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AT45DQ321-SHF-B - Renesas Electronics

Description: The AT45DQ321 DataFlash is a member of our System Enhancing class of code and data storage solutions designed with an advanced dual SRAM buffer architecture that makes it the most efficient memory for data logging. It also incorporates a suite of advanced features that save system power, reduce processor overhead, simplify software development, and provide comprehensive data security and integrity options.

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AT45DQ321-SHF-B - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - 8S2 – 8-lead EIAJ SOIC
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AT45DQ321-SHF-B Details

  • Manufacturer Part Number:

    AT45DQ321-SHF-B

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC-W

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.51

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    5.5

  • Clock Frequency-Max (fCLK):

    104 MHz

  • Data Retention Time-Min:

    20

  • Endurance:

    100000 Write/Erase Cycles

  • JESD-30 Code:

    R-PDSO-G8

  • Length:

    5.29 mm

  • Memory Density:

    33554432 bit

  • Memory IC Type:

    FLASH

  • Memory Width:

    8

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Number of Words:

    4194304 words

  • Number of Words Code:

    4000000

  • Operating Mode:

    SYNCHRONOUS

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Organization:

    4MX8

  • Output Characteristics:

    3-STATE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Parallel/Serial:

    SERIAL

  • Programming Voltage:

    3 V

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.16 mm

  • Serial Bus Type:

    SPI

  • Standby Current-Max:

    0.00005 A

  • Supply Current-Max:

    0.022 mA

  • Supply Voltage-Max (Vsup):

    3.6 V

  • Supply Voltage-Min (Vsup):

    2.3 V

  • Supply Voltage-Nom (Vsup):

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Type:

    NOR TYPE

  • Width:

    5.24 mm

  • Write Protection:

    HARDWARE/SOFTWARE

AT45DQ321-SHF-B Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the AT45DQ321-SHF-B is 2.7V to 3.6V, with a typical voltage of 3.3V.
  • The HOLD pin should be pulled high during power-up and power-down sequences to prevent unwanted writes or erases. It's recommended to tie the HOLD pin to VCC through a 1kΩ resistor.
  • The AT45DQ321-SHF-B has a maximum of 10,000 erase cycles per sector, with a total of 8192 sectors.
  • Wear leveling can be implemented by dynamically allocating data to different sectors, using a wear leveling algorithm, and periodically erasing and rewriting data to evenly distribute wear across the device.
  • The recommended method is to poll the RDY/BUSY pin, which goes low during a write or erase operation and returns high when the operation is complete.

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AT45DQ321-SHF-B Overview

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