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Renesas 7130SA35JI
- Part No.:
- 7130SA35JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA35JI.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
7130SA35JI from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 35 ns maximum access time, TTL-compatible 5 V ±10% supply, and industrial temperature range (–40°C to +85°C). It supports fully asynchronous dual-port operation for real-time interprocessor communication in embedded control systems.
For engineers reviewing the 7130SA35JI datasheet, 7130SA35JI pinout, 7130SA35JI application, or 7130SA35JI equivalent, key selection criteria include BUSY flag timing (tBAA ≤ 35 ns), port-to-port arbitration priority setup (tAPS = 5 ns), INT/INTR interrupt signaling, and compatibility with IDT7140 SLAVE devices in 16-bit memory expansion.
Technical Context
The 7130SA35JI implements independent left/right ports with separate address (A0L–A9L, A0R–A9R), data (I/O0L–I/O7L, I/O0R–I/O7R), and control lines (CEL/OEL/R/WL, CER/OER/R/WR). Its on-chip arbitration logic resolves simultaneous access to the same memory location using BUSY output flags and tAPS-based priority resolution.
It features open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, INTL/INTR interrupt generation for port-to-port signaling, and full TTL-level compatibility with active current ≤110 mA and standby current ≤25 mA (ISB1, industrial grade). Battery backup is not supported - only LA variants provide 2 V data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8 bits), enabling compact dual-access buffer or register-file applications |
| Access Time | 35 ns max (industrial grade), guaranteeing deterministic latency for real-time inter-processor handshaking |
| Supply Voltage | 5.0 V ±10%, compatible with legacy 5 V TTL bus systems without level translation |
| Operating Temp | –40°C to +85°C, qualified for industrial control, motor drives, and telecom line cards |
| Arbitration Logic | On-chip port arbitration with tAPS = 5 ns setup, eliminating need for external glue logic in MASTER configuration |
| BUSY Output | Open-drain BUSYL/BUSYR (requires pull-up), asserting low to block writes during contention on respective port |
| Interrupt Support | Dedicated INTL/INTR flags for hardware-triggered cross-port event notification (e.g., data ready, command complete) |
Pinout & Package
7130SA35JI is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin assignments are defined per IDT documentation for FP48 top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable reference for both ports and reduce switching noise coupling |
| VCC (Pin 23) | Power supply | Single 5 V supply powers entire dual-port core; all VCC pins must be decoupled locally |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion places port in low-power standby (ISB1/ISB2) |
| OEL / OER | Output enable (left/right) | Active-low controls I/O drivers; high-impedance state allows bus sharing without contention |
| R/WL / R/WR | Read/write direction (left/right) | TTL-compatible control: HIGH = read, LOW = write; determines data flow direction per port |
| BUSYL / BUSYR | Arbitration status (open-drain) | LOW indicates write contention on that port; requires external 4.7 kΩ pull-up to VCC |
| INTL / INTR | Interrupt request (open-drain) | Asynchronous flag for cross-port signaling; asserted by address-matched write to 3FEh/3FFh |
| A0L–A9L / A0R–A9R | Address inputs (10-bit each) | Independent 10-bit address buses support concurrent access to any location from either port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (8-bit bidirectional) | True bidirectional data paths; direction controlled solely by R/W and OE states per port |
Key Features
| Feature | Design Value |
|---|---|
| MASTER arbitration capability | Enables standalone dual-port use or seamless 16-bit+ expansion with IDT7140 SLAVE without external logic |
| Asynchronous dual-port operation | Eliminates clock domain synchronization overhead; supports independent read/write cycles on each port |
| Open-drain BUSY and INT outputs | Allows wired-OR interrupt aggregation and shared BUSY signaling across multiple dual-port devices |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in factory automation and outdoor equipment |
| TTL-compatible interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory in a motion control system. IC Role / Device Role / Timing Role: 7130SA35JI acts as MASTER dual-port SRAM, providing non-blocking, low-latency memory access with BUSY-driven arbitration. Use Value: 35 ns access time and 5 ns arbitration setup (tAPS) ensure deterministic response under worst-case contention. | Use Scenario: An FPGA-based DSP engine streams audio samples to a fixed-function codec IC using ping-pong buffering. IC Role / Device Role / Timing Role: 7130SA35JI serves as dual-access FIFO buffer, with left port connected to FPGA and right port to codec. Use Value: Fully asynchronous operation eliminates clock-domain crossing logic; INTL/INTR signals synchronize buffer state transitions. |
| Redundant Control System Memory | Legacy Bus Interface Bridge |
Use Scenario: Primary and backup PLC CPUs maintain synchronized state via mirrored memory in safety-critical infrastructure. IC Role / Device Role / Timing Role: 7130SA35JI provides fault-tolerant shared memory with hardware-enforced write collision avoidance. Use Value: On-chip arbitration prevents data corruption during failover; open-drain BUSY outputs integrate into system-level watchdog monitoring. | Use Scenario: A modern ARM processor interfaces with legacy 5 V parallel peripherals (e.g., display controllers, ADCs) via shared memory mapping. IC Role / Device Role / Timing Role: 7130SA35JI bridges voltage and timing domains as a protocol-transparent memory coupler. Use Value: TTL-compatible 5 V I/O and 35 ns access meet timing budgets of ISA-style and Z80-based peripheral buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-35JC | 35 ns access, 5 V, 1K × 8, but no on-chip arbitration logic; BUSY must be implemented externally | Requires discrete logic for port contention management; less suitable for MASTER-only designs | Select when external arbitration control is preferred or when migrating from Cypress footprint |
| IDT7140SA35JI | Same speed and package, but SLAVE-only: BUSY pins are inputs (not outputs); no arbitration logic | Must be paired with 7130SA35JI in MASTER/SLAVE configuration; cannot operate standalone as MASTER | Choose only for 16-bit+ memory expansion where 7130SA35JI handles arbitration and address decoding |
Compared with CY7C131-35JC and IDT7140SA35JI, the 7130SA35JI uniquely integrates arbitration logic and BUSY output capability, reducing BOM count and PCB area in MASTER-centric architectures while maintaining pin-for-pin compatibility within the IDT7130/7140 family.
Availability
7130SA35JI is available at Aetrix Electronics and suitable for industrial control, real-time communications, and embedded signal processing applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for 7130SA35JI 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
IDT (Integrated Device Technology) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions, now part of Renesas Electronics.
The IDT7130 product line delivers high-speed dual-port SRAMs optimized for deterministic interprocessor communication, real-time data exchange, and hardware-accelerated arbitration in industrial and military systems.
FAQ
What is the maximum access time specification for the 7130SA35JI?
The 7130SA35JI has a maximum access time of 35 ns over the full industrial temperature range (–40°C to +85°C), measured as tAA (address access time), tACE (chip enable access time), and tAOE (output enable access time) under specified load conditions.
Does the 7130SA35JI support battery backup operation?
No, the 7130SA35JI does not support battery backup. Only the LA variant (e.g., 7130LA35JI) provides 2 V data retention capability. The 'SA' suffix denotes standard active power consumption without retention mode.
How is port arbitration handled in the 7130SA35JI?
The 7130SA35JI implements on-chip arbitration logic that asserts BUSYL or BUSYR low when contention occurs on the respective port. Priority is determined by tAPS (5 ns setup time), and the earlier-stable port wins - no external logic is required for basic arbitration.
What package type is used for the 7130SA35JI?
7130SA35JI is packaged in a 48-pin ceramic flatpack (FP48) with side-brazed leads, measuring approximately 0.75 inch × 0.75 inch × 0.11 inch, and qualified for industrial temperature operation.
Can the 7130SA35JI be used as a standalone dual-port memory without a SLAVE device?
Yes, the 7130SA35JI functions as a complete standalone dual-port SRAM with integrated arbitration. It does not require an IDT7140 SLAVE device unless expanding to 16-bit or wider data paths - the MASTER capability is self-contained.
7130SA35JI 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:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 35ns
- Access Time:
- 35 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)
7130SA35JI FAQ
1.How can I place an order for 7130SA35JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA35JI 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 7130SA35JI reliable?
The price and inventory of 7130SA35JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA35JI is usually 5 days.
3.What payment methods are accepted for 7130SA35JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA35JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA35JI?
7130SA35JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA35JI 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 7130SA35JI?
For technical support, including 7130SA35JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA35JI requirements.
6.How does Aetrix verify that 7130SA35JI is sourced from the original manufacturer or authorized distributors?
All 7130SA35JI 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 7130SA35JI meets industry standards.
7.What is the process for return or replacement of 7130SA35JI?
All 7130SA35JI units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA35JI, 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 7130SA35JI part is unused and in its original packaging.
Return procedure for 7130SA35JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA35JI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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