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X28HC256PIZ-12 - 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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X28HC256PIZ-12 - Renesas Electronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 28 Ld PDIP
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X28HC256PIZ-12 - Renesas Electronics  - 3D model - Dual-In-Line Packages - 28 Ld PDIP
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X28HC256PIZ-12 Details

  • Manufacturer Part Number:

    X28HC256PIZ-12

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    PDIP

  • Package Description:

    DIP-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    E28.6

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.51

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Access Time-Max:

    120 ns

  • JESD-30 Code:

    R-PDIP-T28

  • JESD-609 Code:

    e3

  • Length:

    37.4 mm

  • Memory Density:

    262144 bit

  • Memory IC Type:

    EEPROM

  • Memory Width:

    8

  • 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:

    DIP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Parallel/Serial:

    PARALLEL

  • Programming Voltage:

    5 V

  • Seated Height-Max:

    6.35 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    15.24 mm

  • Write Cycle Time-Max (tWC):

    5 ms

X28HC256PIZ-12 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the X28HC256PIZ-12 is 2.7V to 3.6V, although it can operate from 2.3V to 3.6V 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 an external pull-up resistor to ensure a high logic level.
  • The maximum clock frequency for the X28HC256PIZ-12 is 10 MHz, but it can operate up to 20 MHz with some performance degradation and increased power consumption.
  • A reliable POR circuit can be implemented using an external voltage supervisor IC or a simple RC circuit with a diode and capacitor. The POR circuit should ensure that the device is held in reset until the power supply voltage reaches a stable level.
  • The recommended method for programming the X28HC256PIZ-12 is using a serial programmer or a dedicated programming tool from Renesas Electronics Corporation. The device can also be programmed in-system using a serial interface.

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