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Renesas 7134SA20J
- Part No.:
- 7134SA20J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA20J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,658
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Product details
Overview
IDT7134SA20J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 20 ns read cycle time (commercial grade), TTL-compatible 5 V ±10% operation, and 48-pin PDIP package. It enables concurrent memory access in real-time inter-processor communication, video frame buffering, and military-grade avionics data exchange.
For engineers reviewing the IDT7134SA20J datasheet, IDT7134SA20J pinout, IDT7134SA20J application, or IDT7134SA20J equivalent, key selection criteria include dual-port arbitration-free timing, 700 mW active power, industrial/military temperature support via variant family, and battery-retention capability (LA only) - all critical for deterministic embedded memory subsystems.
Technical Context
The IDT7134SA20J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, allowing simultaneous read/write operations without on-chip arbitration logic. Its CMOS process delivers 20 ns tRC (read cycle time) and 15 ns tWP (write pulse width) at commercial temperature range (0°C to +70°C).
Each port features independent chip enable (CEL/CER), output enable (OEL/OER), and read/write (R/WL/R/WR) controls, with automatic low-power standby activation when CE is high. The device supports TTL-level signaling and requires no external wait-state generation, making it suitable for tightly coupled multiprocessing systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32,768-bit total), dual-port SRAM with independent left/right address/data paths |
| Read Cycle Time (tRC) | 20 ns max - defines minimum clock period for consecutive reads without wait states |
| Write Pulse Width (tWP) | 15 ns min - minimum duration of valid write strobe required for reliable data capture |
| Active Power Consumption | 700 mW typical - enables high-throughput operation without thermal derating in compact enclosures |
| Standby Current (ISB1) | 25 mA max (both ports disabled) - supports low-idle power in multi-port memory banks |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL and mixed-signal 5 V system rails |
| Operating Temperature | 0°C to +70°C (commercial grade) - validated for office, lab, and non-harsh industrial environments |
Pinout & Package
Package: 48-pin plastic dual in-line package (PDG48), 0.600-inch width, through-hole mounting, RoHS-compliant lead finish.
| 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 concurrent right-side access |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated 8-bit path prevents contention during simultaneous access |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; high disables port and enters ISB1 standby 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 bidirectional I/O |
| VCC | Power supply | Single 5 V ±10% rail powers both ports; all VCC pins must be decoupled |
| GND | Ground reference | Common ground for signal integrity; all GND pins require low-inductance connection |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables deterministic, wait-state-free memory access from two independent controllers without arbitration logic |
| 20 ns read cycle time (commercial) | Supports 50 MHz sustained memory bandwidth in real-time DSP and video processing pipelines |
| TTL-compatible 5 V interface | Direct integration with legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Automatic power-down via CE | Reduces standby current to 25 mA (ISB1) when port is deselected, simplifying power management |
| MIL-PRF-38535 QML-compliant variants available | Enables drop-in qualification for aerospace and defense programs requiring certified reliability |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
Use Scenario: Two microprocessors exchange status and command data via shared memory without software handshaking. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox buffer with independent left/right access paths. Use Value: Eliminates CPU polling delays and guarantees sub-20 ns memory coherency between heterogeneous processors. |
Use Scenario: Digital video encoder writes captured frames while decoder reads prior frames for display. IC Role / Device Role / Timing Role: Serves as ping-pong frame buffer with simultaneous write-to-one-port/read-from-other-port operation. Use Value: Enables seamless 60 fps video streaming with no frame-drop risk due to deterministic 20 ns access timing. |
| Avionics Data Acquisition | Industrial PLC Memory Expansion |
Use Scenario: Flight control computer writes sensor telemetry while monitoring unit reads same memory for health checks. IC Role / Device Role / Timing Role: Provides fault-tolerant shared memory with hardware-isolated read/write channels. Use Value: Meets DO-254 deterministic timing requirements with guaranteed 20 ns tRC across 0°C to +70°C range. |
Use Scenario: Programmable logic controller extends local memory for ladder logic variable storage and I/O mapping. IC Role / Device Role / Timing Role: Acts as expandable scratchpad RAM accessible by both CPU and I/O coprocessor. Use Value: Delivers 700 mW active power efficiency and TTL compatibility for retrofit into legacy 5 V PLC backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355KV18-200BZI | 18-bit bus width, 200 MHz QDR interface, 1.8 V core, 3.3 V I/O - not pin-compatible | Targets high-bandwidth networking ASICs; lacks TTL compatibility and 5 V operation | Select when migrating to modern low-voltage, high-speed parallel interfaces with FPGA-based controllers. |
| AS7C34098B-20JCIN | 4K × 8, 20 ns, 5 V, 48-pin DIP - identical speed/package but single-port architecture | Requires external arbitration logic for dual-CPU use; no native simultaneous access capability | Choose only if system design permits software-managed memory contention and lower cost outweighs dual-port functionality. |
Compared with CY7C1355KV18-200BZI and AS7C34098B-20JCIN, the IDT7134SA20J uniquely delivers native dual-port concurrency at 5 V with 20 ns timing in a legacy-compatible DIP package - essential for maintaining real-time determinism in retrofitted or MIL-spec embedded systems.
Availability
IDT7134SA20J is available at Aetrix Electronics and suitable for real-time inter-processor communication, video frame buffering, and avionics data acquisition requiring stable component supply across extended product lifecycles.
Supply support for IDT7134SA20J 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 IDT7134SA20J belongs to Renesas' legacy dual-port SRAM product line, engineered for deterministic, arbitration-free memory sharing in safety-critical and real-time embedded systems.
FAQ
What is the maximum operating frequency supported by the IDT7134SA20J?
The IDT7134SA20J does not operate on a clock signal; it is an asynchronous SRAM. Its 20 ns read cycle time (tRC) implies a maximum effective throughput of 50 million operations per second when continuously accessing sequential addresses. Actual system bandwidth depends on address transition timing, CE/OE assertion, and bus loading - all specified in the AC Electrical Characteristics table of the Renesas datasheet for IDT7134SA20J.
Does the IDT7134SA20J support battery backup for data retention?
No, the IDT7134SA20J does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., IDT7134LA20J). The "SA" suffix denotes Standard Power version, which specifies 700 mW active power and 5 mW standby power but lacks the 2 V data retention capability documented for LA parts. Always verify the full part number suffix before assuming retention functionality.
Can the IDT7134SA20J be used in industrial temperature applications?
The IDT7134SA20J is rated for commercial temperature range (0°C to +70°C) only. Industrial-grade operation (–40°C to +85°C) is available in other variants such as IDT7134SA25JGI (25 ns, PLCC) or IDT7134LA25PDGI (25 ns, PDIP), but not for the 20 ns speed grade in commercial packaging. Using IDT7134SA20J outside its specified temperature range may result in timing violations or data corruption.
What package type is used for the IDT7134SA20J?
The IDT7134SA20J uses a 48-pin plastic dual in-line package (PDG48), as confirmed by Renesas ordering information and pin configuration diagrams. This through-hole package has 0.600-inch body width, standard DIP footprint, and is RoHS-compliant. It is distinct from LCC, PLCC, and Flatpack variants used for other speed/temperature combinations in the IDT7134SA/LA family.
How does port arbitration work on the IDT7134SA20J?
The IDT7134SA20J provides no on-chip arbitration logic. It relies on external hardware or software to manage simultaneous access to the same memory location from left and right ports. When contention occurs, data integrity is not guaranteed - users must implement external semaphores, priority encoders, or synchronized access protocols. The device's truth table and timing waveforms assume properly managed non-contention operation for reliable IDT7134SA20J deployment.
7134SA20J 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:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA20J FAQ
1.How can I place an order for 7134SA20J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA20J 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 7134SA20J reliable?
The price and inventory of 7134SA20J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA20J is usually 5 days.
3.What payment methods are accepted for 7134SA20J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA20J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA20J?
7134SA20J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA20J 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 7134SA20J?
For technical support, including 7134SA20J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA20J requirements.
6.How does Aetrix verify that 7134SA20J is sourced from the original manufacturer or authorized distributors?
All 7134SA20J 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 7134SA20J meets industry standards.
7.What is the process for return or replacement of 7134SA20J?
All 7134SA20J units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA20J, 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 7134SA20J part is unused and in its original packaging.
Return procedure for 7134SA20J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA20J Tags
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