25AA040A-I/P Microchip Technology, 25AA040A-I/P Datasheet
25AA040A-I/P
Specifications of 25AA040A-I/P
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25AA040A-I/P Summary of contents
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... TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23. Package Types (not to scale) TSSOP/MSOP (ST, MS SOT-23 (OT SCK HOLD *25XX040A is used in this document as a generic part number for the 25AA040A and the 25LC040A. Packages P, MS, SN, ST, MC MS, SN, ST, MC, OT PDIP/SOIC (P, SN HOLD 7 7 HOLD HOLD 6 6 SCK SCK SCK ...
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... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................6.5V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias ...............................................................................................................-40°C to 125°C ESD protection on all pins ..........................................................................................................................................4 kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...
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... Total Endurance™ Model which can be obtained from our web site: www.microchip.com begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle WC is complete. © 2009 Microchip Technology Inc. 25AA040A/25LC040A Industrial (I -40°C to +85°C A Automotive (E -40°C to +125°C A Min ...
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... TABLE 1-2: AC CHARACTERISTICS (CONTINUED) AC CHARACTERISTICS Param. Sym. Characteristic No HOLD Hold Time HOLD Low to Output HZ High HOLD High to Output HV Valid 20 T Internal Write Cycle Time WC (byte or page) 21 — Endurance 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™ ...
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... SI HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB in SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI © 2009 Microchip Technology Inc. 25AA040A/25LC040A High-impedance n Don’t Care High-impedance 14 Don’t Care LSB in 3 Mode 1,1 ...
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... FUNCTIONAL DESCRIPTION 2.1 Principles of Operation The 25XX040A is a 512-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 microcon- trollers that do not have a built-in SPI port by using dis- crete I/O lines programmed properly in firmware to match the SPI protocol ...
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... High-impedance SO © 2009 Microchip Technology Inc. 25AA040A/25LC040A HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Read data from memory array beginning at selected address 011 Write data to memory array beginning at selected address 010 Reset the write enable latch (disable write operations) ...
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... FIGURE 2-2: BYTE WRITE SEQUENCE SCK Instruction+Address MSb FIGURE 2-3: PAGE WRITE SEQUENCE SCK Instruction+Address MSb SCK Data Byte DS21827F-page Lower Address Byte High-impedance Lower Address Byte Data Byte Twc Data Byte Data Byte Data Byte n (16 max © 2009 Microchip Technology Inc. ...
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... FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO © 2009 Microchip Technology Inc. 25AA040A/25LC040A The following is a list of conditions under which the write enable latch will be reset: • Power-up See • WRDI instruction successfully executed • WRSR instruction successfully executed • WRITE instruction successfully executed • ...
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... Read Status Register Instruction (RDSR) The Read Status Register instruction (RDSR) provides access to the STATUS register. See Figure 2-6 for the RDSR timing sequence. The STATUS register may be read at any time, even during a write cycle. The STATUS register is formatted as follows: ...
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... Table 2-3. FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK Instruction Note: An internal write cycle (T WC sequence. © 2009 Microchip Technology Inc. 25AA040A/25LC040A TABLE 2-3: BP1 Data to STATUS Register High-impedance ...
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... Data Protection The following protection has been implemented to prevent inadvertent writes to the array: • The write enable latch is reset on power-up • A write enable instruction must be issued to set the write enable latch • After a byte write, page write or STATUS register write, the write enable latch is reset • ...
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... WP going low will not change or disable the write cycle. See Table 2-4 for the Write-Protect Functionality Matrix. © 2009 Microchip Technology Inc. 25AA040A/25LC040A 3.4 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 ...
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... Note: 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. DS21827F-page 14 Example: 25AA040A e 3 I/P 1L7 0627 Example: ...
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... Package Marking Information (continued) 8-Lead 2X3 DFN XXX YWW NN 6-Lead SOT-23 XXNN © 2009 Microchip Technology Inc. 25AA040A/25LC040A Example: 421 627 L7 Example: 32L7 DS21827F-page 15 ...
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... DS21827F-page 16 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA040A/25LC040A α φ β DS21827F-page 17 ...
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... DS21827F-page 18 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA040A/25LC040A φ I DS21827F-page 19 ...
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... DS21827F-page 20 I © 2009 Microchip Technology Inc. φ ...
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... Microchip Technology Inc. 25AA040A/25LC040A DS21827F-page 21 ...
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... DS21827F-page 22 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA040A/25LC040A I φ DS21827F-page 23 ...
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... APPENDIX A: REVISION HISTORY Revision B Corrections to Section 1.0, Electrical Characteristics. Revision C Added Packages SOT-23, DFN and X-rotated TSSOP; Revised AC Char., Params. 9, 10; Revised Package Legend. Revision D Removed Preliminary status; Replaced package drawings (Rev. AP); Revise Table 1-1, Param. D004, D007, D008; Revise Table 1-2, Param ,10. ...
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... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2009 Microchip Technology Inc. 25AA040A/25LC040A CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...
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... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 25AA040A/25LC040A Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...
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... Serial EEPROM, Industrial temp., MSOP package 25AA040AT-I/SN = 4k-bit, 16-byte page, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25LC040AT-I/SN = 4k-bit, 16-byte page, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25LC040AT-I/ST = 4k-bit, 16-byte page, 2.5V Serial EEPROM, Industrial temp., Tape & ...
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... NOTES: DS21827F-page 28 © 2009 Microchip Technology Inc. ...
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... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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. ...
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... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...