the factory to ‘0’ and ‘1’, respectively, as shown in the following table: 7 X — 6 X — 5 X — 4 X — 3 BP1 0 2 BP0 1 1 WEL — 0 WIP — This protects the upper 1/4 of the array (0xC0 to 0xFF) from write operations. This array block can be utilized for writing by clearing the BP bits with a Write Status Register (WRSR) instruction. Note that if this is performed, care must be taken to prevent overwriting the EUI-48 value. © 2008 Microchip Technology Inc. Preliminary DS22123A-page 7 25AA02E48 4.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 4-1. 4.5 TABLE 4-1: The SCK is used to synchronize the communication between a master and the 25AA02E48. Instructions, addresses or data present on the SI pin are latched on the rising edge of the clock input, while data on the SO pin is updated after the falling edge of the clock input. PIN FUNCTION TABLE Name SOIC SOT-23 Function Chip Select Input Serial Clock (SCK) CS 1 5 SO 2 4 Serial Data Output WP 3 — Write-Protect Pin 4.6 VSS 4 2 Ground SI 5 3 Serial Data Input Serial Clock Input The HOLD pin is used to suspend transmission to the 25AA02E48 while in the middle of a serial sequence without having to retransmit the entire sequence again. It must be held high any time this function is not being used. Once the device is selected and a serial sequence is underway, the HOLD pin may be pulled low to pause further serial communication without resetting the serial sequence. The HOLD pin must be brought low while SCK is low, otherwise the HOLD function will not be invoked until the next SCK high-tolow transition. The 25AA02E48 must remain selected during this sequence. The SI, SCK and SO pins are in a high-impedance state during the time the device is paused and transitions on these pins will be ignored. To resume serial communication, HOLD must be brought high while the SCK pin is low, otherwise serial communication will not resume. Lowering the HOLD line at any time will tri-state the SO line. SCK 6 1 HOLD 7 — Hold Input VCC 8 6 Supply Voltage 4.1 Chip Select (CS) A low level on this pin selects the device. A high level deselects the device and forces it into Standby mode. However, a programming cycle which is already initiated or in progress will be completed, regardless of the CS input signal. If CS is brought high during a program cycle, the device will go into Standby mode as soon as the programming cycle is complete. When the device is deselected, SO goes to the high-impedance state, allowing multiple parts to share the same SPI bus. A low-to-high transition on CS after a valid write sequence initiates an internal write cycle. After powerup, a low level on CS is required prior to any sequence being initiated. 4.2 Hold (HOLD) Serial Output (SO) The SO pin is used to transfer data out of the 25AA02E48. During a read cycle, data is shifted out on this pin after the falling edge of the serial clock. 4.3 Write-Protect (WP) The WP pin is a hardware write-protect input pin. When it is low, all writes to the array or STATUS register are disabled, but any other operations function normally. When WP is high, all functions, including nonvolatile writes operate normally. At any time, when WP is low, the write enable Reset latch will be reset and programming will be inhibited. However, if a write cycle is already in progress, WP going low will not change or disable the write cycle. See Table 2-4 for the Write-Protect Functionality Matrix. 4.4 Serial Input (SI) The SI pin is used to transfer data into the device. It receives instructions, addresses and data. Data is latched on the rising edge of the serial clock. DS22123A-page 8 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 5.0 PACKAGING INFORMATION 5.1 Package Marking Information Example: 8-Lead SOIC 25A2E48I SN e3 0827 1L7 XXXXXXXT XXXXYYWW NNN 6-Lead SOT-23 Example: 20L7 XXNN 1st Line Marking Code Part Number SOT-23 I Temp. 25AA02E48 Note: Legend: XX...X T Y YY WW NNN e3 Note: Note: Note: 20NN NN = Alphanumeric traceability code Part number or part number code Temperature (I, E) Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code (2 characters for small packages) Pb-free JEDEC designator for Matte Tin (Sn) For very small packages with no room for the Pb-free JEDEC designator e3 , the marking will only appear on the outer carton or reel label. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. Please visit www.microchip.com/Pbfree for the latest information on Pb-free conversion. *Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. © 2008 Microchip Technology Inc. Preliminary DS22123A-page 9 25AA02E48 !"#$% & 2%& %!% 3") ' % 3 $%%"% %% 144)))& &4 3 D e N E E1 NOTE 1 1 2 3 α h b h A2 A c φ L A1 L1 5% & 6&% 7!&($ β 66-- 7 7 78 9 : % 8;% < 0+ < ""33 . < < %"$$* < . 8="% - ""3="% - ,0+ 86% 0+ . >0+ +&$? %@ . < . 2%6% 6 < 2% % 6 -2 2% A < :A 6"3 < . 6"="% ( , < . "$% .A < .A "$%0%%& .A < .A & !"#$%!&'(!%&! %(%")%%%" *$%+% % , & "-"%!"&"$ %! "$ %! %#".&& " & "% -/. 0+1 0 & %#%! ))%!%% -21 $& '! !)%!%%'$$&% ! ) +.0 DS22123A-page 10 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 !"#$% & 2%& %!% 3") ' % 3 $%%"% %% 144)))& &4 3 © 2008 Microchip Technology Inc. Preliminary DS22123A-page 11 25AA02E48 ' (("()% & 2%& %!% 3") ' % 3 $%%"% %% 144)))& &4 3 b 4 N E E1 PIN 1 ID BY LASER MARK 1 2 3 e e1 D A A2 c φ L A1 L1 5% 66-- & 6&% 7!&($ 7 7 78 9 > % .0+ 8!% "6"% 0+ 8;% < ""33 : < . , %"$$ < . 8="% - < , ""3="% - , < : 86% < , 2%6% 6 < > 2% % 6 ,. < : 2% A < ,A 6"3 : < > 6"="% ( < . & & "-"%!"&"$ %! "$ %! %#"&& " & "% -/. 0+1 0 & %#%! ))%!%% ) +:0 DS22123A-page 12 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 APPENDIX A: REVISION HISTORY Revision A (12/08) Original release of this document. © 2008 Microchip Technology Inc. Preliminary DS22123A-page 13 25AA02E48 NOTES: DS22123A-page 14 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: Users of Microchip products can receive assistance through several channels: • Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software • General Technical Support – Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing • Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives • • • • • Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Development Systems Information Line Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com CUSTOMER CHANGE NOTIFICATION SERVICE Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2008 Microchip Technology Inc. Preliminary DS22123A-page 15 25AA02E48 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document. To: Technical Publications Manager RE: Reader Response Total Pages Sent ________ From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ FAX: (______) _________ - _________ Application (optional): Would you like a reply? Device: 25AA02E48 Y N Literature Number: DS22123A Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs? 3. Do you find the organization of this document easy to follow? If not, why? 4. What additions to the document do you think would enhance the structure and subject? 5. What deletions from the document could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS22123A-page 16 Preliminary © 2008 Microchip Technology Inc. 25AA02E48 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X Device Tape & Reel – X Temperature /XX Package Examples: a) b) Device: 25AA02E48 2k-Bit, 1.8V, 16 Byte Page, SPI Serial EEPROM with EUI-48™ Node Identity Tape & Reel: Blank T = = Standard packaging Tape & Reel Temperature Range: I = -40°C to+85°C Package: SN OT = = Plastic SOIC (3.90 mm body), 8-lead SOT-23, 6-lead (Tape and Reel only) © 2008 Microchip Technology Inc. Preliminary c) 25AA02E48-I/SN = 2k-bit, 16-byte page, 1.8V Serial EEPROM, Industrial temp., SOIC package 25AA02E48T-I/SN = 2k-bit, 16-byte page, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25AA02E48T-I/OT = 2k-bit, 16-byte page, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, SOT-23 package DS22123A-page 17 25AA02E48 NOTES: DS22123A-page 18 Preliminary © 2008 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, Accuron, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, rfPIC, SmartShunt and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, WiperLock 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. All other trademarks mentioned herein are property of their respective companies. © 2008, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 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. © 2008 Microchip Technology Inc. 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