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Renesas 7130SA55J8
- Part No.:
- 7130SA55J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130SA55J8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,081
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Product details
Overview
7130SA55J8 from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 55 ns maximum read/write cycle 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 control systems requiring concurrent access.
For engineers reviewing the 7130SA55J8 datasheet, 7130SA55J8 pinout, 7130SA55J8 application, or 7130SA55J8 equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power states, package-specific pin mapping for FP48, and validated alternatives for MASTER-side dual-port SRAM replacement.
Technical Context
The 7130SA55J8 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY flag assertion, with tBDD ≤ 55 ns and tAPS = 5 ns minimum priority setup time.
It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSY outputs requiring external pull-ups, and provides INTL/INTR flags for inter-port communication. The device operates in active, standby (ISB1 = 20 mA typ.), and full-standby (ISB3 = 1.0 µA typ.) modes under TTL-level CE inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8 data lines), dual independent ports |
| Access Time | 55 ns max - guarantees deterministic latency for real-time interrupt servicing |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V TTL logic rails without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control environments |
| Standby Current | 20 mA typ. (ISB1) - enables low-power sleep mode during host processor idle periods |
| BUSY Timing | tBAA ≤ 55 ns - defines worst-case delay from address change to BUSY assertion during contention |
| Arbitration Setup | tAPS = 5 ns min - ensures reliable priority resolution when both ports access same address simultaneously |
Pinout & Package
7130SA55J8 is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75" × 0.75" body size and side-brazed leads. Pin 1 index corner marked per JEDEC MS-026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins reduce ground bounce during simultaneous port switching |
| VCC (Pin 25) | Power supply | Single 5V supply rail powers both ports; all VCC pins must be decoupled locally |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion places port in standby (ISB1/ISB2) |
| OEL / OER | Output enable (left/right) | Controls I/O bus direction; high-Z when disabled to prevent bus contention |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines data flow direction on I/O pins |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW during port contention; require external 4.7kΩ pull-up to VCC |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port events (e.g., flag set/clear); also require pull-up resistors |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K memory space per port independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data paths; high-impedance when OE or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER/SLAVE configurations, reducing BOM count and PCB area |
| Open-drain BUSY/INT outputs | Enables wired-OR connection of multiple dual-port devices for system-level resource arbitration |
| Dual independent standby modes | Supports asymmetric power management: one port active while other enters ISB2 (65 mA typ.) or ISB4 (40 mA typ.) |
| 55 ns guaranteed timing | Meets hard real-time deadlines in motion control and digital signal processing applications |
| TTL-compatible interface | Direct connection to legacy microcontrollers and FPGAs without level translators or bus buffers |
Applications
| Industrial PLC Memory Buffer | Digital Signal Processor Co-Processor Interface |
|---|---|
Use Scenario: Concurrent read/write access between PLC main CPU and I/O scan engine using shared memory. IC Role / Device Role / Timing Role: MASTER dual-port SRAM providing atomic memory updates with BUSY-flagged arbitration. Use Value: Eliminates software locks and polling overhead; guarantees deterministic <55 ns response to I/O state changes. | Use Scenario: Real-time data exchange between DSP core and host ARM processor in audio/video encoding hardware. IC Role / Device Role / Timing Role: High-speed buffer enabling zero-wait-state transfers at 18.2 MHz sustained bandwidth. Use Value: Sustains 8 MB/s throughput across both ports without cycle stealing or DMA stalls. |
| Military Radar Signal Processing | Automotive ADAS Sensor Fusion Hub |
Use Scenario: Time-critical radar pulse storage where transmit and receive processors share raw ADC samples. IC Role / Device Role / Timing Role: Radiation-tolerant MASTER SRAM with MIL-PRF-38535 QML compliance and –55°C to +125°C operation. Use Value: Maintains 55 ns timing integrity under thermal shock and EMI stress in airborne avionics. | Use Scenario: Synchronizing camera, LiDAR, and ultrasonic sensor data streams in autonomous driving ECUs. IC Role / Device Role / Timing Role: Low-latency shared memory node supporting lock-free inter-process communication between sensor drivers. Use Value: Enables sub-millisecond fusion latency with guaranteed tBDD ≤ 55 ns arbitration resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-55JC | 55 ns access, 1K × 8, but no on-chip arbitration logic; requires external BUSY logic | Lacks integrated MASTER arbitration; suitable only in single-master systems or with discrete priority encoders | Select when cost sensitivity outweighs design simplicity and board space constraints |
| IDT7142S55J | Same 55 ns speed and FP48 package, but SLAVE-only configuration (no BUSY output, no arbitration logic) | Cannot replace 7130SA55J8 in MASTER role; usable only as companion SLAVE in 16-bit expansion | Choose only for SLAVE-side memory expansion where 7130SA55J8 serves as MASTER |
Compared with CY7C131-55JC and IDT7142S55J, the 7130SA55J8 uniquely integrates arbitration logic and BUSY flag generation-enabling true plug-and-play MASTER functionality without external components, whereas alternatives require added logic or are functionally incomplete for standalone MASTER use.
Availability
7130SA55J8 is available at Aetrix Electronics and suitable for industrial PLCs, military radar subsystems, automotive ADAS hubs, and digital signal processing platforms requiring stable component supply across extended product lifecycles.
Supply support for 7130SA55J8 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 high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
The IDT7130 family was designed specifically for deterministic, contention-free dual-processor memory sharing in real-time embedded systems-emphasizing low-latency arbitration, industrial reliability, and seamless MASTER/SLAVE scalability.
FAQ
What is the maximum operating temperature range for the 7130SA55J8?
The 7130SA55J8 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), where the "Industrial" grade explicitly lists this range. It is not qualified for commercial (0°C to +70°C) or military (–55°C to +125°C) grades unless designated with different suffixes.
Does the 7130SA55J8 include on-chip arbitration logic?
Yes, the 7130SA55J8 includes on-chip arbitration logic, as stated in the Features section: "On-chip port arbitration logic (IDT7130 Only)". This logic generates BUSY signals to manage contention when both ports access the same memory location, distinguishing it from SLAVE devices like IDT7140 which lack this capability.
What package type is used for the 7130SA55J8?
The 7130SA55J8 uses a 48-pin ceramic flatpack (FP48) package. This is confirmed in the "Pin Configurations" section (page 3), where the FP48 diagram is labeled "48-Pin Flatpack", and the note specifies "FP48 package body is approximately .75 in x .75 in x .11 in." The 'J' in the part number denotes the ceramic flatpack variant.
Is the 7130SA55J8 compatible with 3.3V logic interfaces?
No, the 7130SA55J8 is not compatible with 3.3V logic. It requires a TTL-compatible 5V ±10% supply (4.5 V to 5.5 V) and specifies VIH = 2.2 V min and VIL = 0.8 V max. Driving its inputs with 3.3V logic may violate VIH margin under worst-case conditions and is not supported per the "Recommended DC Operating Conditions" (2689 tbl 02).
How does the BUSY signal function on the 7130SA55J8?
The BUSY signal on the 7130SA55J8 is an open-drain output (BUSYL and BUSYR) that goes LOW when port contention occurs. As noted in the Functional Block Diagram notes: "IDT7130 (MASTER): BUSY is open drain output and requires pullup resistor." It asserts within tBAA ≤ 55 ns of address match and holds until contention resolves, blocking writes on the affected port.
7130SA55J8 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:
- 55ns
- Access Time:
- 55 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)
7130SA55J8 FAQ
1.How can I place an order for 7130SA55J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55J8 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 7130SA55J8 reliable?
The price and inventory of 7130SA55J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55J8 is usually 5 days.
3.What payment methods are accepted for 7130SA55J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55J8?
7130SA55J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55J8 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 7130SA55J8?
For technical support, including 7130SA55J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55J8 requirements.
6.How does Aetrix verify that 7130SA55J8 is sourced from the original manufacturer or authorized distributors?
All 7130SA55J8 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 7130SA55J8 meets industry standards.
7.What is the process for return or replacement of 7130SA55J8?
All 7130SA55J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55J8, 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 7130SA55J8 part is unused and in its original packaging.
Return procedure for 7130SA55J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55J8 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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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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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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