25LC640AXT-E/ST Microchip Technology, 25LC640AXT-E/ST Datasheet
25LC640AXT-E/ST
Specifications of 25LC640AXT-E/ST
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25LC640AXT-E/ST Summary of contents
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... Page Size Temp. Ranges 32 Byte I,E 32 Byte I Description: The Microchip Technology Inc. 25AA640A/25LC640A * (25XX640A ) are 64 kbit Serial Electrically Erasable PROMs. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus sep- arate data in (SI) and data out (SO) lines ...
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... 2.5V to 5.5V CC Test Conditions ≥ 2.7V < 2. 1.0 mA, V < 2. -400 μ OUT 5.0V (Note) = 5.5V 10.0 MHz; CLK = 2.5V 5.0 MHz; CLK = 5.5V = 2.5V = 5.5V, Inputs tied 125°C = 5.5V, Inputs tied 85°C © 2008 Microchip Technology Inc. ...
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... Total Endurance™ Model which can be obtained from Microchip’s web site at 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. © 2008 Microchip Technology Inc. 25AA640A/25LC640A Industrial (I -40°C to +85°C A Automotive (E -40° ...
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... Vcc ≤ 5.5V 30 — ns 2.5V ≤ Vcc < 4.5V 60 — ns 1.8V ≤ Vcc < 2.5V 160 — ns — — E/W (N Cycles — (Note 1) (Note 2) — 1. 2.5V to 5.5V CC Test Conditions 3) OTE 2) OTE © 2008 Microchip Technology Inc. ...
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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 © 2008 Microchip Technology Inc. 25AA640A/25LC640A High-Impedance n Don’t Care High-Impedance 14 Don’t Care LSB in 3 Mode 1,1 ...
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... WPEN, WIP, WEL, BP1 and BP0 bits (Figure 2-6). A read attempt of a memory array location will not be possible during a write cycle. When the write cycle is completed, the write enable latch is reset. © 2008 Microchip Technology Inc. ...
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... Instruction High-Impedance SO © 2008 Microchip Technology Inc. 25AA640A/25LC640A HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Read data from memory array beginning at selected address Write data to memory array beginning at selected address Reset the write enable latch (disable write operations) ...
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... FIGURE 2-2: BYTE WRITE SEQUENCE SCK Instruction High-Impedance SO FIGURE 2-3: PAGE WRITE SEQUENCE SCK Instruction SCK Data Byte DS21830D-page 16-bit Address 16-bit Address Data Byte Twc Data Byte Data Byte Data Byte n (32 max © 2008 Microchip Technology Inc. ...
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... SO FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO © 2008 Microchip Technology Inc. 25AA640A/25LC640A 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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... These bits 1 0 are set by the user issuing the WRSR instruction. These R R bits are nonvolatile, and are shown in Table 2-3. WEL WIP See Figure 2-6 for the RDSR timing sequence. ’, no write Data from STATUS Register © 2008 Microchip Technology Inc. ...
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... See Table 2-4 for a matrix of functionality on the WPEN bit. FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK Instruction Note: An internal write cycle (T WC sequence. © 2008 Microchip Technology Inc. 25AA640A/25LC640A See Figure 2-7 for the WRSR timing sequence. TABLE 2-3: 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-level transition required to enter active state Protected Blocks Unprotected Blocks Protected x Protected x Protected Protected STATUS Register Protected Protected Writable Writable Writable Protected Writable Writable © 2008 Microchip Technology Inc. ...
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... STATUS register write sequence will disable writing to the STATUS register internal write cycle has already begun, WP going low will have no effect on the write. © 2008 Microchip Technology Inc. 25AA640A/25LC640A The WP pin function is blocked when the WPEN bit in the STATUS register is low. This allows the user to ...
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... TSSOP 1st Line Marking Codes 5LCA I728 Device 1L7 25AA640A 25AA640AX 25LC640A 25LC640AX : Example st Line Marking TDFN 1 Device C81 25AA640A-I 828 25LC640A-E 17 25LC640A-I © 2008 Microchip Technology Inc. std mark 5ACA 5LCA std mark 5ACA ACAX 5LCA LCAX std mark C81 C85 C84 ...
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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. Note: Custom marking available. © 2008 Microchip Technology Inc. 25AA640A/25LC640A DS21830D-page 15 ...
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... DS21830D-page 16 I © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640A/25LC640A I φ DS21830D-page 17 ...
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... DS21830D-page 18 © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640A/25LC640A α φ β DS21830D-page 19 ...
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... DS21830D-page 20 © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640A/25LC640A φ I DS21830D-page 21 ...
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... DS21830D-page 22 © 2008 Microchip Technology Inc. ...
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... Microchip Technology Inc. 25AA640A/25LC640A DS21830D-page 23 ...
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... Revision C Features and Description, removed reference to Pb- free packages; Revise Table 1-2: AC Characteristics, parameters 7 and 8; Updated Packing Information/ Package Drawings; Add DFN Package; Removed trademark from SPI. Revision D (10/08) Added TDFN Package; Updated Package Drawings. DS21830D-page 24 © 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. 25AA640A/25LC640A 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? DS21830D-page 26 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21830D © 2008 Microchip Technology Inc. ...
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... EEPROM, Industrial temp., Tape & Reel, SOIC package 25LC640AT-E/ kbit, 2.5V Serial EEPROM, Extended temp., Tape & Reel, SOIC package 25LC640AT-I/ kbit, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, TSSOP package 25LC640AXT-I/ kbit, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, Rotated pinout, TSSOP package DS21830D-page 27 ...
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... NOTES: DS21830D-page 28 © 2008 Microchip Technology Inc. ...
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... 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. ...
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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 ...