25LC640XT-I/ST Microchip Technology, 25LC640XT-I/ST Datasheet
25LC640XT-I/ST
Specifications of 25LC640XT-I/ST
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25LC640XT-I/ST Summary of contents
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... Microchip Technology Inc. Not recommended for new designs – Please use 25AA640A or 25LC640A. 25AA640/25LC640 Description: Temp The Microchip Technology Inc. 25AA640/25LC640 Ranges * (25XX640 ) Kbit Serial Electrically Erasable PROM [EEPROM]. The memory is accessed via a I ...
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... V = < 2. -400 μ OUT 5.0V (Note 1) = 5.5V 3.0 MHz; CLK = 2.5V 2.0 MHz; CLK = 5.5V = 2.5V = 5.5V, Inputs tied 2.5V, Inputs tied © 2008 Microchip Technology Inc. ...
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... CLK A 3: This parameter is not tested but established 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. © 2008 Microchip Technology Inc. 25AA640/25LC640 Industrial (I -40°C to +85°C ...
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... SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB In High-Impedance SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB Out SO SI DS21223H-page High-Impedance n Don’t Care Don’t Care LSB In 3 Mode 1,1 Mode 0,0 15 LSB Out © 2008 Microchip Technology Inc. ...
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... TABLE 1-3: AC TEST CONDITIONS AC Waveform 0. – 0. 4.0V HI Timing Measurement Reference Level Input Output ≤ 4.0V Note 1: For For V > 4.0V CC © 2008 Microchip Technology Inc. 25AA640/25LC640 FIGURE 1-4: (Note 1) (Note TEST CIRCUIT V CC 2.25 kΩ 100 pF 1.8 kΩ DS21223H-page 5 ...
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... 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. © 2008 Microchip Technology Inc. ...
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... WRDI 0000 0100 RDSR 0000 0101 WRSR 0000 0001 © 2008 Microchip Technology Inc. 25AA640/25LC640 3.3 Write Sequence Prior to any attempt to write data to the 25XX640 array or STATUS register, the write enable latch must be set by issuing the WREN instruction (Figure 3-4). This is done by setting CS low and then clocking out the proper instruction into the 25XX640 ...
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... FIGURE 3-2: BYTE WRITE SEQUENCE CS Instruction High-Impedance SO FIGURE 3-3: PAGE WRITE SEQUENCE SCK Instruction SCK Data Byte DS21223H-page 16-bit Address 16-bit Address 16-bit Address Data Byte Data Out Twc Data Byte Data Byte Data Byte n (32 max © 2008 Microchip Technology Inc. ...
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... SO FIGURE 3-5: WRITE DISABLE SEQUENCE CS SCK SI SO © 2008 Microchip Technology Inc. 25AA640/25LC640 The following is a list of conditions under which the write enable latch will be reset: • Power-up • WRDI instruction successfully executed • WRSR instruction successfully executed • WRITE instruction successfully executed ...
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... The Block Protection (BP0 and BP1) bits indicate WEL WIP which blocks are currently write-protected. These bits are set by the user issuing the WRSR instruction. These bits are nonvolatile. See Figure 3-6 for RDSR timing sequence Data from STATUS Register © 2008 Microchip Technology Inc. ...
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... STATUS register are dis- abled. See Table 3-3 for a matrix of functionality on the WPEN bit. See Figure 3-7 for WRSR timing sequence. FIGURE 3-7: WRITE STATUS REGISTER TIMING SEQUENCE SCK Instruction © 2008 Microchip Technology Inc. 25AA640/25LC640 TABLE 3-2: BP1 Data to STATUS Register ...
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... The device is in low-power Standby mode ( • The write enable latch is reset • high-impedance state • A high-to-low transition required to enter the active state . Protected Blocks Unprotected Blocks Protected Protected Protected Writable Protected Writable Protected Writable STATUS Register Protected Writable Protected Writable © 2008 Microchip Technology Inc. ...
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... Standard marking consists of Microchip part number, year code, week code, traceability code (facility code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. © 2008 Microchip Technology Inc. 25AA640/25LC640 Example: ...
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... DS21223H-page 14 PLO %RG\ >3',3@ © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640/25LC640 PP %RG\ >62,&@ α φ β DS21223H-page 15 ...
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... DS21223H-page 16 PP %RG\ >62,&@ © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640/25LC640 PP %RG\ >76623@ φ I DS21223H-page 17 ...
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... Corrections to Section 1.0, Electrical Characteristics. Revision G Product ID System, Example C: Corrected part number, added “Alternate Pinout” and corrected part number in Header. Updated Trademark and Sales List pages. Revision H (June 2008) Added “Not Recommended” note; Updated Packaging; General updates. DS21223H-page 18 © 2008 Microchip Technology Inc. ...
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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. © 2008 Microchip Technology Inc. 25AA640/25LC640 CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • ...
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... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21223H-page 20 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21223H © 2008 Microchip Technology Inc. ...
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... SPI Serial EEPROM 25LC640T: 64K bit 2.5V SPI Serial EEPROM (Tape and Reel) 25LC640X: 64K bit 2.5V SPI Serial EEPROM in alternate pinout (ST only) 25LC640XT: 64K bit 2.5V SPI Serial EEPROM in alternate pinout Tape and Reel (ST only) Temperature Range I = -40°C to +85° -40° ...
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... NOTES: DS21223H-page 22 © 2008 Microchip Technology Inc. ...
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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, 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: 886-3-572-6459 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 © 2008 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 ...