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Renesas 7130LA100J
- Part No.:
- 7130LA100J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA100J.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
7130LA100J 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, 2V data retention capability, 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.
For engineers reviewing the 7130LA100J datasheet, 7130LA100J pinout, 7130LA100J application, or 7130LA100J equivalent, key selection considerations include its open-drain BUSY output requiring external pull-up, battery-backed data retention at 2V, TTL-compatible 5V ±10% supply, and port-to-port interrupt signaling via INTL/INTR pins.
Technical Context
The 7130LA100J implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention by asserting BUSYL/BUSYR outputs when address matches occur, enforcing priority based on timing alignment per tAPS (5ns minimum setup).
It supports R/W-controlled and CE-controlled write cycles with defined tWP (55ns), tWC (100ns), and tBDD (65ns) timing. The LA variant delivers 1µA full-standby current (ISB3) and retains data at VCC = 2.0V, distinguishing it from SA versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact buffer or register-file implementations |
| Access Time | 100ns max read cycle time (tRC), supporting synchronous interface to legacy microcontrollers with ≤10MHz bus clocks |
| Data Retention | 2.0V minimum VCC for data retention (VDR), allowing backup from coin-cell batteries without regulator |
| Standby Current | 1µA typical ISB3 (both ports in CMOS-level standby), critical for low-power embedded monitoring nodes |
| Operating Temp | –40°C to +85°C industrial grade, qualified for factory automation and motor control environments |
| Supply Voltage | 4.5V–5.5V (5V ±10%), compatible with standard TTL logic families without level-shifting |
| Arbitration Logic | On-chip port arbitration with tAPS = 5ns setup, eliminating need for external glue logic in dual-CPU systems |
Pinout & Package
7130LA100J is available in 48-pin ceramic flatpack (FP48) and 48-pin plastic DIP (PDG48/SB48) packages. Pin functions are identical across these variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side access; A0L–A9L map directly to 1K memory locations |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; high-impedance when OEL = VIH or CEL = VIH |
| CEL, OEL, R/WL | Left port controls | Chip Enable, Output Enable, Read/Write select - fully asynchronous operation |
| BUSYL, INTL | Left port open-drain flags | BUSYL signals arbitration conflict; INTL sets interrupt flag on right port (A9L–A0L = 3FFh) |
| A0R–A9R | Right port address inputs | Independent 10-bit address space mirroring left port; enables true concurrent access |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left I/O; no bus contention between ports |
| CER, OER, R/WR | Right port controls | Functionally identical to left controls but with separate timing domains |
| BUSYR, INTR | Right port open-drain flags | BUSYR blocks writes during contention; INTR signals interrupt to left port (A9R–A0R = 3FFh) |
| VCC, GND | Power supply | All VCC pins must be decoupled locally; all GND pins tied to common ground plane |
Key Features
| Feature | Design Value |
|---|---|
| MASTER arbitration logic | Enables seamless 16-bit+ memory expansion with IDT7140 SLAVE without external priority encoders |
| 2V data retention | Preserves memory contents during main power loss using simple 2V battery backup, no charge pump required |
| Open-drain BUSY outputs | Allows wired-OR connection of BUSYL/BUSYR for system-level conflict detection across multiple dual-port devices |
| Port-to-port interrupts | INTL/INTR flags enable inter-processor communication without polling or shared registers |
| TTL-compatible I/O | Direct interface to 5V microcontrollers, FPGAs, and ASICs without level translators or bus buffers |
Applications
| Real-Time Motion Control | Dual-Processor Communication |
|---|---|
Use Scenario: Coordinating servo drive commands and feedback in CNC machines where left port serves motion controller and right port serves safety monitor. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as shared register file with deterministic 100ns access, enabling sub-millisecond loop synchronization. Use Value: Eliminates software handshake overhead; BUSY arbitration ensures atomic updates to position setpoints and status flags. | Use Scenario: Inter-processor messaging between ARM host and DSP co-processor in radar signal processing units. IC Role / Device Role / Timing Role: Shared memory buffer with INTL/INTR flags providing hardware-triggered event notification between heterogeneous processors. Use Value: Reduces inter-processor latency to <60ns interrupt set/reset time, avoiding polling-induced CPU load. |
| Industrial PLC I/O Buffer | Battery-Backed Data Logger |
Use Scenario: Storing sensor input snapshots and actuator command history in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Dual-port RAM provides non-blocking read (HMI access) and write (scan-cycle update) paths with guaranteed atomicity. Use Value: Prevents data corruption during simultaneous HMI refresh and scan-cycle execution; 1µA ISB3 extends battery life in maintenance-free deployments. | Use Scenario: Long-term environmental monitoring node logging temperature/humidity every 10 seconds with main power cycling. IC Role / Device Role / Timing Role: Data retention memory holding last 512 samples during AC power loss, restored on reboot. Use Value: 2V VDR allows direct CR2032 coin-cell backup (3V nominal) without voltage regulation, reducing BOM cost and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-100AXC | 1K × 16 organization, 100ns access, no built-in arbitration logic, requires external priority encoder | Suitable for wider data paths but increases layout complexity and component count for contention management | Select when 16-bit native word width is required and external arbitration logic is acceptable |
| AS7C31025B-10JCIN | Single-port 32K × 8 SRAM, 10ns access, no dual-port or arbitration features | Cannot support concurrent read/write; requires software-managed buffering or external FIFOs for multi-master use | Select only for cost-sensitive, single-processor systems where dual-port functionality is unnecessary |
Compared with CY7C136-100AXC and AS7C31025B-10JCIN, the 7130LA100J uniquely integrates arbitration and interrupt signaling in a 1K × 8 footprint, delivering deterministic contention resolution and inter-processor communication without added components-critical for real-time industrial control.
Availability
7130LA100J is available at Aetrix Electronics and suitable for real-time motion control, dual-processor communication, industrial PLC I/O buffering, and battery-backed data logging requiring stable component supply across extended product lifecycles.
Supply support for 7130LA100J 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, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic, low-latency shared memory in dual-CPU, motion control, and telecommunications infrastructure applications where hardware arbitration eliminates software overhead.
FAQ
What is the data retention voltage specification for the 7130LA100J?
The 7130LA100J guarantees data retention at VCC = 2.0V minimum (VDR), validated under TA = +25°C. This enables direct backup from standard 2V–3.6V coin cells without regulation. The LA suffix explicitly denotes this low-voltage retention capability-SA variants do not support it. Operation below 2.0V risks data loss, and retention current (ICCDR) remains ≤4000µA at 2.0V for military-grade units.
How does the 7130LA100J handle memory contention between ports?
The 7130LA100J uses on-chip arbitration logic that asserts BUSYL or BUSYR when both ports access the same address. The port meeting tAPS (5ns arbitration priority setup) first wins; the losing port's write is inhibited. BUSY outputs are open-drain and require external pull-up resistors. This hardware resolution avoids software locks and guarantees atomic updates-critical for real-time control loops where deterministic timing is mandatory.
Can the 7130LA100J operate with mixed voltage interfaces?
No-the 7130LA100J is strictly TTL-compatible with a 4.5V–5.5V VCC supply and VIH = 2.2V minimum. It does not support 3.3V or mixed-voltage I/O. Inputs exceeding VCC + 10% (5.5V) risk permanent damage. For 3.3V systems, level translators are required on all address, control, and data lines. The device's 5V tolerance makes it ideal for legacy industrial controllers but incompatible with modern low-voltage FPGAs without translation.
What package options are available for the 7130LA100J?
The 7130LA100J is offered in 48-pin ceramic flatpack (FP48) and 48-pin plastic DIP (PDG48/SB48). FP48 measures ≈0.75″ × 0.75″ × 0.11″ and suits high-reliability mil-aero applications. PDG48 (≈0.55″ × 0.61″ × 0.19″) and SB48 (≈0.62″ × 2.43″ × 0.15″) target industrial PCBs. All share identical pinout and electrical specs-only mechanical form factor differs.
Does the 7130LA100J support battery backup without external circuitry?
Yes-the 7130LA100J's LA variant includes integrated data retention logic that maintains memory contents at VCC = 2.0V, allowing direct connection to a 2V–3V coin cell (e.g., CR2032) via a series diode for reverse-polarity protection. No external regulators, supervisors, or capacitors are needed. This simplifies design versus SA variants or single-port SRAMs requiring complex backup switching circuits.
7130LA100J 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:
- 100ns
- Access Time:
- 100 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)
7130LA100J FAQ
1.How can I place an order for 7130LA100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA100J 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 7130LA100J reliable?
The price and inventory of 7130LA100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA100J is usually 5 days.
3.What payment methods are accepted for 7130LA100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA100J?
7130LA100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA100J 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 7130LA100J?
For technical support, including 7130LA100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA100J requirements.
6.How does Aetrix verify that 7130LA100J is sourced from the original manufacturer or authorized distributors?
All 7130LA100J 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 7130LA100J meets industry standards.
7.What is the process for return or replacement of 7130LA100J?
All 7130LA100J units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA100J, 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 7130LA100J part is unused and in its original packaging.
Return procedure for 7130LA100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA100J Tags
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