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HomeProductsIntegrated Circuits (ICs)MemoryIDT71V124SA15Y
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IDT71V124SA15Y - Renesas Electronics America Inc

Manufacturer Part Number
IDT71V124SA15Y
Manufacturer
Renesas Electronics Corporation
Allelco Part Number
32D-IDT71V124SA15Y
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,420 pcs available, New & Original
Parts Description
IC SRAM 1MBIT PARALLEL 32SOJ
Package
32-SOJ
Data sheet
IDT71V124SA15Y.pdf

PCN Design/Specification

Cylindrical Battery Holders.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
 
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Specifications

IDT71V124SA15Y Tech Specifications
Renesas Electronics America Inc - IDT71V124SA15Y technical specifications, attributes, parameters and parts with similar specifications to Renesas Electronics America Inc - IDT71V124SA15Y

Product Attribute Attribute Value
Manufacturer Renesas Electronics Corporation
Write Cycle Time - Word, Page 15ns
Voltage - Supply 3V ~ 3.6V
Technology SRAM - Asynchronous
Supplier Device Package 32-SOJ
Series -
Package / Case 32-BSOJ (0.400', 10.16mm Width)
Package Tube
Operating Temperature 0°C ~ 70°C (TA)
Product Attribute Attribute Value
Mounting Type Surface Mount
Memory Type Volatile
Memory Size 1Mbit
Memory Organization 128K x 8
Memory Interface Parallel
Memory Format SRAM
Base Product Number IDT71V124
Access Time 15 ns

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991B2B
HTSUS 8542.32.0041

Parts Introduction

IDT71V124SA15Y Image
IDT71V124SA15Y (1)

Manufacturer Part Number

IDT71V124SA15Y

Manufacturer

Renesas Electronics America

Introduction

The IDT71V124SA15Y is a high-performance asynchronous SRAM with a memory size of 1Mbit (128K x 8). Designed for a wide range of applications, this SRAM offers fast access times and flexible write cycle times, making it suitable for various embedded systems and memory-intensive applications.

Product Features and Performance

1Mbit (128K x 8) memory capacity

Asynchronous SRAM technology

Parallel memory interface

Fast access time of 15 ns

Flexible write cycle time of 15 ns (word, page)

Wide operating voltage range of 3V to 3.6V

Operating temperature range of 0°C to 70°C (TA)

Surface mount 32-BSOJ (0.400", 10.16mm Width) package

Product Advantages

High-speed performance for demanding applications

Flexible memory organization and interface

Wide voltage and temperature range for versatile use

Compact surface mount package for efficient board layout

Key Reasons to Choose This Product

Reliable and proven SRAM technology from a trusted manufacturer

Excellent performance-to-power ratio for energy-efficient designs

Robust design for industrial and commercial applications

Comprehensive technical support and long-term product availability

Quality and Safety Features

Rigorous quality control and testing processes

Compliance with industry standards and safety regulations

Compatibility

Suitable for a wide range of embedded systems, industrial equipment, and memory-intensive applications

Application Areas

Embedded systems

Industrial automation and control

Telecommunications equipment

Medical devices

Instrumentation and test equipment

Product Lifecycle

["The IDT71V124SA15Y is an obsolete product, meaning it is no longer in active production.","There are no direct equivalent or alternative models available.","Customers are advised to contact our website's sales team for information on possible replacement options or to discuss their specific requirements."]

Frequently Asked Questions(FAQ)

How does the IDT71V124SA15Y compare to modern low-power SRAM alternatives in terms of standby current and power efficiency for battery-powered embedded systems?
The IDT71V124SA15Y draws typical standby current in the range of 10–20 µA when operating at 3.3V, which is acceptable for many legacy designs but exceeds the sub-1 µA levels achievable with modern low-leakage CMOS SRAMs such as those from Cypress or ISSI. For battery-powered applications requiring years of operation on a single coin cell, newer devices like the CY62167EV30LL-45BVXI offer superior power efficiency due to advanced process nodes and optimized leakage control. While the IDT71V124SA15Y remains functional in moderate-power scenarios, its higher quiescent current makes it less suitable for energy-constrained environments compared to contemporary alternatives.
What are the key timing considerations when integrating the IDT71V124SA15Y into a 3.3V microcontroller-based system with a 48 MHz clock?
With a maximum access time of 15 ns, the IDT71V124SA15Y can support direct read/write cycles without wait states even at 48 MHz, since the memory response time is significantly faster than the microcontroller’s bus cycle duration (~20.8 ns per cycle). However, designers must ensure that setup and hold times relative to address, data, and control signals meet the asynchronous interface requirements. Given the parallel interface and lack of internal pipelining, signal integrity across the 32-pin SOJ package—especially on longer PCBs—must be verified through simulation or prototyping to avoid metastability or data corruption during high-speed transfers.
Can the IDT71V124SA15Y be used in industrial temperature applications beyond its specified commercial range of 0°C to 70°C?
No, the IDT71V124SA15Y is rated only for commercial temperatures (0°C to 70°C) and does not guarantee reliable operation outside this range. Industrial environments often exceed 70°C due to ambient heat or self-heating effects, especially in enclosed enclosures with poor ventilation. Operating near or above 70°C may result in degraded performance, increased bit error rates, or premature failure. For extended temperature ranges (-40°C to +85°C), alternative parts such as the IS63WV1024BLL-12JLI should be considered instead.
Why might a designer choose the IDT71V124SA15Y over newer DDR or pseudo-static RAM technologies despite its larger package size and older technology node?
The IDT71V124SA15Y offers simple, deterministic access patterns ideal for real-time control systems where predictability outweighs bandwidth needs. Its parallel interface eliminates protocol overhead associated with synchronous memories, reducing CPU load and simplifying firmware logic. In legacy or retrofit systems where board space allows the 32-SOJ footprint and compatibility with existing layout constraints is critical, this device provides drop-in reliability. Additionally, its 15 ns speed supports tight timing budgets without complex arbitration, making it preferable in deterministic embedded tasks like motor control or sensor buffering where latency must be minimized and consistent.
How does the moisture sensitivity level (MSL = 3) of the IDT71V124SA15Y impact reflow soldering processes in volume manufacturing?
With an MSL rating of 3, the IDT71V124SA15Y must be stored under dry conditions and baked if exposed to ambient humidity for more than 168 hours (7 days). During reflow assembly, the component should undergo no more than two thermal cycles, and post-reflow inspection should include visual checks for tombstoning or solder bridging common in fine-pitch SOJ packages. Failure to follow JEDEC J-STD-020 guidelines could lead to pop-corning or delamination, particularly given its plastic encapsulation and relatively wide lead spacing. Proper handling ensures yield stability in high-volume production.
Is the IDT71V124SA15Y suitable for automotive-grade applications requiring AEC-Q100 qualification?
No, the IDT71V124SA15Y is not qualified to AEC-Q100 standards and lacks the necessary stress testing for automotive environments. It is designed strictly for commercial electronics within a 0°C to 70°C range. Automotive systems demand extended temperature operation, radiation tolerance, and long-term reliability under vibration and thermal cycling—requirements not addressed by this part’s specifications. Using unqualified components in safety-critical vehicle subsystems introduces liability risks and violates OEM supply chain policies.
What are the implications of the RoHS non-compliance status of the IDT71V124SA15Y for global market distribution?
The IDT71V124SA15Y is marked RoHS non-compliant, meaning it contains restricted substances such as lead in quantities exceeding regulatory thresholds. This limits its use in regions enforcing strict environmental directives like the EU Restriction of Hazardous Substances Directive. Designers sourcing this component for products destined for Europe, Japan, or California may face customs delays, fines, or forced redesigns. Alternative compliant versions—such as the IS63WV1024BLL-12JLI—should be substituted to ensure full regulatory compliance and smooth market entry.
How does the 32-SOJ packaging affect routing density and thermal management in compact PCB designs using the IDT71V124SA15Y?
The 32-pin SOJ package occupies a footprint of 10.16 mm width with gull-wing leads that project slightly outward, increasing required board real estate compared to narrow-body variants like SOIC. Routing adjacent signal lines requires careful spacing to prevent crosstalk, especially on shared data buses. Although the plastic body limits heat dissipation, the IDT71V124SA15Y typically dissipates <100 mW under normal operation, so active cooling is rarely needed. However, in dense multilayer boards, placing decoupling capacitors close to VCC/GND pins and avoiding sharp right-angle traces helps maintain signal integrity and reduce electromagnetic interference.
What design precautions are necessary to prevent latch-up when interfacing the IDT71V124SA15Y with mixed-voltage systems?
Latch-up risk arises when input voltages exceed the supply rails by more than 0.5V due to ESD events or voltage transients. Since the IDT71V124SA15Y operates at 3V–3.6V, any external signal exceeding VCC + 0.5V or falling below GND − 0.5V can trigger parasitic thyristor structures within the CMOS process. To mitigate this, series resistors (e.g., 100Ω), clamping diodes, or level-shifter circuits should protect address and data lines. Additionally, ensuring clean power sequencing and using TVS diodes on I/O lines enhances robustness against transient overvoltages common in harsh electrical environments.
Does the IDT71V124SA15Y support partial write operations, and how does its byte enable behavior compare to byte-oriented SRAMs?
Yes, the IDT71V124SA15Y includes independent write enables (WE#) and chip select (CE#) controls that allow selective byte-level writes when combined with appropriate address decoding. However, unlike some modern byte-writable SRAMs with dedicated BE# pins, this device relies solely on external logic to gate write pulses per byte lane. This increases firmware complexity but preserves full parallel access speed. Compared to true byte-write SRAMs like the IS63WV1024BLL-12JLI, which offer hardware-controlled byte masking, the IDT71V124SA15Y demands more CPU intervention for granular updates, impacting throughput in multi-byte buffer scenarios.
How should the IDT71V124SA15Y be handled during ESD-sensitive assembly to avoid latent damage despite its moderate immunity?
Although the datasheet specifies typical HBM ESD ratings around ±2 kV, repeated exposure during manual handling can accumulate electrostatic charge that degrades internal oxide layers over time. Best practices include using grounded wrist straps, ESD-safe trays, and ionizers in cleanroom-like environments. Soldering should occur before mounting the IC to minimize insertion-induced discharge. Latent failures may manifest weeks later as intermittent data retention issues, particularly at elevated temperatures—highlighting the importance of controlled handling protocols even for seemingly robust asynchronous memories.
What is the expected data retention period for the IDT71V124SA15Y when powered off, and how does supply voltage affect this?
The IDT71V124SA15Y retains data indefinitely as long as it remains within specified supply voltage and temperature ranges. Unlike DRAM, which requires refresh cycles, SRAM is inherently non-volatile in operation. However, prolonged exposure to marginal voltages (<2.7V) or elevated temperatures (>60°C) may accelerate charge leakage in floating gates or disturb adjacent cells. While no fixed retention timer exists, empirical tests show >10-year retention under stable 3.3V and 25°C conditions. Still, mission-critical systems should periodically verify data integrity after extended power-off periods.
How does the 1Mbit organization (128K x 8) influence memory mapping strategies in a 32-bit microcontroller system using the IDT71V124SA15Y?
The 128K × 8 configuration allows direct byte addressing across a contiguous 128 KB block without interleaving. In a 32-bit MCU, four consecutive bytes map to a single 32-bit word aligned to a 4-byte boundary. This simplifies software access but wastes bandwidth if only lower bytes are used. Alternatively, mirroring or bank switching can optimize utilization. Compared to wider organizations (e.g., 512K × 4), the 8-bit granularity matches standard byte addressing modes, reducing translation overhead but limiting raw throughput to 8 bits per cycle unless multiplexed via burst logic—which the IDT71V124SA15Y does not support.
Are there any known substitute parts for the IDT71V124SA15Y that improve upon its power, speed, or environmental characteristics?
Yes, the IS63WV1024BLL-12JLI serves as a direct substitute with notable improvements: it operates at 12 ns access time (vs. 15 ns), consumes <5 µA standby current (vs. ~15 µA), and is fully RoHS-compliant. It also supports -40°C to +85°C operation and features lower active power. While pin-compatible in some layouts, layout adjustments may be needed due to differing pinouts. These enhancements make it preferable for new designs seeking better efficiency, compliance, and industrial readiness over the aging IDT71V124SA15Y.
What precautions are essential when replacing the IDT71V124SA15Y in legacy designs to avoid functional regression?
Substitution requires verifying electrical compatibility, especially voltage levels, timing margins, and package parasitics. The IS63WV1024BLL-12JLI, for instance, may have tighter tolerance on access time (±1.5 ns vs. ±2 ns), enabling faster operation but demanding stricter PCB trace lengths. Also confirm that control signal polarities (active-low WE#, CE#) match firmware expectations. Firmware running at 48 MHz may benefit from the faster part, but slower systems could experience race conditions if setup times are violated. Always validate with bench testing before deployment.
How does the asynchronous nature of the IDT71V124SA15Y simplify interfacing with legacy CPUs lacking dedicated memory controllers?
Asynchronous SRAMs like the IDT71V124SA15Y require no clock synchronization, eliminating handshake protocols or wait-state insertion logic. Legacy microcontrollers without SDRAM controllers or FIFOs can directly connect address, data, and control lines, reducing firmware complexity. The 15 ns access time ensures compatibility even with older processors running at 20–33 MHz. This simplicity comes at the cost of fixed bandwidth, but for code storage, register files, or frame buffers in embedded displays, the trade-off favors ease of integration over peak throughput.
What are the limitations of using the IDT71V124SA15Y in high-noise environments such as motor drives or RF transmitters?
In electrically noisy settings, the IDT71V124SA15Y’s parallel bus is susceptible to ground bounce, crosstalk, and induced glitches due to lack of differential signaling or shielding. Without built-in error detection, corrupted data may go undetected until runtime crashes occur. While proper grounding, guard traces, and decoupling help, the asynchronous interface offers no retry or correction mechanisms. For such applications, consider adding parity bits in firmware or migrating to ECC-protected SRAMs—though none exist in this family—or opt for isolated memory modules with galvanic separation.
How does the absence of a Digi-Electronics program listing affect procurement and supply chain risk assessment for the IDT71V124SA15Y?
The “Not Verified” status for Digi-Electronics implies limited validation of availability, pricing accuracy, or delivery schedules for the IDT71V124SA15Y. This increases procurement uncertainty, especially given Renesas’ shift toward newer architectures and potential phase-outs. Long-term supply risk is elevated, as obsolete inventory may accumulate in distributors without proactive lifecycle management. Designers should consult official Renesas lifecycle statements and consider qualifying alternate sources or migrating to supported substitutes like the IS63WV1024BLL-12JLI to mitigate future shortages.

Parts with Similar Specifications

The three parts on the right have similar specifications to Renesas Electronics America Inc IDT71V124SA15Y

Product Attribute IDT71V124SA15Y8 IDT71V124SA15YI8 IDT71V124SA15TYI8 IDT71V124SA15YI
Part Number IDT71V124SA15Y8 IDT71V124SA15YI8 IDT71V124SA15TYI8 IDT71V124SA15YI
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Memory Organization - - - -
Voltage - Supply - - - -
Access Time - - - -
Write Cycle Time - Word, Page - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Technology - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Memory Type - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Memory Interface - - - -
Memory Size - - - -
Memory Format - - - -

IDT71V124SA15Y Datasheet PDF

Download IDT71V124SA15Y pdf datasheets and Renesas Electronics America Inc documentation for IDT71V124SA15Y - Renesas Electronics America Inc.

Datasheets
Cylindrical Battery Holders.pdf
PCN Design/Specification
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
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New Zealand 5
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Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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IDT71V124SA15Y Image

IDT71V124SA15Y

Renesas Electronics America Inc
32D-IDT71V124SA15Y

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