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Home > Embedded ICs > Embedded - Memory > AT25256B-XHL-B

AT25256B-XHL-B

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AT25256B-XHL-B Overview


The Atmel high speed, 256K bit SPI bus serial EEPROMs support SPI modes 0 and 3 operation. The EEPROM is organized as 32,768 words x 8 bits and optimized for industrial and commercial applications where low-power and low-voltage operations are essential.The EEPROM is available in a variety of space-saving packaging options at 1.8 (VCC = 1.8V to 5.5V). The three-wire serial interface consists of a data input, output, and a shift clock. All programming cycles are completely self-timed, and no separate erase cycle is required before write. Block write protection is program enabled and separate program enable and disable instructions are provided for additional data protection. Hardware data protection provided to protect against inadvertent write attempts to the status register. Any serial communication suspension can be accomplished without resetting the serial sequence.

Features

  • Supports SPI modes
  • Low and standard-voltage operation
  • 64-byte page mode and byte write operation
  • Block write protection - Protect 1/4, 1/2 or entire array
  • Write protect pin and write disable instructions for both hardware and software data protection
  • Self-timed write cycle (5ms maximum)
  • High-reliability
  • Endurance - 1000000 write cycles
  • Data retention - 100 years
  • Green product and no Sb/Br

Specifications

  • Mounting Style SMD/SMT

  • Maximum Operating Current 10 mA

  • Organization 32768 x 8

  • Minimum Operating Temperature - 40 C

  • Supply Voltage - Min 1.8 V

  • Access Time 80 ns

  • Memory Size 256 Kbit

  • Package / Case TSSOP-8

  • Operating Supply Voltage 1.8 V to 5.5 V

  • Maximum Clock Frequency 5 MHz

  • Packaging Bulk

  • Maximum Operating Temperature + 85 C

  • Supply Voltage - Max 5.5 V

  • Interface Type SPI

  • Data Retention 100 yr

  • Operating Current 9 mA

  • Factory Pack Quantity 100

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