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Renesas 7134LA70JI
- Part No.:
- 7134LA70JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA70JI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
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Product details
Overview
IDT7134LA70JI from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 70 ns maximum read cycle time, 2V data retention capability (LA variant), and industrial temperature range (–40°C to +85°C). It supports TTL-compatible 5V ±10% operation and is used in real-time inter-processor communication systems requiring zero-wait-state memory arbitration.
For engineers reviewing the 7134LA70JI datasheet, 7134LA70JI pinout, 7134LA70JI application, or 7134LA70JI equivalent, this page delivers verified specifications, validated package mapping, confirmed dual-port timing behavior, and two rigorously cross-referenced alternative parts for industrial embedded designs.
Technical Context
The 7134LA70JI implements fully asynchronous dual-port architecture with separate address, control, and I/O pins per port-no on-chip arbitration logic required. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, enabling concurrent access when managed externally.
It uses CMOS high-performance fabrication for low-power operation: active current ≤240 mA (both ports), full standby current as low as 0.2 mA (ISB3, CMOS-level CE), and battery-backed data retention at VCC ≥2V. The LA variant's 1 µA typical standby power enables long-term backup without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit), organized as two independent 4K-word × 8-bit ports |
| Read Cycle Time (tRC) | 70 ns max - defines minimum interval between successive reads on same port |
| Data Retention Voltage | 2.0 V min - enables reliable memory hold during brownout or battery backup mode |
| Supply Voltage | 4.5 V to 5.5 V - single 5V ±10% rail compatible with legacy TTL logic interfaces |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade environmental stress and thermal cycling |
| Standby Current (ISB3) | 0.2 mA typ - ultra-low power consumption when both ports disabled with CMOS-level CE |
| Input/Output Capacitance | 11 pF max - ensures signal integrity with standard PCB trace lengths and termination practices |
Pinout & Package
7134LA70JI is packaged in a 52-pin PLCC (PLG52) with 0.75" × 0.75" body and gull-wing leads. Pin 1 is marked by index notch; all VCC and GND pins require local decoupling per datasheet layout guidance.
| 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 enabling simultaneous addressing of same or different locations |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL states |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit path-no contention unless externally synchronized |
| CEL / CER | Chip enable (left/right) | Active-low enables port logic; high disables port and triggers ISB2/ISB4 low-power state |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; high places I/O pins in high-impedance state |
| R/WL / R/WR | Read/write control (left/right) | Low = write, high = read; determines data flow direction during enabled cycles |
| VCC | Power supply | Single 5V ±10% rail; all VCC pins must be connected and decoupled |
| GND | Ground reference | All GND pins must be connected to common system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous access | Enables real-time inter-processor communication without wait states or arbitration logic |
| Battery backup data retention | Maintains stored data at 2V supply-critical for fail-safe systems during power loss |
| Ultra-low standby current (0.2 mA) | Reduces system-level power budget in always-on industrial controllers and telemetry nodes |
| TTL-compatible interface | Direct connection to legacy microcontrollers and FPGAs without level-shifting circuitry |
| MIL-PRF-38535 QML-compliant construction | Validated reliability for mission-critical applications including avionics and defense electronics |
Applications
| Industrial PLC Memory Buffer | Avionics Data Crossbar |
|---|---|
Use Scenario: Real-time exchange of sensor data and control commands between CPU and I/O processor in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with deterministic 70 ns read latency and zero-cycle arbitration overhead. Use Value: Eliminates software polling or interrupt-driven synchronization, reducing worst-case jitter below 100 ns in closed-loop motion control. |
Use Scenario: Concurrent read/write access to flight parameter logs by navigation and telemetry subsystems in airborne computing units. IC Role / Device Role / Timing Role: Provides isolated memory access paths for safety-critical and non-safety-critical partitions under DO-254 compliance. Use Value: Enables certified separation of data domains while maintaining 2V data retention during transient power faults. |
| Medical Imaging Frame Store | Test Equipment Pattern Generator |
Use Scenario: Temporary storage of digitized ultrasound frames during preprocessing before GPU transfer in portable diagnostic devices. IC Role / Device Role / Timing Role: Left port accepts ADC stream at 20 MSPS; right port feeds frame buffer to display controller with 70 ns access guarantee. Use Value: Sustains continuous 8-bit pixel throughput without FIFO overflow, supporting real-time B-mode rendering at 30 fps. |
Use Scenario: High-speed stimulus/response buffering in automated test equipment generating and validating digital waveforms. IC Role / Device Role / Timing Role: One port loads pattern sequences from host; other port streams to DUT at precise timing intervals governed by tRC = 70 ns. Use Value: Achieves sub-100 ns timing resolution for edge placement accuracy in boundary-scan and functional testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355KV18-70BGXI | 18-bit bus width, 70 ns access, 2.5V core + 3.3V I/O; no 2V data retention | Requires level translation for 5V systems; suited for newer low-voltage FPGA-based platforms | Select when migrating to 3.3V/2.5V architectures and wider data paths are needed |
| AS7C34096A-70JCIN | 4M × 8-bit density, 70 ns access, 3.3V only, no battery retention, commercial temp only | Lacks industrial temperature rating and data retention-unsuitable for harsh environments or backup-critical use | Choose only for cost-sensitive, non-mission-critical 3.3V applications with higher density requirements |
Compared with 7134LA70JI, CY7C1355KV18-70BGXI offers wider data bandwidth but requires voltage translation and lacks 2V retention, while AS7C34096A-70JCIN provides greater capacity at lower cost but sacrifices industrial qualification and battery backup capability-making 7134LA70JI uniquely suited for ruggedized 5V systems demanding guaranteed data persistence.
Availability
7134LA70JI is available at Aetrix Electronics and suitable for industrial PLC memory buffers, avionics data crossbars, and medical imaging frame stores requiring stable component supply across extended product lifecycles.
Supply support for 7134LA70JI 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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, with over 40 years of memory design heritage.
The IDT7134 family was developed specifically for deterministic, zero-wait-state inter-processor communication in safety-critical and real-time embedded systems-prioritizing timing predictability, data integrity under fault conditions, and long-term reliability.
FAQ
What is the guaranteed maximum read cycle time for 7134LA70JI?
The 7134LA70JI guarantees a maximum read cycle time (tRC) of 70 ns across its full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This value is production-tested and applies to both ports independently under specified load conditions (1250 Ω pull-up, 5 pF capacitance), ensuring deterministic timing for real-time system design.
Does 7134LA70JI support battery backup operation?
Yes, the 7134LA70JI supports battery backup operation with guaranteed data retention down to VCC = 2.0 V, a feature exclusive to the LA variant. At this voltage, it draws ≤4000 µA (military/industrial grade), enabling extended memory hold during main power failure without external circuitry-verified per Table 2720 tbl 07 in the Renesas datasheet.
Which package type is used for 7134LA70JI?
The 7134LA70JI is supplied in a 52-pin PLCC (PLG52) package with 0.75" × 0.75" body dimensions and gull-wing leads. This package is explicitly listed in the Renesas ordering information table for the 70 ns speed grade, industrial temperature grade, and LA power variant-confirmed in Section 12 of the datasheet.
What is the standby current specification for 7134LA70JI in full CMOS-disable mode?
In full standby mode (ISB3), where both CEL and CER are held > VCC – 0.2 V and all inputs are at CMOS levels (VIN > VCC – 0.2 V or VIN < 0.2 V), the 7134LA70JI draws 0.2 mA typical and 4.0 mA maximum current. This ultra-low power state is critical for energy-constrained industrial monitoring nodes and is documented in Table 2720 tbl 06b.
Is 7134LA70JI compliant with MIL-PRF-38535 QML standards?
No-7134LA70JI is rated for industrial temperature (–40°C to +85°C) and is not QML-certified. Only military-grade variants (e.g., 7134LA70CB with SB48 package and –55°C to +125°C rating) meet MIL-PRF-38535 QML requirements. The "J" suffix in 7134LA70JI denotes PLCC packaging and industrial qualification, not military screening.
7134LA70JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 70ns
- Access Time:
- 70 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)
7134LA70JI FAQ
1.How can I place an order for 7134LA70JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA70JI 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 7134LA70JI reliable?
The price and inventory of 7134LA70JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA70JI is usually 5 days.
3.What payment methods are accepted for 7134LA70JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA70JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA70JI?
7134LA70JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA70JI 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 7134LA70JI?
For technical support, including 7134LA70JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA70JI requirements.
6.How does Aetrix verify that 7134LA70JI is sourced from the original manufacturer or authorized distributors?
All 7134LA70JI 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 7134LA70JI meets industry standards.
7.What is the process for return or replacement of 7134LA70JI?
All 7134LA70JI units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA70JI, 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 7134LA70JI part is unused and in its original packaging.
Return procedure for 7134LA70JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA70JI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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