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71256L20YG - Renesas Electronics

Description: The 71256 5V CMOS SRAM is organized as 32K x 8. The circuit also offers a reduced power standby mode for significant system level power and cooling savings. The low-power (L) version also offers a battery backup data retention capability allowing operation off a 2V battery. Fully static asynchronous circuitry is used; no clocks or refreshes are required for operation. Military grade product is available.

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PCB Footprints
71256L20YG - Renesas Electronics PCB footprint - Other - Other - 71256L35YG8-2
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3D Models
71256L20YG - Renesas Electronics  - 3D model - Other - 71256L35YG8-2
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71256L20YG Details

  • Manufacturer Part Number:

    71256L20YG

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOJ

  • Pin Count:

    28

  • Manufacturer Package Code:

    PJG28

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.41

  • Factory Lead Time:

    4 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Access Time-Max:

    20 ns

  • I/O Type:

    COMMON

  • JESD-30 Code:

    R-PDSO-J28

  • JESD-609 Code:

    e3

  • Length:

    17.9324 mm

  • Memory Density:

    262144 bit

  • Memory IC Type:

    STANDARD SRAM

  • 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:

    70 °C

  • Organization:

    32KX8

  • Output Enable:

    YES

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOJ

  • Package Equivalence Code:

    SOJ28,.34

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Parallel/Serial:

    PARALLEL

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    3.556 mm

  • Standby Current-Max:

    0.0006 A

  • Standby Voltage-Min:

    4.5 V

  • Supply Current-Max:

    0.135 mA

  • 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:

    COMMERCIAL

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    J BEND

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    40

  • Width:

    7.5184 mm

71256L20YG Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (APL-AN-1201) which includes thermal design considerations, such as keeping the thermal pad connected to a solid ground plane and using thermal vias to dissipate heat.
  • Renesas recommends following the guidelines in their reliability handbook (Renesas Reliability Handbook, Rev. 2.00) for high-temperature operation, including derating the device, using thermal protection, and ensuring proper cooling.
  • Renesas recommends using a low-ESR ceramic capacitor with a capacitance of 10uF to 22uF and a voltage rating of 25V or higher for the input capacitor (CIN). The specific requirements may vary depending on the application and operating conditions.
  • Renesas provides a troubleshooting guide in their application note (APL-AN-1202) which includes steps to identify and resolve common issues related to output voltage regulation and stability, such as checking the input voltage, output load, and feedback loop.
  • Renesas provides guidelines for setting the soft-start and tracking functions in their application note (APL-AN-1203). The recommended settings depend on the specific application requirements and operating conditions.

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