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X28HC256SI-90 - Renesas Electronics

Description: The X28HC256 is a second generation high performance CMOS 32k x 8 EEPROM. It is fabricated with Intersil’s proprietary, textured poly floating gate technology, providing a highly reliable 5V only nonvolatile memory. The X28HC256 supports a 128-byte page write operation, effectively providing a 24μs/byte write cycle, and enabling the entire memory to be typically rewritten in less than 0. 8s. The X28HC256 also features DATA polling and Toggle bit polling, two methods of providing early end of write detection

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X28HC256SI-90 - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - M28.3
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X28HC256SI-90 - Renesas Electronics  - 3D model - Small Outline Packages - M28.3
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X28HC256SI-90 Details

  • Manufacturer Part Number:

    X28HC256SI-90

  • Brand Name:

    Renesas

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOICW

  • Package Description:

    SOIC-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    M28.3

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.51

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Access Time-Max:

    90 ns

  • JESD-30 Code:

    R-PDSO-G28

  • Length:

    17.9 mm

  • Memory Density:

    262144 bit

  • Memory IC Type:

    EEPROM

  • Memory Width:

    8

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Number of Words:

    32768 words

  • Number of Words Code:

    32000

  • Operating Mode:

    ASYNCHRONOUS

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Organization:

    32KX8

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Parallel/Serial:

    PARALLEL

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Programming Voltage:

    5 V

  • Seated Height-Max:

    2.65 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    NOT SPECIFIED

  • Width:

    7.5 mm

  • Write Cycle Time-Max (tWC):

    5 ms

X28HC256SI-90 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the X28HC256SI-90 is 4.5V to 5.5V, although it can operate from 4.2V to 5.5V with some performance degradation.
  • The HOLD pin should be pulled high during power-up and power-down sequences to prevent unwanted data changes. It's recommended to use a pull-up resistor to ensure a high logic level.
  • The maximum clock frequency for the X28HC256SI-90 is 90 MHz, as indicated by the '-90' suffix in the part number.
  • While the X28HC256SI-90 can operate at 3.3V, it's not recommended as it's a 5V part. Using it at 3.3V may result in reduced performance, increased power consumption, and potential reliability issues.
  • To ensure data retention during power-down, the VCC pin should be reduced to 0V or a voltage below 1.5V, and the CE pin should be held high. This will put the device in a low-power standby mode, retaining the stored data.

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