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Renesas 7134SA55JI8
- Part No.:
- 7134SA55JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA55JI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,531
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Product details
Overview
7134SA55JI8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 55 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables concurrent memory access in real-time digital signal processing systems requiring deterministic latency and no wait states.
For engineers reviewing the 7134SA55JI8 datasheet, 7134SA55JI8 pinout, 7134SA55JI8 application, or 7134SA55JI8 equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative parts - all grounded in Renesas' official documentation for the IDT7134SA family.
Technical Context
The 7134SA55JI8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (left: A0L–A11L, I/O0L–I/O7L; right: A0R–A11R, I/O0R–I/O7R), enabling simultaneous read/write operations without on-chip arbitration logic. Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls.
It uses CMOS process technology to achieve 700 mW typical active power and 5 mW typical standby power (SA variant), with full TTL-level compatibility and no external level-shifting required. The device supports battery backup data retention only in LA variants - not applicable to 7134SA55JI8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32,768 bits total), two independent 4K address spaces |
| Max Read Cycle Time | 55 ns - defines minimum clock-to-clock interval for consecutive reads on same port |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; no auxiliary supplies needed |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and motor control |
| Active Power (Typ.) | 700 mW - enables thermal management in dense PCB layouts without forced cooling |
| Standby Current (Typ.) | 5 mA (ISB1, both ports disabled) - reduces system-level quiescent power during idle periods |
| Input/Output Capacitance | 11 pF - ensures signal integrity up to ~30 MHz bus frequencies with standard trace routing |
Pinout & Package
7134SA55JI8 is packaged in a 52-pin PLCC (PLG52) with lead-free green finish, body size 0.75 in × 0.75 in × 0.17 in. Pin 1 is marked by index notch; pins are arranged in counter-clockwise order starting at top-left corner when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus selecting one of 4K locations for left-side access |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus for concurrent right-side memory access |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit parallel data path; direction controlled by R/WL and OE states |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated 8-bit path supporting simultaneous read/write across ports |
| CEL / CER | Chip enable (left/right) | Active-low enables port logic; high disables port and enters ISB1/ISB2 low-power mode |
| 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 on respective I/O bus |
| VCC | Power supply | Single 5 V ±10% rail; all VCC pins must be decoupled locally to GND |
| GND | Ground reference | Common return for all signals and power; multiple GND pins reduce ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables deterministic, contention-aware memory sharing between two independent masters (e.g., DSP + microcontroller) without arbitration logic |
| TTL-compatible interface | Eliminates need for level shifters or bus buffers when interfacing with legacy 5 V logic families |
| Automatic power-down via CE | Reduces dynamic current to ≤5 mA per port when deselected - critical for low-duty-cycle systems |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in factory automation and transportation electronics |
| Multiple package options | PLCC (7134SA55JI8), DIP, LCC, and Flatpack support diverse mechanical and thermal requirements |
Applications
| Motor Control System | Digital Signal Processor Interface |
|---|---|
|
Use Scenario: Real-time exchange of position feedback and PWM command data between FPGA-based motion controller and ARM-based supervisory processor. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared buffer; left port serves FPGA, right port serves ARM, eliminating software handshake overhead. Use Value: Enables sub-100 ns inter-processor data transfer with guaranteed atomicity at hardware level - critical for closed-loop servo stability. |
Use Scenario: Co-processing architecture where DSP handles FFT computation while host MCU manages I/O and scheduling. IC Role / Device Role / Timing Role: Memory bridge allowing simultaneous DMA read (DSP) and write (MCU) to overlapping buffers without stalling either processor. Use Value: Sustains 55 ns read cycles under continuous load, delivering >14 MB/s effective bandwidth per port - sufficient for 16-bit audio stream buffering. |
| Avionics Data Acquisition | Industrial PLC Backplane |
|
Use Scenario: Sensor fusion module aggregating inertial, pressure, and temperature data for flight control unit. IC Role / Device Role / Timing Role: Dual-port RAM stores timestamped sensor samples; left port accepts burst writes from ADC sequencer, right port feeds filtered results to safety-critical CPU. Use Value: Industrial temp rating and MIL-PRF-38535 QML compliance ensure operation in extended environmental stress profiles required for DO-160 testing. |
Use Scenario: Modular I/O chassis with hot-swappable modules communicating via backplane with central controller. IC Role / Device Role / Timing Role: Shared memory node providing deterministic message passing between controller and distributed I/O processors. Use Value: Asynchronous port timing eliminates clock domain crossing issues; 55 ns access supports 18 Mbps backplane throughput with minimal latency jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C135-55JC | 55 ns access, 4K × 8, but requires 5 V ±5% supply and lacks industrial temp grade (0°C to +70°C only) | Not suitable for environments exceeding +70°C; limited to commercial-grade instrumentation | Select only if operating ambient stays below 70°C and tighter VCC tolerance is acceptable |
| AS7C34098B-55JC | 55 ns, 4K × 8, industrial temp (–40°C to +85°C), but uses 3.3 V supply and requires level translation with 5 V systems | Requires external voltage translators for legacy 5 V bus interfaces - adds BOM cost and layout complexity | Prefer only in new 3.3 V designs; avoid in mixed-voltage or retrofit applications |
Compared with CY7C135-55JC and AS7C34098B-55JC, the 7134SA55JI8 uniquely combines industrial temperature range, strict 5 V TTL compatibility, and proven QML qualification - making it the sole choice for safety-critical or field-deployed 5 V systems demanding long-term reliability.
Availability
7134SA55JI8 is available at Aetrix Electronics and suitable for motor control systems, avionics data acquisition, and industrial PLC backplanes requiring stable component supply across extended product lifecycles.
Supply support for 7134SA55JI8 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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family - including 7134SA55JI8 - was originally developed by Integrated Device Technology (IDT) and later acquired by Renesas; it targets high-reliability embedded systems requiring deterministic dual-port memory access without arbitration overhead.
FAQ
What is the operating temperature range for the 7134SA55JI8?
The 7134SA55JI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in Renesas' official ordering information table, where "I" suffix denotes industrial grade, and the device is explicitly listed under the "Temp. Grade" column as "I" for part number 7134SA55JI8. It is not qualified for military (–55°C to +125°C) or commercial (0°C to +70°C) ranges.
Does the 7134SA55JI8 support battery backup data retention?
No, the 7134SA55JI8 does not support battery backup data retention. That feature is exclusive to LA variants (e.g., 7134LA55JI8), as stated in the datasheet's Features section: "Battery backup operation-2V data retention (LA only)." The "SA" in 7134SA55JI8 designates Standard Power, which has higher standby current (5 mW typ.) and no VDR specification.
Which package type is used for the 7134SA55JI8?
The 7134SA55JI8 uses a 52-pin PLCC (Plastic Leaded Chip Carrier) package, identified by code "PLG52." This is confirmed in the Ordering Information table, where "JG" and "JG8" suffixes correspond to PLG52 packaging, and the physical dimensions (0.75 in × 0.75 in × 0.17 in) match the PLCC footprint shown in Drawing 2720 drw 03.
What is the maximum read cycle time specified for the 7134SA55JI8?
The maximum read cycle time for the 7134SA55JI8 is 55 ns, as indicated by the "55" in its part number and verified in Table 2720 tbl 09b under "7134X55" speed grade. This value applies across commercial, industrial, and military temperature ranges for SA variants and defines the minimum interval between successive read operations on the same port.
Is the 7134SA55JI8 pin-compatible with other IDT7134 variants?
Yes, the 7134SA55JI8 shares identical pinout and electrical interface with all IDT7134 variants in the same package - including 7134LA55JI8 and other 52-pin PLCC versions. Pin functions (A0L–A11L, I/O0L–I/O7L, CEL, OEL, R/WL, etc.) are consistent across SA/LA families per the Functional Block Diagram and Pin Configurations drawings, enabling direct substitution where power and retention requirements align.
7134SA55JI8 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:
- 55ns
- Access Time:
- 55 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)
7134SA55JI8 FAQ
1.How can I place an order for 7134SA55JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA55JI8 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 7134SA55JI8 reliable?
The price and inventory of 7134SA55JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA55JI8 is usually 5 days.
3.What payment methods are accepted for 7134SA55JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA55JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA55JI8?
7134SA55JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA55JI8 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 7134SA55JI8?
For technical support, including 7134SA55JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA55JI8 requirements.
6.How does Aetrix verify that 7134SA55JI8 is sourced from the original manufacturer or authorized distributors?
All 7134SA55JI8 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 7134SA55JI8 meets industry standards.
7.What is the process for return or replacement of 7134SA55JI8?
All 7134SA55JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA55JI8, 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 7134SA55JI8 part is unused and in its original packaging.
Return procedure for 7134SA55JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA55JI8 Tags
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