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Renesas 7134SA20J8
- Part No.:
- 7134SA20J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA20J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,541
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Product details
Overview
IDT7134SA20J8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 20 ns read cycle time (max), TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables contention-tolerant memory sharing between two processors or bus masters in real-time control systems.
For engineers reviewing the IDT7134SA20J8 datasheet, IDT7134SA20J8 pinout, IDT7134SA20J8 application, or IDT7134SA20J8 equivalent, key selection criteria include dual-port arbitration-free access, 20 ns speed grade, PLCC-52 package compatibility, and low-power standby current of 40 mA (ISB1) under TTL-level inputs.
Technical Context
The IDT7134SA20J8 implements fully asynchronous dual-port architecture with separate address, data, and control lines per port (A0L–A11L/I/O0L–I/O7L/CEL/OEL/R/WL and A0R–A11R/I/O0R–I/O7R/CER/OER/R/WR), enabling simultaneous read/write operations without on-chip arbitration logic. Each port features independent chip enable (CE) and output enable (OE) controls for granular power management.
It uses CMOS fabrication for 700 mW typical active power consumption and supports battery backup data retention only in LA variants - not applicable to this SA-grade part. The device operates across –40°C to +85°C with 4.5 V to 5.5 V supply, meeting MIL-PRF-38535 QML requirements when ordered in military-grade packages.
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 buses |
| Read Cycle Time (tRC) | 20 ns maximum - defines minimum interval between successive reads on same port |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail compatible with legacy TTL logic families |
| Operating Temperature | –40°C to +85°C - industrial grade, validated for embedded control and instrumentation |
| Standby Current (ISB1) | 40 mA max (TTL-level CE inputs) - determines power budget during idle dual-port mode |
| Input/Output Capacitance | 11 pF max - limits trace length and fanout in high-speed PCB layout |
| Output Drive Strength | 6 mA sink / –4 mA source at VOH/VOL - ensures reliable interfacing with 74LS/TTL loads |
Pinout & Package
Package: 52-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC compliant, body size 19.05 mm × 19.05 mm × 4.32 mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 46–52 | I/O0L–I/O7L / I/O0R–I/O7R | Bi-directional data bus for left/right port; high-impedance when OE inactive or CE deasserted |
| 9–20, 29–32 | A0L–A11L / A0R–A11R | 12-bit address inputs per port; decode 4K locations independently |
| 21, 22, 24, 25, 27, 28 | CEL, OEL, R/WL, CER, OER, R/WR | Port-specific control: chip enable, output enable, read/write direction |
| 23, 33 | VCC, GND | Power and ground pins - all VCC and GND pins must be connected per datasheet note |
| 26, 34 | N/C | No-connect pins - must remain unconnected per design specification |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized access from two bus masters without wait states or arbitration logic |
| 20 ns read cycle time (max) | Supports 50 MHz sustained memory bandwidth per port in timing-critical real-time systems |
| TTL-compatible I/O and control levels | Direct interface with legacy 74LS/ALS logic without level-shifting circuitry |
| Independent port power-down via CE | Reduces system power by disabling unused port circuitry while maintaining data integrity |
| Industrial temperature range (–40°C to +85°C) | Validated for deployment in factory automation, motor drives, and outdoor telecom equipment |
Applications
| Real-Time Motion Control | Digital Signal Processor Interface |
|---|---|
Use Scenario: Coordinating servo axis positions between FPGA-based motion planner and microcontroller-based safety monitor. IC Role / Device Role / Timing Role: Shared memory buffer allowing concurrent write (planner) and read (monitor) without software synchronization overhead. Use Value: Eliminates polling delays and guarantees sub-20 ns memory access latency for closed-loop response within 100 µs cycles. |
Use Scenario: Feeding real-time sensor data from ADC controller to DSP core while DSP writes processed results back. IC Role / Device Role / Timing Role: Dual-port SRAM acting as zero-wait-state FIFO between heterogeneous processing domains. Use Value: Enables continuous streaming at 50 MHz effective throughput per port, avoiding pipeline stalls during burst transfers. |
| Avionics Data Acquisition | Industrial PLC Backplane |
Use Scenario: Capturing flight sensor telemetry in one port while flight computer reads historical buffers in parallel. IC Role / Device Role / Timing Role: High-reliability shared memory with QML-compliant packaging options for critical subsystems. Use Value: Meets DO-254 functional safety requirements via deterministic access timing and radiation-hardened variants. |
Use Scenario: Exchanging I/O status and configuration parameters between main CPU and distributed I/O modules over backplane. IC Role / Device Role / Timing Role: Memory-mapped inter-processor communication node supporting hot-swap and redundancy protocols. Use Value: Provides atomic read-modify-write capability across ports, ensuring consistent state updates during module insertion/removal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1345KV18-20BGXI | 18-bit bus width, 2.5 V core / 3.3 V I/O, 20 ns access, QDR-II+ architecture | Requires voltage translation and wider data path; suited for high-throughput packet buffering | Select when migrating to modern low-voltage designs requiring >32 Kbit density and burst-mode support |
| AS7C34098B-20TIN | Single-port 512K × 8, 20 ns, 3.3 V only, no dual-port arbitration capability | Lacks true concurrent access; requires external semaphore or software coordination | Choose only if cost sensitivity outweighs need for hardware-level port independence |
Compared with IDT7134SA20J8, CY7C1345KV18-20BGXI offers higher bandwidth but demands redesign of data path and power delivery, while AS7C34098B-20TIN eliminates dual-port complexity at the cost of deterministic real-time coherency.
Availability
IDT7134SA20J8 is available at Aetrix Electronics and suitable for real-time motion control, avionics data acquisition, and industrial PLC backplane applications requiring stable component supply, long-lifecycle support, and verified industrial temperature performance.
Supply support for IDT7134SA20J8 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 SoC solutions for automotive, industrial, and infrastructure markets.
IDT7134SA20J8 belongs to Renesas' legacy dual-port SRAM product line, engineered for deterministic, arbitration-free memory sharing in hard real-time embedded systems where latency predictability is critical.
FAQ
What is the operating temperature range for IDT7134SA20J8?
IDT7134SA20J8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all electrical specifications including read cycle time, standby current, and input/output voltage thresholds. The device does not support battery backup data retention, as that feature is exclusive to LA-grade variants like IDT7134LA20J8.
Does IDT7134SA20J8 support true simultaneous read/write between ports?
IDT7134SA20J8 permits independent asynchronous access from both ports, but true simultaneous read/write to the same memory location requires external arbitration to prevent data corruption. The device provides no on-chip collision detection or resolution logic - users must implement external semaphores or timing discipline to ensure data integrity during contention.
What package type is used for IDT7134SA20J8?
IDT7134SA20J8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52 in Renesas documentation. Its dimensions are 19.05 mm × 19.05 mm × 4.32 mm, with standard JEDEC MS-026AC footprint and pin 1 orientation confirmed in the May 2021 datasheet revision.
How does the power consumption of IDT7134SA20J8 compare between active and standby modes?
IDT7134SA20J8 draws up to 240 mA dynamic current (ICC) when both ports are active at maximum frequency, and reduces to 40 mA (ISB1) in TTL-level standby with both CE inputs high. Full CMOS-level standby (ISB3) achieves 4.0 mA, enabled by driving CE inputs above VCC – 0.2 V - a key design consideration for ultra-low-power sleep states.
Is IDT7134SA20J8 pin-compatible with other speed grades in the 7134SA family?
IDT7134SA20J8 shares identical pinout and package (PLG52) with other 7134SA variants such as IDT7134SA55JG and IDT7134SA55JG8, enabling drop-in replacement for timing upgrades or downgrades. All 7134SA PLCC parts maintain identical control signal mapping, address/data bus assignment, and power/ground pin locations per the May 2021 datasheet.
7134SA20J8 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:
- 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)
7134SA20J8 FAQ
1.How can I place an order for 7134SA20J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA20J8 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 7134SA20J8 reliable?
The price and inventory of 7134SA20J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA20J8 is usually 5 days.
3.What payment methods are accepted for 7134SA20J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA20J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA20J8?
7134SA20J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA20J8 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 7134SA20J8?
For technical support, including 7134SA20J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA20J8 requirements.
6.How does Aetrix verify that 7134SA20J8 is sourced from the original manufacturer or authorized distributors?
All 7134SA20J8 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 7134SA20J8 meets industry standards.
7.What is the process for return or replacement of 7134SA20J8?
All 7134SA20J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA20J8, 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 7134SA20J8 part is unused and in its original packaging.
Return procedure for 7134SA20J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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