My Inquiry
My Account
Renesas 7130LA55JI8
- Part No.:
- 7130LA55JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA55JI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,257
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130LA55JI8 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, 1 mA typical standby current, and battery backup data retention down to 2 V. It enables simultaneous independent access from left and right ports in real-time embedded systems requiring deterministic memory contention resolution.
For engineers reviewing the 7130LA55JI8 datasheet, 7130LA55JI8 pinout, 7130LA55JI8 application, or 7130LA55JI8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, dual-supply retention capability, and industrial-temperature packaging details essential for military-grade avionics, radar signal buffering, and redundant control subsystems.
Technical Context
The 7130LA55JI8 implements fully asynchronous dual-port architecture with separate address, data, and control lines per port (left/right), enabling concurrent read/write operations without external logic. Its on-chip arbitration logic resolves port conflicts via BUSY output assertion and supports INT flag generation for inter-port communication.
As a MASTER device, it features open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, while its LA variant guarantees 2 V data retention during power loss. The device operates at 5.0 V ±10% with TTL-compatible I/O and complies with MIL-PRF-38535 QML for military applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit wide), dual-access memory array |
| Access Time (max) | 55 ns - defines worst-case latency for read/write completion under industrial temperature range |
| Standby Current (typ) | 1 mA - enables ultra-low-power hold mode during system sleep or brownout | Data Retention Voltage | 2.0 V - maintains stored data during main supply interruption using backup battery |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and base stations |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL logic rails and legacy power domains |
| Package Type | 48-pin ceramic flatpack (FP48) - hermetic sealing for high-reliability aerospace deployment |
Pinout & Package
48-pin ceramic flatpack (FP48) package with 0.75 in × 0.75 in footprint and 0.11 in height; pins arranged in dual in-line configuration with index corner marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24, 25, 48) | Ground reference | Four dedicated ground connections minimize ground bounce across high-speed dual-port operation |
| VCC (Pins 23, 26) | Power supply | Dual VCC pins ensure stable 5 V distribution to internal logic and I/O drivers |
| CEL / CER | Chip enable (left/right) | Independent chip select per port enables selective port activation and power gating |
| OEL / OER | Output enable (left/right) | Controls tri-state of I/O bus per port; high-Z when deasserted |
| R/WL / R/WR | Read/write direction (left/right) | Active-high for write, active-low for read - determines data flow direction per port |
| BUSYL / BUSYR | Arbitration status (open-drain) | Asserted low during port conflict; requires external pull-up for proper logic level restoration |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port event (e.g., flag set/reset); also requires pull-up resistor |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses support full 1K memory addressing independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional) | 8-bit parallel data path per port; driven only when CE and OE are active |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same memory location without external logic or software intervention |
| Open-drain BUSY/INT outputs | Enables wired-OR interrupt and arbitration signaling across multiple dual-port devices on shared bus |
| 2 V data retention | Maintains memory contents during main supply failure, supporting graceful shutdown and state recovery |
| Master/slave expandability | Allows stacking with IDT7140 SLAVE to build 16-bit+ word width systems without speed penalty |
| MIL-PRF-38535 QML compliance | Qualified for flight-critical and defense electronics with full traceability and screening |
Applications
| Radar Signal Processing Buffer | Redundant Flight Control Memory |
|---|---|
Use Scenario: Real-time capture and processing of pulse-Doppler radar returns with simultaneous acquisition and FFT computation. IC Role / Device Role / Timing Role: MASTER dual-port SRAM buffers ADC samples on one port while feeding DSP engine on the other, with BUSY arbitration preventing corruption during overlapping accesses. Use Value: 55 ns access ensures sub-microsecond latency between sampling and processing stages, critical for target tracking update rates. | Use Scenario: Dual-channel flight computer maintaining synchronized state variables across primary and backup control loops. IC Role / Device Role / Timing Role: Provides coherent shared memory space where both channels read/write telemetry and actuator commands with hardware-enforced consistency. Use Value: On-chip arbitration eliminates race conditions; 2 V retention preserves last-known safe state during transient power loss. |
| Avionics Data Logger | Industrial PLC Dual-CPU Interface |
Use Scenario: Continuous recording of aircraft sensor data (IMU, pressure, temp) with guaranteed non-volatile storage during power cycling. IC Role / Device Role / Timing Role: Acts as high-speed circular buffer between sensor interface ASIC and flash controller, retaining data at 2 V during main supply dropout. Use Value: Eliminates need for external backup capacitors or supercapacitor circuits, reducing BOM count and board area. | Use Scenario: Synchronization point between safety-certified and non-safety CPU cores in modular PLC backplane architecture. IC Role / Device Role / Timing Role: Enables deterministic message passing via INT flag handshake and atomic memory updates using BUSY-controlled write inhibition. Use Value: Meets IEC 61508 SIL-3 requirements for fault-free inter-core communication without software arbitration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7140LA55JI8 | SLAVE-only device; no on-chip arbitration logic; BUSY pins are inputs only | Requires pairing with 7130LA55JI8 as MASTER to form functional dual-port system | Select when expanding 8-bit to 16-bit memory width using MASTER/SLAVE topology |
| CY7C133-55JC | 55 ns access, 1K × 8, but lacks battery backup retention and MIL-spec qualification | Commercial temperature only (0°C to +70°C); not suitable for extended environmental stress | Choose for cost-sensitive industrial designs where 2 V retention and military screening are unnecessary |
Compared with IDT7140LA55JI8 and CY7C133-55JC, the 7130LA55JI8 uniquely combines MASTER arbitration, 2 V data retention, and MIL-PRF-38535 compliance-making it irreplaceable in safety-critical, power-interrupted, or high-reliability deployments where deterministic contention resolution and state preservation are mandatory.
Availability
7130LA55JI8 is available at Aetrix Electronics and suitable for radar signal buffering, avionics data logging, and redundant flight control systems requiring stable component supply across extended product lifecycles and rigorous environmental certification.
Supply support for 7130LA55JI8 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, and interface solutions for communications, computing, and aerospace markets.
The IDT7130 family was designed specifically for deterministic dual-port memory applications in military and industrial systems where simultaneous access, hardware arbitration, and data retention under power loss are mission-critical requirements.
FAQ
What is the maximum operating temperature range for the 7130LA55JI8?
The 7130LA55JI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per manufacturer specifications and supports deployment in harsh environments such as engine-mounted avionics, outdoor base stations, and industrial automation controllers where thermal cycling is severe.
Does the 7130LA55JI8 support true dual-port simultaneous read/write operations?
Yes, the 7130LA55JI8 supports fully asynchronous dual-port operation: the left and right ports can perform independent read or write cycles concurrently. When both ports access the same memory location, on-chip arbitration asserts BUSYL or BUSYR to inhibit the later-arriving write, ensuring data integrity without external logic.
How does the 2 V data retention feature work in the 7130LA55JI8?
The 7130LA55JI8 retains stored data when VCC drops to 2.0 V, drawing ≤4000 µA (military/industrial grade) from a backup source. This is achieved via low-leakage CMOS design and is guaranteed-not just characterized-enabling reliable state preservation during brownout or controlled shutdown sequences.
Is the 7130LA55JI8 pin-compatible with other members of the IDT7130/7140 family?
The 7130LA55JI8 shares identical FP48 pinout with all IDT7130X55JI8 variants (e.g., 7130SA55JI8), but differs electrically from SLAVE devices like IDT7140LA55JI8-whose BUSY pins are inputs, not outputs. Pin compatibility exists within the MASTER 7130 series only; substitution with 7140 requires schematic and firmware changes.
What external components are required for proper operation of the 7130LA55JI8 BUSY and INT pins?
Because BUSYL, BUSYR, INTL, and INTR are open-drain outputs, each requires an external pull-up resistor to VCC. A 4.7 kΩ resistor is recommended per IDT application guidance to ensure valid logic-high levels while limiting current during assertion (≤16 mA sink capability specified).
7130LA55JI8 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA55JI8 FAQ
1.How can I place an order for 7130LA55JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA55JI8 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 7130LA55JI8 reliable?
The price and inventory of 7130LA55JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA55JI8 is usually 5 days.
3.What payment methods are accepted for 7130LA55JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA55JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA55JI8?
7130LA55JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA55JI8 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 7130LA55JI8?
For technical support, including 7130LA55JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA55JI8 requirements.
6.How does Aetrix verify that 7130LA55JI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA55JI8 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 7130LA55JI8 meets industry standards.
7.What is the process for return or replacement of 7130LA55JI8?
All 7130LA55JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA55JI8, 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 7130LA55JI8 part is unused and in its original packaging.
Return procedure for 7130LA55JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA55JI8 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…
