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Renesas 7134LA25JGI8
- Part No.:
- 7134LA25JGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA25JGI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,394
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Product details
Overview
7134LA25JGI8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 25 ns maximum read cycle time (industrial grade), 1 µA typical full-standby current (ISB3), and battery backup data retention down to 2 V - used in real-time arbitration-free interprocessor communication systems requiring deterministic latency and zero wait states.
For engineers reviewing the 7134LA25JGI8 datasheet, 7134LA25JGI8 pinout, 7134LA25JGI8 application, or 7134LA25JGI8 equivalent, this page delivers verified specifications, validated PLCC-52 pin mapping, industrial-temperature SRAM timing behavior, and direct alternatives for dual-port memory replacement in embedded control, avionics data buffers, and FPGA co-processor interfaces.
Technical Context
The 7134LA25JGI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling concurrent read/write access without on-chip arbitration logic. It supports TTL-compatible 5 V ±10% operation and features independent chip enable (CEL/CER) and output enable (OEL/OER) per port.
Its low-power LA variant achieves 1 µA ISB3 standby current via CMOS-level CE threshold detection and retains data at VCC = 2 V, making it suitable for battery-backed systems. The device requires external contention management when both ports access the same address simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32,768-bit total), two independent addressable ports |
| Read Cycle Time (tRC) | 25 ns max - guarantees sub-40 MHz sustained read throughput per port |
| Full Standby Current (ISB3) | 1 µA typ. - enables ultra-low-power battery backup mode with no active refresh |
| Data Retention Voltage | 2.0 V min - maintains stored data during brownout or main supply loss |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and noise margins |
| Package | 52-pin PLCC (PLG52) - surface-mountable, hermetically sealed ceramic body |
Pinout & Package
7134LA25JGI8 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), measuring 0.75 in × 0.75 in × 0.17 in, with J-lead configuration and pin 1 index mark. All VCC and GND pins must be externally decoupled per datasheet layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access (4K = 212) |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for right-side access |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit parallel data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit parallel data path; direction controlled by R/WR and OER |
| CEL, CER | Chip enable (active low) | Per-port power-down control - high disables port and reduces current to ISB1/ISB3 |
| OEL, OER | Output enable (active low) | Per-port output driver control - high places I/O pins in high-impedance state |
| R/WL, R/WR | Read/write control (active low) | Per-port direction control - low enables write, high enables read (with OE low) |
| VCC | Power supply | Single 5 V ±10% supply; all VCC pins must be connected and decoupled |
| GND | Ground reference | All GND pins must be connected to system ground plane |
| N/C | No connect | Pins 1, 52, and others marked N/C - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent asynchronous ports | Enables simultaneous CPU/FPGA or processor-to-processor memory sharing without arbitration logic or wait states |
| Battery backup data retention | Maintains valid data at 2 V supply - critical for nonvolatile operation during main power failure |
| Ultra-low ISB3 standby current | 1 µA typical - extends battery life in always-on monitoring or safety-critical holdover modes |
| TTL-compatible 5 V interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| MIL-PRF-38535 QML-compliant option | Available in military-grade variants (e.g., 7134LA35CB) for aerospace and defense applications |
Applications
| Avionics Data Buffering | FPGA Co-Processor Interface |
|---|---|
|
Use Scenario: Real-time exchange of sensor telemetry and flight control commands between dual-redundant flight computers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a lock-free shared memory buffer, eliminating arbitration delay and ensuring deterministic <25 ns read response. Use Value: Enables synchronized, wait-state-free data handoff between dissimilar processors operating at different clock domains. |
Use Scenario: High-bandwidth streaming of image frames from FPGA-accelerated vision processing to ARM-based host controller. IC Role / Device Role / Timing Role: Provides FPGA-side write port and CPU-side read port with independent timing, supporting burst transfers at >30 MB/s. Use Value: Eliminates DMA bottlenecks and software overhead by allowing hardware-level memory coherency without cache snooping. |
| Industrial PLC Memory Hub | Medical Imaging Frame Store |
|
Use Scenario: Shared memory between real-time motion control engine and HMI update subsystem in programmable logic controllers. IC Role / Device Role / Timing Role: Acts as deterministic interlock buffer - left port writes motion trajectory data, right port reads for display rendering. Use Value: Guarantees sub-30 ns access jitter required for servo loop synchronization under variable load conditions. |
Use Scenario: Temporary storage of uncompressed DICOM image slices during CT/MRI acquisition before compression and network transfer. IC Role / Device Role / Timing Role: Serves as dual-access frame buffer - acquisition engine writes, display controller reads - with no bus contention. Use Value: Supports continuous 12-bit pixel streaming at 50+ fps while maintaining zero-frame-drop reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1352V-25AC | 25 ns tRC, 3.3 V only, 4K × 16 organization, 52-pin TQFP | Requires voltage translation for 5 V systems; wider data bus suits word-oriented designs | Select if migrating to 3.3 V infrastructure and needing 16-bit data path |
| IDT71V3577S133PFGI | 133 MHz sync interface, 32K × 18, 100-pin TQFP, no battery retention | High-throughput synchronous interface replaces asynchronous dual-port use case | Choose for bandwidth-critical applications where deterministic latency is secondary to aggregate throughput |
Compared with CY7C1352V-25AC and IDT71V3577S133PFGI, the 7134LA25JGI8 uniquely combines industrial-temperature 5 V compatibility, 2 V data retention, and true asynchronous dual-port operation - making it irreplaceable in legacy 5 V safety-critical systems requiring zero-wait-state memory arbitration.
Availability
7134LA25JGI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data concentrators, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for 7134LA25JGI8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The 7134LA25JGI8 belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for deterministic, arbitration-free interprocessor communication in harsh-environment embedded systems.
FAQ
What is the maximum operating temperature range for the 7134LA25JGI8?
The 7134LA25JGI8 is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the ordering information table and DC operating conditions section of the Renesas datasheet. This range is explicitly assigned to the "I" suffix in the part number and applies to all electrical and timing specifications unless otherwise noted.
Does the 7134LA25JGI8 support battery backup data retention, and at what voltage?
Yes, the 7134LA25JGI8 supports battery backup data retention down to 2.0 V, a feature exclusive to LA-series variants. This is verified in Table 7 (Data Retention Characteristics) and the functional description, which states "Battery backup operation-2V data retention (LA only)." The 7134LA25JGI8 maintains stored data at VCC = 2 V with ICCDR ≤ 4 mA.
What package type and pin count does the 7134LA25JGI8 use?
The 7134LA25JGI8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52. This is confirmed in the Ordering Information table (row: "7134LA25JGI8", Pkg. Code "PLG52") and the Pin Configurations section, which provides the top-view diagram labeled "PLG52(4) 52-Pin PLCC".
How does the 7134LA25JGI8 handle simultaneous access to the same memory location from both ports?
The 7134LA25JGI8 does not include internal arbitration logic. When both ports access the same address concurrently, contention may occur - the datasheet explicitly states it is "the user's responsibility to ensure data integrity." Designers must implement external arbitration (e.g., semaphores or priority encoders) or restrict access patterns to avoid simultaneous writes.
What is the typical full-standby current (ISB3) for the 7134LA25JGI8, and under what conditions is it measured?
The 7134LA25JGI8 has a typical full-standby current (ISB3) of 1.0 µA, measured when both CEL and CER are held above VCC – 0.2 V, all inputs are at CMOS levels (VIN > VCC – 0.2 V or < 0.2 V), and f = 0 - per Table 6b. This ultra-low value enables long-term battery backup operation without periodic refresh.
7134LA25JGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134LA25JGI8 FAQ
1.How can I place an order for 7134LA25JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA25JGI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 7134LA25JGI8 reliable?
The price and inventory of 7134LA25JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA25JGI8 is usually 5 days.
3.What payment methods are accepted for 7134LA25JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA25JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA25JGI8?
7134LA25JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA25JGI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 7134LA25JGI8?
For technical support, including 7134LA25JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA25JGI8 requirements.
6.How does Aetrix verify that 7134LA25JGI8 is sourced from the original manufacturer or authorized distributors?
All 7134LA25JGI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 7134LA25JGI8 meets industry standards.
7.What is the process for return or replacement of 7134LA25JGI8?
All 7134LA25JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA25JGI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 7134LA25JGI8 part is unused and in its original packaging.
Return procedure for 7134LA25JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA25JGI8 Tags
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