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Renesas 7130SA35J8
- Part No.:
- 7130SA35J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA35J8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,023
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Product details
Overview
7130SA35J8 from IDT (Integrated Device Technology) 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 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7130SA35J8 datasheet, 7130SA35J8 pinout, 7130SA35J8 application, or 7130SA35J8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, dual-port DC/AC electrical specs, and package-specific pin mapping for reliable system integration.
Technical Context
The 7130SA35J8 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY output assertion-open-drain BUSYL/BUSYR require external pull-up resistors-and supports priority-based write inhibition when address matches occur across ports.
It features dedicated INTL/INTR flags for inter-port communication, R/W-controlled or CE-controlled write cycles, and automatic power-down via CE/CER assertion. The device operates in three standby modes (ISB1–ISB4), with full CMOS-level standby current as low as 0.2 mA (typ.) for LA variants-though 7130SA35J8 is SA-grade with 1.0 mA typ. ISB3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8 data lines) - provides compact dual-access buffer for real-time data exchange between two independent bus masters. |
| Access Time | 35 ns (max.) - guarantees deterministic read latency critical for deterministic interrupt response in industrial PLCs and motion controllers. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V TTL logic families without level-shifting circuitry. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including factory automation and motor drive control cabinets. |
| Dynamic Current | 110 mA (typ.) at fMAX - enables thermal budgeting in dense PCB layouts with multiple dual-port SRAMs. |
| Standby Current | 1.0 mA (typ.) ISB3, 25 mA (max.) ISB1 - supports low-power sleep states while retaining full memory content. |
| Bus Interface | Two independent TTL-compatible ports (left/right) - eliminates need for external glue logic in master/slave memory expansion topologies. |
Pinout & Package
7130SA35J8 is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin assignments are identical across FP48, LC48, and PDG48 packages per datasheet revision Jul.12.21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground Reference | Must be connected to system ground plane; dual GND pins reduce ground bounce during simultaneous port switching. |
| VCC (Pin 25) | Power Supply | Single 5V ±10% supply; all VCC pins must be decoupled locally with 0.1 µF ceramic capacitor. |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; assertion disables outputs and enters standby mode (ISB1/ISB2). |
| OEL / OER | Output Enable (Left/Right) | Active-low controls tri-state of I/O pins; used with CE to manage bus sharing without contention. |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, Low = write; determines direction of data flow on associated I/O bus. |
| BUSYL / BUSYR | Arbitration Flag (Open-Drain) | Outputs on 7130SA35J8; require external 4.7 kΩ pull-up to VCC; signal write contention to opposite port. |
| INTL / INTR | Interrupt Flag (Open-Drain) | Outputs indicate inter-port events (e.g., "set right INTR" via A9L–A0L = 3FFh); require pull-up for active-high logic interpretation. |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address buses (0–1023) - support independent addressing per port; no internal address latching. |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data paths; high-impedance when OE/CE inactive; driven by internal drivers during read/write. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same memory location without external logic; uses BUSY outputs to stall contending port writes. |
| Master-only BUSY flag | BUSYL/BUSYR are open-drain outputs on 7130SA35J8 (not inputs), enabling direct connection to SLAVE IDT7140 BUSY inputs in master/slave configurations. |
| Port-to-port interrupt signaling | INTL/INTR flags allow software-triggered cross-port notifications (e.g., data ready, buffer full) using dedicated address-match sequences (3FEh/3FFh). |
| Asynchronous dual-port operation | Each port operates independently-no clock required-enabling seamless integration with microcontrollers, FPGAs, and DSPs running at different speeds. |
| TTL-compatible interface | Direct interfacing with legacy 5V logic families; VIH = 2.2 V min., VIL = 0.8 V max., eliminates level translators in mixed-voltage systems. |
Applications
| Industrial Motion Controller | Real-Time Data Logger |
|---|---|
Use Scenario: Synchronized servo axis control where FPGA handles position loop and MCU manages trajectory planning. IC Role / Device Role / Timing Role: 7130SA35J8 acts as MASTER dual-port RAM buffering setpoint updates (FPGA writes) and status reads (MCU reads) with sub-35 ns latency. Use Value: Eliminates polling delays and race conditions; BUSY arbitration ensures deterministic write completion before status update. | Use Scenario: Battery-backed environmental sensor node recording temperature/humidity at 100 Hz with host PC upload over RS-232. IC Role / Device Role / Timing Role: 7130SA35J8 serves as shared FIFO between sensor acquisition ASIC (writes) and UART controller (reads), decoupling timing domains. Use Value: Prevents data loss during host upload bursts; INTL/INTR flags signal buffer thresholds without CPU overhead. |
| Avionics Display Processor | Digital Signal Analyzer Front-End |
Use Scenario: MIL-STD-1553B bus interface module rendering flight data on cockpit display with deterministic refresh. IC Role / Device Role / Timing Role: 7130SA35J8 functions as MASTER RAM holding frame buffers-one port for graphics processor writes, one for display controller reads. Use Value: Guarantees glitch-free video output; 35 ns access meets 25 MHz pixel clock timing budgets with margin. | Use Scenario: High-speed ADC capture system streaming 12-bit samples to FPGA for FFT processing and to ARM core for metadata tagging. IC Role / Device Role / Timing Role: 7130SA35J8 provides dual-access scratchpad memory for sample buffering and coefficient storage with zero wait states. Use Value: Enables concurrent acquisition and analysis; arbitration logic prevents corruption during overlapping DMA transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-35AXC | 32K × 16 organization, 35 ns access, 3.3V supply only; no built-in arbitration logic-requires external BUSY management. | Suitable for wider data paths but lacks native master/slave expansion capability; not drop-in replaceable due to voltage and pinout mismatch. | Select only if migrating to 3.3V architecture and adding discrete arbitration logic is acceptable. |
| IDT7142SA35JG | Same 1K × 8 size and 35 ns speed, but SLAVE-only device with BUSY inputs (not outputs); requires pairing with 7130-series MASTER. | Cannot operate standalone; designed exclusively as companion to 7130 in 16-bit+ systems-unsuitable as direct replacement for MASTER role. | Use only in master/slave configurations where 7130SA35J8 drives arbitration and 7142SA35JG extends data width. |
Compared with CY7C024AV-35AXC and IDT7142SA35JG, the 7130SA35J8 uniquely integrates on-chip arbitration and MASTER functionality in a 5V, industrial-temp 1K×8 package-making it irreplaceable for legacy 5V systems requiring self-contained dual-port expansion without external logic.
Availability
7130SA35J8 is available at Aetrix Electronics and suitable for industrial motion control, avionics display subsystems, and real-time data logging requiring stable component supply across extended product lifecycles.
Supply support for 7130SA35J8 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 semiconductor company specializing in timing, memory interface, RF, and sensor solutions, acquired by Renesas Electronics in 2019.
The IDT7130/7140 family was engineered for deterministic dual-port memory access in real-time embedded systems-emphasizing arbitration integrity, low-latency timing, and industrial reliability without external support components.
FAQ
What is the maximum operating temperature range for the 7130SA35J8?
The 7130SA35J8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (2689 tbl 03) and applies to all SA-grade variants including 7130SA35J8. It is not rated for military (–55°C to +125°C) or commercial (0°C to +70°C) ranges.
Does the 7130SA35J8 support battery backup data retention?
No, the 7130SA35J8 does not support battery backup data retention. That feature is exclusive to LA-grade variants (e.g., 7130LA35J8), which specify 2.0 V minimum VCC for data retention per Table 07. The SA suffix denotes standard active power profile, with typical standby current of 1.0 mA (ISB3) versus 0.2 µA for LA versions.
How does BUSY arbitration work on the 7130SA35J8?
On the 7130SA35J8, BUSYL and BUSYR are open-drain outputs that assert low when address contention is detected-i.e., when both ports attempt to access the same memory location simultaneously. Per datasheet Note 1, these outputs require external pull-up resistors. A low BUSY signal on one port inhibits writes on the opposing port until the conflict resolves, ensuring data integrity without external logic.
Can the 7130SA35J8 be used as a standalone dual-port RAM without a SLAVE device?
Yes, the 7130SA35J8 functions fully as a standalone 1K × 8 dual-port SRAM. Its on-chip arbitration logic, BUSY outputs, and INT flags operate independently. The SLAVE (IDT7140) is optional and only required when expanding to 16-bit or wider data paths-using the MASTER/SLAVE topology described in the Functional Block Diagram and Features section.
What package type is used for the 7130SA35J8?
The 7130SA35J8 is packaged in a 48-pin ceramic flatpack (FP48), as confirmed by the "Pin Configurations" section (drawing 2689 drw 03F) and ordering information notes. The FP48 body measures approximately 0.75″ × 0.75″ × 0.11″ and uses side-brazed leads for hermetic sealing and thermal stability in industrial environments.
7130SA35J8 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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130SA35J8 FAQ
1.How can I place an order for 7130SA35J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA35J8 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 7130SA35J8 reliable?
The price and inventory of 7130SA35J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA35J8 is usually 5 days.
3.What payment methods are accepted for 7130SA35J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA35J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA35J8?
7130SA35J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA35J8 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 7130SA35J8?
For technical support, including 7130SA35J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA35J8 requirements.
6.How does Aetrix verify that 7130SA35J8 is sourced from the original manufacturer or authorized distributors?
All 7130SA35J8 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 7130SA35J8 meets industry standards.
7.What is the process for return or replacement of 7130SA35J8?
All 7130SA35J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA35J8, 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 7130SA35J8 part is unused and in its original packaging.
Return procedure for 7130SA35J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA35J8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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