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71321LA20JG - Renesas Electronics

Description: The 71321 is a high-speed 2K x 8 Dual-Port Static RAM with internal interrupt logic for interprocessor communications. It is designed to be used as a stand-alone 8-bit Dual-Port RAM or as a "MASTER" Dual-Port RAM together with the 71421 "SLAVE" Dual-Port in 16-bit-or-more word width systems which would result in full-speed, error free operation without the need for additional discrete logic. An automatic power down feature, controlled by CE, permits the on chip circuitry of each port to enter a very low sta

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71321LA20JG - Renesas Electronics - PCB symbol
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PCB Footprints
71321LA20JG - Renesas Electronics PCB footprint - Plastic Leaded Chip Carrier - Plastic Leaded Chip Carrier - PLG52
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71321LA20JG Details

  • Manufacturer Part Number:

    71321LA20JG

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    PLCC

  • Pin Count:

    52

  • Manufacturer Package Code:

    PLG52

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.32.00.41

  • Factory Lead Time:

    111 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Access Time-Max:

    20 ns

  • Additional Feature:

    AUTOMATIC POWER DOWN

  • I/O Type:

    COMMON

  • JESD-30 Code:

    S-PQCC-J52

  • JESD-609 Code:

    e3

  • Length:

    19.1262 mm

  • Memory Density:

    16384 bit

  • Memory IC Type:

    MULTI-PORT SRAM

  • Memory Width:

    8

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Ports:

    2

  • Number of Terminals:

    52

  • Number of Words:

    2048 words

  • Number of Words Code:

    2000

  • Operating Mode:

    ASYNCHRONOUS

  • Operating Temperature-Max:

    70 °C

  • Organization:

    2KX8

  • Output Characteristics:

    3-STATE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    QCCJ

  • Package Equivalence Code:

    LDCC52,.8SQ

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER

  • Parallel/Serial:

    PARALLEL

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.572 mm

  • Standby Current-Max:

    0.0015 A

  • Standby Voltage-Min:

    2 V

  • Supply Current-Max:

    0.2 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 (Sn) - annealed

  • Terminal Form:

    J BEND

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    19.1262 mm

71321LA20JG Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide for the 71321LA20JG, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance. It's available on the Renesas website or through their support channels.
  • The 71321LA20JG has a built-in overcurrent protection feature, but it's not enabled by default. To implement overcurrent protection, you need to connect an external resistor to the OCP pin and configure the device accordingly. Refer to the application note AN1844 from Renesas for detailed instructions.
  • Although the datasheet specifies a maximum operating voltage of 5.5V, the VCC pin can tolerate up to 6.5V during power-up for a short duration (typically <100ms). However, it's essential to ensure that the voltage does not exceed 5.5V during normal operation to prevent damage to the device.
  • Renesas provides an I2C bus analyzer tool that can help troubleshoot issues with the I2C interface. Additionally, ensure that the I2C bus is properly terminated, and the clock frequency is within the specified range. Also, check the device's I2C address and configuration to ensure they match the system requirements.
  • Renesas recommends using a TVS (Transient Voltage Suppressor) diode or an ESD protection device with a capacitance of <10pF to protect the 71321LA20JG from electrostatic discharge. The ESD protection device should be connected between the VCC pin and GND.

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71321LA20JG Overview

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