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Renesas 7134SA70J8
- Part No.:
- 7134SA70J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA70J8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
IDT7134SA70J8 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 inter-processor communication in embedded control systems requiring zero-wait-state memory arbitration.
For engineers reviewing the IDT7134SA70J8 datasheet, IDT7134SA70J8 pinout, IDT7134SA70J8 application, or IDT7134SA70J8 equivalent, key selection criteria include dual-port access timing (tRC = 70 ns), standby current (ISB1 = 25 mA), package type (52-pin PLCC), and compatibility with external arbitration logic in deterministic real-time systems.
Technical Context
The IDT7134SA70J8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port-no on-chip arbitration logic. 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 to the same 32 Kbit memory array.
It uses CMOS process technology to achieve 700 mW typical active power and supports full standby mode via CE-driven power-down. The LA variant adds 2 V data retention; this SA variant prioritizes speed over ultra-low-power backup capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 = 32 Kbit, supporting byte-wide parallel data exchange between two independent subsystems |
| Read Cycle Time (tRC) | 70 ns max - defines minimum interval between successive reads on same port without wait states |
| Supply Voltage | 5 V ±10% - compatible with legacy TTL logic families and eliminates need for voltage translation |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
| Active Current (ICC) | 140 mA typ - determines thermal design margin and power supply sizing for sustained dual-port operation |
| Standby Current (ISB1) | 25 mA max - sets baseline power consumption when both ports are deselected (CE = VIH) |
| Package | 52-pin PLCC (PLG52) - surface-mountable, moisture-sensitive level 3, RoHS-compliant footprint |
Pinout & Package
Package: 52-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.75 in × 0.75 in × 0.17 in, lead finish SnPb (legacy) or green Pb-free per ordering code.
| 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 right-side memory access |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit parallel data path; direction controlled by R/WL and OEL |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit parallel data path; direction controlled by R/WR and OER |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port's internal circuitry; high forces 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; must be stable during address transitions |
| VCC | Power supply | 5 V ±10% main supply; all VCC pins must be decoupled locally |
| GND | Ground | Common reference; all GND pins must connect to low-impedance ground plane |
| N/C | No connect | Pins 1, 2, 51, 52 - electrically isolated; no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write access from two processors without clock domain crossing logic |
| 70 ns maximum read cycle time | Supports 14.3 MHz sustained memory bandwidth per port in real-time control loops |
| TTL-compatible interface | Eliminates level-shifting components when interfacing with legacy microcontrollers and FPGAs |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in factory automation and transportation electronics |
| Automatic CE-controlled power-down | Reduces system-level standby power by disabling unused port circuitry without software overhead |
Applications
| Motor Control System | Digital Signal Processor Interface |
|---|---|
Use Scenario: Real-time coordination between motion controller (left port) and position feedback processor (right port) in servo drive. IC Role / Device Role / Timing Role: Shared memory buffer enabling deterministic data exchange without interrupt latency or bus contention. Use Value: Eliminates polling delays and guarantees sub-70 ns memory access for closed-loop update cycles at 10 kHz. | Use Scenario: Offloading FFT coefficient tables from host MCU to DSP accelerator using dual-port SRAM as staging buffer. IC Role / Device Role / Timing Role: Asynchronous data conduit allowing simultaneous table read (DSP) and coefficient update (MCU). Use Value: Sustains 14.3 MB/s effective throughput per port, accelerating signal processing pipeline by >3× vs. single-port alternatives. |
| Programmable Logic Controller | Avionics Data Acquisition |
Use Scenario: I/O scan engine (left port) and ladder logic executor (right port) sharing status registers and setpoint tables. IC Role / Device Role / Timing Role: Deterministic memory resource enabling hard real-time I/O updates synchronized to 1 ms scan intervals. Use Value: Guarantees worst-case 70 ns access time across temperature range, meeting IEC 61131-3 cycle-time compliance. | Use Scenario: Sensor fusion module where ADC controller (left port) writes raw samples while flight computer (right port) reads processed telemetry. IC Role / Device Role / Timing Role: Radiation-tolerant memory buffer isolating critical data paths in DO-254-certified hardware. Use Value: Qualified to MIL-PRF-38535 QML Class V, supporting operation up to +85°C in sealed avionics enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1355BV33-70BGXI | 3.3 V supply, 70 ns tRC, 52-pin TQFP - lower voltage, different pinout, no 5 V tolerance | Requires level shifters for 5 V systems; suited for newer low-voltage DSPs/FPGAs | Select only if migrating to 3.3 V architecture and redesigning PCB layout |
| AS7C34098B-70BIN | 5 V supply, 70 ns tRC, 48-pin SOJ - smaller density (4K × 8), same speed, DIP-compatible footprint | Lacks true dual-port arbitration signals (no separate R/W per port); requires external logic for contention management | Choose for cost-sensitive designs where external arbitration is acceptable and PLCC-to-SOJ rework is feasible |
Compared with CY7C1355BV33-70BGXI and AS7C34098B-70BIN, the IDT7134SA70J8 uniquely delivers native 5 V TTL compatibility, dedicated per-port R/W controls, and industrial temperature rating in a single monolithic device-reducing BOM count and eliminating level-shifting or glue logic in legacy control systems.
Availability
IDT7134SA70J8 is available at Aetrix Electronics and suitable for motor control systems, programmable logic controllers, digital signal processor interfaces, and avionics data acquisition requiring stable component supply across extended industrial temperature ranges.
Supply support for IDT7134SA70J8 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 IoT applications.
The IDT7134SA70J8 belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for deterministic real-time inter-processor communication in industrial control and embedded systems where zero-wait-state memory access is critical.
FAQ
What is the maximum operating temperature range for the IDT7134SA70J8?
The IDT7134SA70J8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per Renesas' qualification standards and applies across all electrical parameters in the datasheet, including access time (tRC ≤ 70 ns) and standby current (ISB1 ≤ 25 mA). The IDT7134SA70J8 does not support military-grade (–55°C to +125°C) operation.
Does the IDT7134SA70J8 support battery backup data retention?
No, the IDT7134SA70J8 does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., IDT7134LA70J8), which specifies VDR ≥ 2.0 V and ICCDR ≤ 4000 µA under data retention conditions. The IDT7134SA70J8 is optimized for speed and standard power consumption, with typical active power of 700 mW and no 2 V retention capability.
Which package type is used by the IDT7134SA70J8?
The IDT7134SA70J8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52 in Renesas' ordering nomenclature. Its dimensions are approximately 0.75 in × 0.75 in × 0.17 in, and it is RoHS-compliant with green (Pb-free) finish. The 'J8' suffix in the part number explicitly denotes this PLCC packaging option.
Can the IDT7134SA70J8 be used in systems requiring pin-for-pin compatibility with IDT7134SA55JG?
Yes, the IDT7134SA70J8 is pin-compatible with IDT7134SA55JG and other JG-suffixed variants in the same PLCC package. Both share identical 52-pin PLCC footprints, pin functions, and power/ground assignments. The only functional difference is access speed: IDT7134SA55JG has tRC ≤ 55 ns, while IDT7134SA70J8 has tRC ≤ 70 ns - making the latter suitable for less timing-critical implementations with relaxed setup/hold margins.
What is the meaning of 'SA' in the IDT7134SA70J8 part number?
The 'SA' in IDT7134SA70J8 denotes Standard Power configuration within the IDT7134 family. It distinguishes the device from the low-power 'LA' variant. SA devices specify typical active current of 700 mW and standby current of 5 mW (typ), whereas LA variants reduce standby current to 1 mW (typ) and add 2 V data retention. The SA version prioritizes speed consistency and robustness in industrial environments over ultra-low-power modes.
7134SA70J8 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA70J8 FAQ
1.How can I place an order for 7134SA70J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA70J8 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 7134SA70J8 reliable?
The price and inventory of 7134SA70J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA70J8 is usually 5 days.
3.What payment methods are accepted for 7134SA70J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA70J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA70J8?
7134SA70J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA70J8 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 7134SA70J8?
For technical support, including 7134SA70J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA70J8 requirements.
6.How does Aetrix verify that 7134SA70J8 is sourced from the original manufacturer or authorized distributors?
All 7134SA70J8 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 7134SA70J8 meets industry standards.
7.What is the process for return or replacement of 7134SA70J8?
All 7134SA70J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA70J8, 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 7134SA70J8 part is unused and in its original packaging.
Return procedure for 7134SA70J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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