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Renesas 7130SA55CB
- Part No.:
- 7130SA55CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7130SA55CB.pdf
- Description:
- IC SRAM 8KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:1,602
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Product details
Overview
7130SA55CB 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, 55 ns maximum read/write cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables concurrent asynchronous access from left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130SA55CB datasheet, 7130SA55CB pinout, 7130SA55CB application, or 7130SA55CB equivalent, key selection criteria include BUSY flag timing (tBDD ≤ 55 ns), port-to-port arbitration priority setup (tAPS = 5 ns), dual-port standby current (ISB1 = 20 mA typ.), and compatibility with IDT7140SLAVE expansion in 16-bit memory systems.
Technical Context
The 7130SA55CB implements fully asynchronous dual-port operation with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY output assertion when address matches occur between ports, with tAPS = 5 ns minimum priority setup time ensuring deterministic port win resolution.
It supports R/W-controlled and CE-controlled write cycles, features open-drain BUSY outputs requiring external pull-up resistors, and provides INT/INTR flags for inter-port interrupt signaling. The device operates exclusively in MASTER mode and does not accept BUSY inputs - unlike SLAVE IDT7140 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit data width per port) |
| Access Time | 55 ns max - defines minimum read cycle time (tRC) for timing-critical real-time systems |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL logic rails without level-shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments |
| Standby Current | 20 mA typ. (ISB1) - enables low-power idle states in battery-backed or energy-sensitive designs |
| Dynamic Current | 110 mA typ. (ICC) - determines power delivery and thermal design for active dual-port operation |
| Arbitration Setup | tAPS = 5 ns - minimum time required before address match to guarantee BUSY assertion order |
Pinout & Package
7130SA55CB is supplied in a 48-pin ceramic flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin functions are electrically identical across FP48, LC48, and PDG48 packages per datasheet revision Jul.12.21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four pins must be connected to system ground plane for noise immunity and signal integrity |
| VCC (Pins 23, 26) | Power supply | Both pins require local 0.1 µF decoupling to minimize switching noise on 5V rail |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; deassertion places port in standby (ISB1/ISB2) |
| OEL / OER | Output enable (left/right) | Active-low controls I/O bus direction; high-Z when disabled during writes or idle |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines data flow direction on bidirectional I/O lines |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW when opposite port accesses same address; requires external 4.7 kΩ pull-up |
| INTL / INTR | Interrupt flag (open-drain) | Set/reset by writing specific addresses (3FFH/3FEH); requires pull-up for logic HIGH |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K-word addressing independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel 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 dual-CPU or DSP+FPGA shared-memory architectures |
| Open-drain BUSY outputs | Enables wired-OR connection of multiple 7130 devices for scalable multi-port memory systems |
| Port-to-port interrupt signaling | Hardware-accelerated interprocessor notification via dedicated INTL/INTR flags without polling overhead |
| Asynchronous dual-port operation | Supports independent clock domains - e.g., left port driven by MCU, right port by FPGA logic |
| 55 ns access with industrial temp rating | Meets timing closure requirements in motor control, avionics, and test equipment with extended ambient ranges |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion data and control commands via shared memory without software handshaking. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as timing-deterministic data conduit with hardware arbitration preventing write collisions. Use Value: Eliminates CPU cycles spent on semaphore management; 55 ns tRC enables sub-18 MHz synchronous data transfer rates. | Use Scenario: An FPGA-based FFT engine reads incoming ADC samples while a DSP core writes processed spectral results back to memory. IC Role / Device Role / Timing Role: Provides non-blocking, low-latency buffer with independent read/write ports synchronized to separate clock domains. Use Value: Enables pipelined processing with zero wait states; tAPS = 5 ns ensures deterministic arbitration during simultaneous access. |
| Military Data Acquisition System | Industrial PLC Memory Expansion |
Use Scenario: Ruggedized field recorder captures telemetry from multiple sensors using redundant processors sharing timestamped buffers. IC Role / Device Role / Timing Role: Industrial-grade 7130SA55CB serves as radiation-tolerant, wide-temperature shared memory with BUSY-driven collision avoidance. Use Value: –40°C to +85°C operation and MIL-PRF-38535 QML compliance ensure reliability in harsh deployed environments. | Use Scenario: Programmable logic controller expands I/O mapping table storage by cascading 7130SA55CB with IDT7140SLAVE for 16-bit word width. IC Role / Device Role / Timing Role: MASTER device coordinates expansion via dedicated CE/OE/R/W control lines without additional address decoding logic. Use Value: Full-speed 16-bit operation achieved with no performance penalty - tWC remains 55 ns in MASTER/SLAVE configuration. |
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 lacks on-chip arbitration logic and BUSY/INT flags | Requires external logic for port contention resolution; unsuitable for MASTER-only arbitration use cases | Select only if arbitration handled in FPGA or MCU firmware |
| IDT7140SA55CB | Same speed grade and pinout, but SLAVE-only: BUSY pins are inputs, no arbitration logic | Cannot operate standalone; must pair with 7130SA55CB for 16-bit expansion | Use only as companion SLAVE in MASTER/SLAVE configurations |
Compared with CY7C131-55JC and IDT7140SA55CB, the 7130SA55CB uniquely integrates hardware arbitration and interrupt signaling - enabling simpler, lower-latency interprocessor communication without external logic or software overhead.
Availability
7130SA55CB is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffers, military data acquisition systems, and industrial PLC memory expansion requiring stable component supply across extended temperature ranges.
Supply support for 7130SA55CB 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 memory, timing, interface, and RF solutions for communications, computing, and industrial markets.
The IDT7130/7140 family was designed specifically for deterministic, low-latency shared-memory architectures in dual-processor systems - emphasizing hardware arbitration, port independence, and industrial/military reliability.
FAQ
What is the function of BUSYL and BUSYR on the 7130SA55CB?
BUSYL and BUSYR are open-drain arbitration status outputs on the 7130SA55CB. When asserted LOW, they indicate that the opposite port is accessing the same memory address - blocking writes on the affected port. Each requires an external pull-up resistor (typically 4.7 kΩ) to VCC to generate a valid HIGH level. These signals are outputs only; the 7130SA55CB does not accept BUSY inputs.
Can the 7130SA55CB operate as a SLAVE device in a MASTER/SLAVE configuration?
No, the 7130SA55CB is exclusively a MASTER device. It contains on-chip arbitration logic and drives BUSY outputs, but cannot accept BUSY inputs. Only IDT7140-series parts (e.g., IDT7140SA55CB) function as SLAVE devices with BUSY inputs and no arbitration logic. The 7130SA55CB must be paired with a SLAVE for 16-bit expansion.
What is the minimum setup time required for arbitration priority on the 7130SA55CB?
The 7130SA55CB requires a minimum arbitration priority setup time (tAPS) of 5 ns. This is the time by which address stability on one port must precede address stability on the opposite port to guarantee deterministic BUSY assertion order during contention. Failure to meet tAPS may result in unpredictable BUSY assertion on either port.
Does the 7130SA55CB support battery backup data retention?
No, the 7130SA55CB does not support battery backup. Data retention capability is exclusive to LA-suffix variants (e.g., 7130LA55CB), which operate down to 2.0 V and specify ICCDR ≤ 4000 µA at VCC = 2.0 V. The SA suffix denotes standard active power consumption (550 mW typ.) without low-voltage retention features.
Which packages are available for the 7130SA55CB?
The 7130SA55CB is available in 48-pin ceramic flatpack (FP48), 48-pin LCC (LC48), and 48-pin plastic DIP (PDG48/SB48) packages. All share identical pinouts and electrical characteristics per datasheet revision Jul.12.21. The FP48 variant is commonly used in high-reliability industrial and military applications due to hermetic sealing and thermal stability.
7130SA55CB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7130SA55CB FAQ
1.How can I place an order for 7130SA55CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130SA55CB 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 7130SA55CB reliable?
The price and inventory of 7130SA55CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130SA55CB is usually 5 days.
3.What payment methods are accepted for 7130SA55CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130SA55CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130SA55CB?
7130SA55CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130SA55CB 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 7130SA55CB?
For technical support, including 7130SA55CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130SA55CB requirements.
6.How does Aetrix verify that 7130SA55CB is sourced from the original manufacturer or authorized distributors?
All 7130SA55CB 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 7130SA55CB meets industry standards.
7.What is the process for return or replacement of 7130SA55CB?
All 7130SA55CB units undergo pre-shipment inspection (PSI). If there is an issue with 7130SA55CB, 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 7130SA55CB part is unused and in its original packaging.
Return procedure for 7130SA55CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130SA55CB Tags
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