My Inquiry
My Account
Renesas 7130LA35JI
- Part No.:
- 7130LA35JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA35JI.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,860
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130LA35JI from IDT is a high-speed 1K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 35 ns maximum read cycle time, 1 mA typical standby current (LA version), and battery backup data retention down to 2 V. It enables error-free 16-bit-or-wider memory expansion when paired with IDT7140 SLAVE devices in real-time industrial control systems.
For engineers reviewing the 7130LA35JI datasheet, 7130LA35JI pinout, 7130LA35JI application, or 7130LA35JI equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, and LA-series low-power retention characteristics essential for deterministic dual-access memory design.
Technical Context
The 7130LA35JI implements fully asynchronous dual-port access with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves contention via BUSY flag assertion-BUSYL and BUSYR are open-drain outputs requiring external pull-ups, and tBDD (BUSY disable to valid data) is 35 ns max at 35 ns speed grade.
It supports port-to-port interrupt signaling (INTL/INTR) and operates with TTL-compatible 5 V ±10% supply across –40°C to +85°C industrial temperature range. The LA variant guarantees 2 V data retention with ICCDR ≤ 4000 µA (military/industrial) and ≤ 1500 µA (commercial).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 (1024 words × 8 bits), dual independent ports |
| Max Read Cycle Time (tRC) | 35 ns - defines minimum interval between successive reads on same port |
| Standby Current (ISB3) | 0.2 mA typ. - full CMOS-level standby power for low-energy sleep modes |
| Data Retention Voltage | 2.0 V min. - retains data during brown-out or battery backup without refresh |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments |
| Supply Voltage | 4.5 V to 5.5 V - single TTL-compatible rail, no auxiliary supplies required |
| BUSY Output Type | Open-drain - requires external pull-up resistor for proper flag assertion |
Pinout & Package
7130LA35JI is packaged in a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height. Pin assignments are symmetric for left/right ports with dedicated control, address, and bidirectional I/O lines per port.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | All four GND pins must be connected to system ground plane for noise immunity and thermal dissipation |
| VCC (Pins 23, 26) | Power supply | Both VCC pins require decoupling (0.1 µF ceramic + 10 µF tantalum) near package body |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls ISB1/ISB2 standby current states |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z when disabled to prevent bus contention |
| R/WL / R/WR | Read/write direction (left/right) | High = read, low = write; determines data flow direction on bidirectional I/O bus |
| BUSYL / BUSYR | Arbitration flag output (left/right) | Open-drain outputs; assert low during port contention to block writes on opposing port |
| INTL / INTR | Interrupt flag (left/right) | Open-drain outputs; signal inter-port events (e.g., write to address 0x3FE sets INTL) |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K addressing per port; no internal multiplexing |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel data paths; high-impedance when OE inactive or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous access without external logic; uses BUSY flags and tAPS (5 ns setup) to guarantee deterministic priority |
| 2 V data retention (LA only) | Enables seamless battery backup during main power loss; validated at TA = +25°C, ICCDR ≤ 4000 µA |
| Master/Slave expandability | 7130LA35JI acts as MASTER; pairs with IDT7140 SLAVE to build 16-bit+ word width systems without glue logic |
| Open-drain BUSY/INT outputs | Support wired-OR interrupt and arbitration busing; require 4.7 kΩ pull-up to VCC for proper logic levels |
| Industrial temperature range | Qualified from –40°C to +85°C; meets extended thermal cycling requirements for factory automation hardware |
Applications
| Real-Time Motion Controller | Dual-Processor Communication Buffer |
|---|---|
Use Scenario: Two independent DSPs share sensor data and motion command queues in CNC machine tool firmware. IC Role / Device Role / Timing Role: 7130LA35JI serves as MASTER dual-port SRAM with BUSY arbitration ensuring atomic read-modify-write cycles during axis synchronization. Use Value: Eliminates software semaphores and reduces inter-processor latency to ≤35 ns, enabling sub-millisecond motion loop updates. |
Use Scenario: ARM host processor and FPGA co-processor exchange configuration packets and status telemetry in industrial gateway. IC Role / Device Role / Timing Role: 7130LA35JI provides non-blocking memory access with INTL/INTR flags signaling packet readiness across clock domains. Use Value: Enables zero-copy data transfer with deterministic 35 ns read access, avoiding DMA overhead and buffer copying delays. |
| Redundant PLC Memory Module | Battery-Backed Data Logger |
Use Scenario: Programmable Logic Controller maintains mirrored program state across primary and hot-spare CPUs. IC Role / Device Role / Timing Role: 7130LA35JI operates as MASTER with tBDD = 35 ns, ensuring consistent state visibility during failover transitions. Use Value: Guarantees atomic write visibility across ports, preventing split-brain conditions during CPU switchover sequences. |
Use Scenario: Remote environmental monitor logs sensor readings during AC power outages using coin-cell backup. IC Role / Device Role / Timing Role: 7130LA35JI retains 1K of timestamped measurements at 2.0 V supply with ≤1500 µA retention current (commercial grade). Use Value: Extends battery life beyond 1 year while preserving critical event history without volatile RAM refresh circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C136-35JC | 35 ns access, 5 V, 48-pin DIP; no built-in arbitration logic; BUSY must be implemented externally | Requires discrete logic for port contention resolution; not drop-in compatible with 7130LA35JI arbitration flow | Select when board layout allows added components and deterministic arbitration is managed in firmware |
| IDT7140LA35JI | Same speed grade and LA retention, but SLAVE-only; lacks on-chip arbitration and BUSY output logic | Must be used paired with 7130LA35JI as MASTER; cannot operate standalone in arbitration-critical roles | Choose only as companion device in 16-bit+ memory expansion, never as direct functional replacement |
Compared with CY7C136-35JC and IDT7140LA35JI, the 7130LA35JI uniquely integrates arbitration logic and open-drain BUSY outputs-enabling single-chip deterministic dual-access without external logic or timing-critical firmware coordination.
Availability
7130LA35JI is available at Aetrix Electronics and suitable for industrial automation, motion control, and redundant PLC systems requiring stable component supply, long-term lifecycle support, and guaranteed military/industrial temperature performance.
Supply support for 7130LA35JI 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, and RF solutions, now part of Renesas Electronics.
The IDT7130/7140 family was designed specifically for deterministic dual-processor communication and real-time control applications where concurrent memory access and hardware-enforced arbitration are mandatory.
FAQ
What is the function of BUSYL and BUSYR on the 7130LA35JI?
BUSYL and BUSYR are open-drain arbitration flag outputs on the 7130LA35JI. When asserted low, they inhibit writes on the opposing port during address contention. Both require external pull-up resistors to VCC. Their timing-tBAA, tBDA, tBAC, tBDC-is specified at 35 ns max for the 7130LA35JI speed grade, ensuring deterministic resolution of simultaneous access.
Does the 7130LA35JI support battery backup operation?
Yes, the 7130LA35JI supports battery backup data retention at 2.0 V minimum supply voltage. In data retention mode, ICCDR is ≤1500 µA (commercial) or ≤4000 µA (military/industrial), enabling multi-year operation on coin-cell batteries. This feature is exclusive to LA variants and not available on SA versions.
How does the 7130LA35JI differ from the IDT7140LA35JI?
The 7130LA35JI is the MASTER dual-port SRAM with integrated arbitration logic and BUSY/INT outputs. The IDT7140LA35JI is the SLAVE device: it accepts BUSY input (not output), lacks arbitration logic, and is intended only for width-expansion pairing. They are not interchangeable-the 7130LA35JI must serve as the arbitration controller in any system.
What package type is used for the 7130LA35JI?
The 7130LA35JI is supplied in a 48-pin ceramic flatpack (FP48) package, measuring approximately 0.75 inch × 0.75 inch × 0.11 inch. This hermetic package provides superior thermal stability and moisture resistance for industrial and military applications, with pins arranged for symmetric left/right port routing.
Can the 7130LA35JI operate across the full industrial temperature range?
Yes, the 7130LA35JI is fully rated for –40°C to +85°C operation. Its DC and AC electrical specifications-including tRC = 35 ns max, ISB3 = 0.2 mA typ., and VDR = 2.0 V-are guaranteed across this range. The FP48 ceramic package further ensures mechanical reliability under thermal cycling stress encountered in factory-floor environments.
7130LA35JI 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA35JI FAQ
1.How can I place an order for 7130LA35JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA35JI 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 7130LA35JI reliable?
The price and inventory of 7130LA35JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA35JI is usually 5 days.
3.What payment methods are accepted for 7130LA35JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA35JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA35JI?
7130LA35JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA35JI 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 7130LA35JI?
For technical support, including 7130LA35JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA35JI requirements.
6.How does Aetrix verify that 7130LA35JI is sourced from the original manufacturer or authorized distributors?
All 7130LA35JI 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 7130LA35JI meets industry standards.
7.What is the process for return or replacement of 7130LA35JI?
All 7130LA35JI units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA35JI, 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 7130LA35JI part is unused and in its original packaging.
Return procedure for 7130LA35JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA35JI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
