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X28HC256SIZ-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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X28HC256SIZ-90 - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - MDP0027
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X28HC256SIZ-90 - Renesas Electronics  - 3D model - Small Outline Packages - MDP0027
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X28HC256SIZ-90 Details

  • Manufacturer Part Number:

    X28HC256SIZ-90

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOICW

  • Package Description:

    SOIC-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    MDP0027

  • 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

  • JESD-609 Code:

    e3

  • 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):

    260

  • 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 Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

  • Write Cycle Time-Max (tWC):

    5 ms

X28HC256SIZ-90 Frequently Asked Questions (FAQs)

  • The X28HC256SIZ-90 can operate from -40°C to +85°C.
  • The X28HC256SIZ-90 has an internal POR circuit that resets the device when power is applied. The POR sequence is automatically handled by the device, and no external circuitry is required.
  • The X28HC256SIZ-90 can operate at clock frequencies up to 5 MHz, but the recommended frequency is 3.3 MHz for optimal performance.
  • To ensure reliable write operations, use the WE# (Write Enable) signal to control the write cycle. The WE# signal should be low during the write cycle, and the address and data lines should be stable before and during the write pulse.
  • The WP# pin is used to prevent accidental writes to the device. When WP# is low, the device is in write-protect mode, and no writes are allowed. When WP# is high, the device is in normal operation, and writes are allowed.

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