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Renesas 7130LA100CB
- Part No.:
- 7130LA100CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7130LA100CB.pdf
- Description:
- IC SRAM 8KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:4,924
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Product details
Overview
7130LA100CB 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, 100ns maximum read/write cycle time, 1μA full-standby current at CMOS-level inputs, and battery-backed data retention down to 2V. It enables concurrent asynchronous access from left and right ports in real-time interprocessor communication systems.
For engineers reviewing the 7130LA100CB datasheet, 7130LA100CB pinout, 7130LA100CB application, or 7130LA100CB equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, and low-power retention characteristics essential for deterministic dual-access memory design in industrial control and avionics subsystems.
Technical Context
The 7130LA100CB implements fully asynchronous dual-port architecture with independent address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion when both ports access the same address, with tAPS = 5ns priority setup time ensuring deterministic resolution.
As a MASTER device, it features open-drain BUSYL/BUSYR outputs requiring external pull-ups, INTL/INTR interrupt flags for port-to-port signaling, and R/W-controlled or CE-controlled write cycles-supporting both tWC = 100ns and tWP = 55ns minimum pulse width operation under VCC = 5.0V ±10%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit data bus per port) |
| Access Time | 100ns max (tAA, tACE, tAOE), enabling synchronous interface with 10MHz controllers |
| Standby Current | 1μA typical (ISB3, CMOS-level inputs), critical for battery-backed operation |
| Data Retention | 2.0V minimum VCC, supporting backup from coin-cell or supercapacitor sources |
| Operating Voltage | 4.5V–5.5V (VCC), TTL-compatible input thresholds (VIH = 2.2V min) |
| Temperature Range | –40°C to +85°C (Industrial grade), qualified per MIL-PRF-38535 QML for ruggedized use |
| Package | 48-pin Ceramic Flatpack (FP48), hermetically sealed for high-reliability environments |
Pinout & Package
48-pin Ceramic Flatpack (FP48) package with 0.75″ × 0.75″ body size and side-brazed leads. Pin 1 index corner marked; all VCC pins (pins 14, 27, 48) require local decoupling; all GND pins (pins 1, 26, 31) must be solidly connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (1,26,31) | Ground reference | Three dedicated ground pins minimize ground bounce during simultaneous port switching |
| VCC (14,27,48) | Power supply | Three VCC pins distribute power delivery and reduce IR drop across high-current read/write transitions |
| CEL / CER | Chip enable (left/right) | Independent active-low enables allow selective port power-down without affecting the other port |
| OEL / OER | Output enable (left/right) | Controls I/O bus direction; high-Z state prevents bus contention during multi-port sharing |
| R/WL / R/WR | Read/write control (left/right) | Active-high signals define port operation mode; no internal latching-requires stable timing per AC specs |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Asserted low during address conflict; requires external 4.7kΩ pull-up to VCC for proper logic level |
| INTL / INTR | Interrupt request (push-pull) | Active-low flags indicate inter-port events (e.g., write to 3FFh sets INTR); self-clearing on read |
| A0L–A9L / A0R–A9R | Address inputs (10-bit each) | Two independent 10-bit address buses support full 1K-word addressing per port without multiplexing |
| I/O0L–I/O7L / I/O0R–I/O7R | Bi-directional data (8-bit each) | True dual I/O paths eliminate need for external transceivers in master-slave 16-bit expansion |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access deterministically using tAPS = 5ns setup, eliminating external logic |
| Open-drain BUSY outputs | Enable wired-OR arbitration across multiple MASTER devices in distributed memory systems |
| Port-to-port interrupt signaling | INTL/INTR flags support lock-free synchronization between processors without polling overhead |
| 2V data retention | Enables seamless transition to battery backup during main power loss-no data corruption below 2V |
| Full CMOS standby modes | ISB3 = 1μA (both ports disabled, CMOS inputs) extends battery life in always-on monitoring applications |
Applications
| Real-Time Interprocessor Communication | Avionics Data Buffering |
|---|---|
Use Scenario: Two dissimilar flight computers exchange telemetry and command data via shared memory without software coordination. IC Role / Device Role / Timing Role: MASTER 7130LA100CB provides deterministic arbitration and BUSY-flag handshaking to prevent race conditions during concurrent access. Use Value: Eliminates need for semaphores or polling-reduces latency by >200ns versus software-managed shared memory. | Use Scenario: Sensor fusion unit buffers inertial measurement unit (IMU) and GPS data before transmission to central navigation processor. IC Role / Device Role / Timing Role: Dual-port SRAM acts as non-blocking FIFO with one port writing raw sensor streams and the other reading processed packets. Use Value: Sustains 100ns-cycle throughput across both ports, preventing data loss during burst-mode IMU sampling at 10kHz. |
| Industrial PLC Co-Processor Interface | Military Radios with Secure Bootloader |
Use Scenario: Main PLC CPU offloads motion control calculations to an FPGA co-processor using shared memory for parameter updates and status reporting. IC Role / Device Role / Timing Role: 7130LA100CB serves as MASTER with INTL/INTR enabling event-driven notification of new control parameters or fault codes. Use Value: Reduces inter-processor latency to <120ns (tINS = 45ns max), enabling sub-millisecond control loop updates. | Use Scenario: Secure bootloader verifies firmware signature before loading into application memory; retained SRAM stores cryptographic keys during power interruption. IC Role / Device Role / Timing Role: Battery-backed 7130LA100CB maintains key integrity at 2V VCC during brownout, with tCDR = 0ns chip deselect-to-retention delay. Use Value: Guarantees zero data loss during 100ms power dropout-meets MIL-STD-704F transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25 | 512 × 18 organization, 25ns access, 3.3V core, LVCMOS I/O | Wider data bus but half the depth; incompatible voltage and timing-requires level-shifting and redesign | Select only if 18-bit datapath and 3.3V system integration outweigh migration effort |
| AS7C31026B | 1M × 16 sync burst SRAM, 100MHz clocked interface, no arbitration logic | No native dual-port or BUSY arbitration-requires external sequencer for inter-processor coordination | Choose for high-throughput streaming where deterministic contention resolution is not required |
Compared with CY7C1354V25 and AS7C31026B, the 7130LA100CB uniquely delivers true asynchronous dual-port operation with integrated arbitration and 2V data retention in a 5V TTL-compatible footprint-making it irreplaceable for legacy industrial and military systems requiring zero-software-coordination memory sharing.
Availability
7130LA100CB is available at Aetrix Electronics and suitable for real-time interprocessor communication, avionics buffering, industrial PLC co-processor interfaces, and military secure bootloader applications requiring stable component supply across extended product lifecycles.
Supply support for 7130LA100CB 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, now part of Renesas Electronics since 2019.
The IDT7130/7140 family was designed specifically for deterministic, low-latency interprocessor communication in mission-critical systems-emphasizing hardware arbitration, battery backup, and military-grade reliability over density or speed scaling.
FAQ
What is the guaranteed data retention voltage for the 7130LA100CB?
The 7130LA100CB guarantees data retention down to 2.0V (VDR = 2.0V min) when VCC is reduced and CE is held high, enabling reliable operation from backup batteries or supercapacitors during main power failure. This specification applies only to LA versions and is validated per MIL-PRF-38535 QML testing protocols.
Does the 7130LA100CB support true pin-compatible replacement with the 7130SA100CB?
No-the 7130LA100CB and 7130SA100CB share identical pinout and timing but differ in standby current and retention capability: LA draws 1μA in full standby (ISB3) and retains data at 2V, while SA draws 15μA and lacks retention. Swapping requires validation of power budget and backup scheme.
How does BUSY arbitration work when both ports access the same address simultaneously on the 7130LA100CB?
When address match occurs, the 7130LA100CB asserts BUSYL or BUSYR low within tBAA ≤ 50ns (100ns version) after the later address stabilizes, provided tAPS ≥ 5ns priority setup is met. The unasserted port continues operation; the asserted port blocks writes until BUSY deasserts, ensuring atomic access without external logic.
Can the 7130LA100CB operate with mixed voltage interfaces (e.g., 3.3V controller driving 5V SRAM)?
Yes-the 7130LA100CB accepts VIH = 2.2V min and VIL = 0.8V max, making it compatible with 3.3V LVTTL outputs without level shifters. However, its I/Os drive 5V levels, so external voltage translation is required if interfacing with 3.3V-only receivers.
What is the minimum write pulse width required for reliable operation of the 7130LA100CB?
The 7130LA100CB requires tWP ≥ 55ns (max) for R/W-controlled writes and tEW ≥ 90ns (max) for CE-controlled writes at 100ns speed grade. Pulse widths below these values risk incomplete write cycles and data corruption-verified across –40°C to +85°C and 4.5V–5.5V VCC range.
7130LA100CB 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:
- 100ns
- Access Time:
- 100 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
7130LA100CB FAQ
1.How can I place an order for 7130LA100CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA100CB 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 7130LA100CB reliable?
The price and inventory of 7130LA100CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA100CB is usually 5 days.
3.What payment methods are accepted for 7130LA100CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA100CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA100CB?
7130LA100CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA100CB 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 7130LA100CB?
For technical support, including 7130LA100CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA100CB requirements.
6.How does Aetrix verify that 7130LA100CB is sourced from the original manufacturer or authorized distributors?
All 7130LA100CB 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 7130LA100CB meets industry standards.
7.What is the process for return or replacement of 7130LA100CB?
All 7130LA100CB units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA100CB, 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 7130LA100CB part is unused and in its original packaging.
Return procedure for 7130LA100CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA100CB Tags
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AT24C02C-XHM-T
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