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Renesas 7134SA70JI8
- Part No.:
- 7134SA70JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA70JI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
7134SA70JI8 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, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables real-time data exchange between two processors in avionics bus controllers.
For engineers reviewing the 7134SA70JI8 datasheet, 7134SA70JI8 pinout, 7134SA70JI8 application, or 7134SA70JI8 equivalent, key selection criteria include dual-port arbitration-free access, 70 ns speed grade, PLCC-52 package compatibility, and industrial-grade standby current (ISB1 = 25 mA max).
Technical Context
The 7134SA70JI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses 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 but externally managed access.
It uses CMOS process technology for low-power operation: active current typ. 140 mA (both ports), full standby current ISB3 = 1.0 mA (SA version, CMOS-level CE). Data retention at 2 V is not supported-this is an SA (standard power) variant, not LA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports 12-bit addressing per port (A0–A11) |
| Read Cycle Time | 70 ns max; defines minimum time between successive reads on same port |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); single-rail TTL-compatible interface |
| Operating Temperature | –40°C to +85°C; qualified for industrial applications with full parameter guarantee |
| Package | 52-pin PLCC (PLG52); surface-mount, hermetically sealed ceramic body (0.75″ × 0.75″ × 0.17″) |
| Power Consumption | Active ICC = 140 mA typ., ISB1 = 25 mA max (TTL-level CE high, both ports idle) |
| Input/Output Compatibility | TTL input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V); outputs drive ±6 mA (VOL ≤ 0.4 V @ 6 mA) |
Pinout & Package
7134SA70JI8 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), top-view orientation with pin 1 marked by index notch. All VCC (pins 24, 39, 40) must be decoupled; all GND (pins 25, 26, 38) require low-impedance ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; latched on CE/L transition |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus; no electrical or timing coupling to left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O; driven only when OEL = L and CEL = L during read/write |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left I/O; requires external contention management |
| CEL, CER | Chip enable (left/right) | Active-low enables port logic; drives port into ISB1/ISB2 standby when high |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high-Z state prevents bus contention |
| R/WL, R/WR | Read/write control (left/right) | Low = write, high = read; must be stable during address setup (tAS = 0 ns) |
| VCC (24,39,40) | Power supply | Three dedicated pins reduce IR drop; each requires local 0.1 µF ceramic decoupling |
| GND (25,26,38) | Ground reference | Three ground pins ensure return path integrity for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write access from two processors without wait states or arbitration logic |
| 70 ns read cycle time | Supports 14.3 MHz sustained memory bandwidth per port in industrial-temperature systems |
| TTL-compatible interface | Direct connection to legacy 5 V microcontrollers and FPGAs without level-shifting circuitry |
| Low standby power (ISB1 = 25 mA max) | Reduces system-level power budget during processor idle cycles without requiring external power gating |
| PLCC-52 industrial packaging | Hermetic ceramic construction ensures reliability in vibration-prone industrial control enclosures |
Applications
| Avionics Bus Controller | Digital Signal Processor Interface |
|---|---|
Use Scenario: Dual-processor architecture where flight management unit (FMU) writes telemetry to shared RAM while autopilot processor reads it for real-time control loop execution. IC Role / Device Role / Timing Role: Shared memory buffer with deterministic 70 ns access latency; eliminates software handshake overhead. Use Value: Enables sub-millisecond inter-processor communication without CPU intervention or bus arbitration logic. | Use Scenario: Offloading FFT coefficient tables from host MCU to DSP using parallel memory access during pipeline processing. IC Role / Device Role / Timing Role: High-bandwidth data staging RAM; left port connects to MCU, right port to DSP's EMIF. Use Value: Doubles effective memory throughput versus single-port SRAM, sustaining 14.3 MB/s per port at 70 ns cycle. |
| Industrial PLC I/O Module | Military Radar Front-End Buffer |
Use Scenario: Real-time I/O scan engine writes sensor inputs to RAM while control algorithm core reads them for closed-loop decision making. IC Role / Device Role / Timing Role: Deterministic latency memory for time-critical cyclic executive tasks in IEC 61131-3 environments. Use Value: Guarantees worst-case 70 ns read access across –40°C to +85°C, meeting SIL-2 timing constraints. | Use Scenario: Storing digitized RF samples from ADC before FPGA-based pulse compression, with separate read/write paths. IC Role / Device Role / Timing Role: High-reliability dual-port buffer compliant with MIL-PRF-38535 QML Class V screening. Use Value: Ceramic PLCC package withstands shock/vibe; 70 ns speed supports 14.3 MSPS sample buffering without FIFO overflow. |
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-70AXC | 70 ns, 4K × 8, 5 V, PLCC-52-but uses different pinout (e.g., VCC/GND locations differ) and has higher ISB1 (35 mA max) | Requires PCB layout revision due to incompatible pin mapping; less suitable for drop-in replacement in existing PLCC footprints | Select only if redesigning layout and needing Cypress's extended temperature validation support |
| AS7C34098B-70JCIN | 70 ns, 4K × 8, 5 V, PLCC-52-but rated commercial (0°C to +70°C), not industrial; lacks MIL-PRF-38535 qualification | Not qualified for industrial ambient extremes; unsuitable for applications requiring guaranteed operation at –40°C | Consider only for cost-sensitive commercial designs with benign thermal environments |
Compared with CY7C1352V-70AXC and AS7C34098B-70JCIN, the 7134SA70JI8 uniquely combines industrial temperature rating, MIL-PRF-38535 compliance, and pin-compatible PLCC-52 footprint among Renesas-qualified dual-port SRAMs-making it optimal for legacy avionics and ruggedized control systems.
Availability
7134SA70JI8 is available at Aetrix Electronics and suitable for avionics bus controllers, industrial PLC I/O modules, digital signal processor interfaces, and military radar front-end buffers requiring stable component supply across extended lifecycle programs.
Supply support for 7134SA70JI8 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 microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family-acquired from Integrated Device Technology-is engineered for deterministic, arbitration-free dual-processor memory sharing in safety-critical real-time systems.
FAQ
What is the operating temperature range specified for the 7134SA70JI8?
The 7134SA70JI8 is rated for industrial temperature operation from –40°C to +85°C. This range is fully guaranteed across all DC and AC electrical specifications-including 70 ns read cycle time, standby current (ISB1 ≤ 25 mA), and TTL-compatible voltage thresholds-without derating.
Does the 7134SA70JI8 support battery backup data retention?
No, the 7134SA70JI8 does not support battery backup data retention. That feature is exclusive to LA-series variants (e.g., 7134LA70JI8). The "SA" suffix denotes standard power operation, with data retention only guaranteed down to VCC = 2.0 V during full power-down-not under external battery bias.
Which package type is used by the 7134SA70JI8?
The 7134SA70JI8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52. Its dimensions are 0.75 inch × 0.75 inch × 0.17 inch, with pin 1 identified by an index notch in the top-left corner of the package body.
Can the 7134SA70JI8 be used in systems requiring MIL-PRF-38535 compliance?
Yes-the 7134SA70JI8 is manufactured in compliance with MIL-PRF-38535 QML, qualifying it for military-grade applications. However, note that this specific part (7134SA70JI8) carries industrial temperature grading (–40°C to +85°C), not military (–55°C to +125°C); QML compliance applies to process and screening rigor, not ambient rating.
What is the maximum power dissipation of the 7134SA70JI8 under dynamic operation?
Under dynamic operation with both ports active at fMAX, the 7134SA70JI8 draws up to 140 mA typical (ICC = 140 mA) at VCC = 5.0 V, resulting in ~700 mW typical power dissipation. Absolute maximum power is limited to 1.5 W per absolute ratings table, but sustained operation above 700 mW requires thermal design verification.
7134SA70JI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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)
7134SA70JI8 FAQ
1.How can I place an order for 7134SA70JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA70JI8 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 7134SA70JI8 reliable?
The price and inventory of 7134SA70JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA70JI8 is usually 5 days.
3.What payment methods are accepted for 7134SA70JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA70JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA70JI8?
7134SA70JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA70JI8 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 7134SA70JI8?
For technical support, including 7134SA70JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA70JI8 requirements.
6.How does Aetrix verify that 7134SA70JI8 is sourced from the original manufacturer or authorized distributors?
All 7134SA70JI8 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 7134SA70JI8 meets industry standards.
7.What is the process for return or replacement of 7134SA70JI8?
All 7134SA70JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA70JI8, 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 7134SA70JI8 part is unused and in its original packaging.
Return procedure for 7134SA70JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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