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Renesas 7134SA25JI8
- Part No.:
- 7134SA25JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA25JI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
7134SA25JI8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 25 ns maximum access time (industrial grade), TTL-compatible 5 V ±10% operation, and 48-pin PLCC package. It enables concurrent read/write access in real-time interprocessor communication systems requiring zero wait states.
For engineers reviewing the 7134SA25JI8 datasheet, 7134SA25JI8 pinout, 7134SA25JI8 application, or 7134SA25JI8 equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), dual-port arbitration-free architecture, low standby current (70 mA typical ISB1), and compatibility with legacy 5 V bus systems.
Technical Context
The 7134SA25JI8 implements fully asynchronous dual-port memory access with separate address, control, and bidirectional 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.
It supports battery backup data retention only in LA variants; the SA variant prioritizes speed over ultra-low-power retention. Power management relies on CE-driven automatic power-down, delivering 700 mW typical active power and 5 mW typical standby power at 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits = 32 Kbit total; supports two independent 8-bit data paths without contention handling logic |
| Access Time | 25 ns max (industrial temp); enables integration into 40 MHz synchronous bus interfaces with no wait-state insertion |
| Supply Voltage | 5.0 V ±10%; compatible with standard TTL logic families and legacy 5 V system rails |
| Operating Temp | –40°C to +85°C; qualified for industrial environments including factory automation and transportation control units |
| Active Current | 140 mA typical (both ports active); determines thermal budget and regulator sizing in compact embedded designs |
| Standby Current | 70 mA typical (ISB1, both ports disabled); critical for low-duty-cycle monitoring applications with periodic wake-up |
| Package | 52-pin PLCC (PLG52); surface-mountable with 0.75″ × 0.75″ footprint and 0.17″ height for space-constrained PCB layouts |
Pinout & Package
7134SA25JI8 is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC, package code PLG52), with pin 1 marked by index notch. All VCC and GND pins must be decoupled locally; unused N/C pins are not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; supports full 4K addressing without external decoding |
| A0R–A11R | Right port address inputs | Independent 12-bit address bus enabling simultaneous access to same or different locations from right side |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state I/O bus; direction controlled by R/WL and OEL; requires external bus transceivers only if shared with other devices |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit data path; eliminates need for external multiplexing in dual-CPU architectures |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; when high, port enters low-power standby (ISB1/ISB2 modes) |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; allows high-impedance state during write cycles or bus sharing |
| R/WL / R/WR | Read/write control (left/right) | Active-low initiates write; high enables read; ensures deterministic timing relative to CE and OE transitions |
| VCC, GND | Power supply | Multiple VCC/GND pairs distributed across package for low-noise operation and reduced ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write access from two processors or peripherals without arbitration overhead |
| 25 ns industrial-grade access time | Meets timing requirements of 40 MHz microcontroller buses and real-time DSP co-processing subsystems |
| TTL-compatible 5 V interface | Direct connection to legacy 5 V logic families (e.g., 74LS, 80Cxx) without level-shifting circuitry |
| Automatic CE-controlled power-down | Reduces standby power to 70 mA typical (ISB1), simplifying thermal design in fanless industrial enclosures |
| 52-pin PLCC packaging | Surface-mountable with robust mechanical retention; supports automated assembly and rework-friendly solder joints |
Applications
| Industrial PLC Communication Buffer | Military Avionics Data Exchange |
|---|---|
|
Use Scenario: Dual-CPU programmable logic controller exchanging status and command data between main CPU and I/O processor. IC Role / Device Role / Timing Role: Shared memory buffer enabling lock-free interprocessor communication with deterministic 25 ns latency. Use Value: Eliminates software arbitration delays and hardware semaphore logic, reducing cycle time by up to 30% versus single-port SRAM + bus arbiter solutions. |
Use Scenario: Real-time flight control system where sensor acquisition and actuator command modules operate on separate processing channels. IC Role / Device Role / Timing Role: Synchronized data exchange hub supporting concurrent read/write at –55°C to +125°C (via military-grade variants). Use Value: Ensures sub-30 ns memory access under extreme thermal stress, meeting DO-254 Level A timing assurance requirements. |
| Test Equipment Pattern Memory | Digital Signal Analyzer Buffer |
|
Use Scenario: Automated test equipment storing stimulus patterns and expected response vectors for high-speed digital IC validation. IC Role / Device Role / Timing Role: High-throughput pattern storage with simultaneous write (pattern load) and read (comparison) operations. Use Value: Enables 40 MHz pattern streaming without pipeline stalls, increasing test throughput by 2.2× compared to sequential-access alternatives. |
Use Scenario: Real-time spectrum analyzer capturing and processing RF baseband samples using parallel processing pipelines. IC Role / Device Role / Timing Role: Dual-port buffer decoupling ADC sampling (write port) from FFT computation (read port) at 25 ns granularity. Use Value: Prevents sample loss during burst-mode acquisition by sustaining >39 MB/s sustained bandwidth across both ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25-100AXI | 4K × 16 organization, 100 MHz QDR interface, 3.3 V core, LVDS-compatible | Requires voltage translation for 5 V systems; suited for high-bandwidth FPGA-based analyzers, not legacy 5 V MCU designs | Select only if migrating to 3.3 V architecture and needing wider data bus or higher clock rates |
| IDT71V32S25YG8 | 32K × 8, 25 ns, 3.3 V, 44-pin SOJ; no dual-port-single-port with fast async access | Lacks true concurrency; requires external arbitration for multi-master use; lower density but smaller footprint | Choose when dual-port functionality is unnecessary and board space is constrained, accepting software arbitration overhead |
Compared with CY7C1354V25-100AXI and IDT71V32S25YG8, the 7134SA25JI8 uniquely delivers native 5 V dual-port operation with industrial temperature rating and PLCC packaging-making it irreplaceable in legacy-reliant, concurrency-critical embedded systems where voltage translation or arbitration logic is unacceptable.
Availability
7134SA25JI8 is available at Aetrix Electronics and suitable for industrial PLC communication buffers, military avionics data exchange, and test equipment pattern memory requiring stable component supply across extended lifecycle programs.
Supply support for 7134SA25JI8 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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to address deterministic, arbitration-free memory sharing in real-time embedded systems-particularly dual-processor control and instrumentation applications.
FAQ
What is the operating temperature range for the 7134SA25JI8?
The 7134SA25JI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (Table 03) and applies specifically to the "I" suffix in the part number, which denotes industrial grade. The device maintains full 25 ns access time performance across this entire range.
Does the 7134SA25JI8 support battery backup data retention?
No, the 7134SA25JI8 does not support battery backup data retention. That feature is exclusive to LA-series variants (e.g., 7134LA25JI8), as explicitly stated in the datasheet's Features section: "Battery backup operation-2V data retention (LA only)." The SA designation indicates Standard Power, optimized for speed-not low-voltage retention.
What package type is used for the 7134SA25JI8?
The 7134SA25JI8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, identified by code PLG52. This is confirmed in the Ordering Information table (Page 12), where "7134SA25JG" and "7134SA25JG8" list PLG52 as the package code, and "J" in the suffix corresponds to PLCC per the ordering guide legend.
Can the 7134SA25JI8 be used in a 3.3 V system?
No-the 7134SA25JI8 is specified for 5 V ±10% operation only (4.5 V to 5.5 V), with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Its DC and AC characteristics-including 25 ns access time-are guaranteed only within that 5 V range. Operation at 3.3 V is outside specification and risks timing violations or functional failure.
How many address lines does the 7134SA25JI8 have per port?
The 7134SA25JI8 has 12 address lines per port: A0L–A11L for the left port and A0R–A11R for the right port. This matches its 4K × 8 organization (212 = 4096 addresses), as verified in the Functional Block Diagram, Pin Configurations (PLG52 drawing), and Truth Table I in the datasheet.
7134SA25JI8 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:
- 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)
7134SA25JI8 FAQ
1.How can I place an order for 7134SA25JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA25JI8 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 7134SA25JI8 reliable?
The price and inventory of 7134SA25JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA25JI8 is usually 5 days.
3.What payment methods are accepted for 7134SA25JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA25JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA25JI8?
7134SA25JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA25JI8 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 7134SA25JI8?
For technical support, including 7134SA25JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA25JI8 requirements.
6.How does Aetrix verify that 7134SA25JI8 is sourced from the original manufacturer or authorized distributors?
All 7134SA25JI8 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 7134SA25JI8 meets industry standards.
7.What is the process for return or replacement of 7134SA25JI8?
All 7134SA25JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA25JI8, 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 7134SA25JI8 part is unused and in its original packaging.
Return procedure for 7134SA25JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA25JI8 Tags
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