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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 7130LA100L48B

Name: 7130LA100L48B
Brand: Renesas
SKU: 7130LA100L48B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7130LA100L48B

Manufacturer:: Renesas

Category:: Memory

Package:: 48-LCC

Datasheet:: 7130LA100L48B.pdf

Description:: IC SRAM 8KBIT PARALLEL 48LCC

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Product details

Overview

7130LA100L48B 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 (CMOS-level CE), and battery-backed data retention at 2V - used in real-time inter-processor communication systems requiring concurrent access without external logic.

For engineers reviewing the 7130LA100L48B datasheet, 7130LA100L48B pinout, 7130LA100L48B application, or 7130LA100L48B equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port power-down modes, and flatpack package layout for deterministic system integration.

Technical Context

The 7130LA100L48B implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via BUSY flag assertion, with tBDD ≤ 65ns (for 100ns version) ensuring valid read data after write-to-read port collision.

It supports R/W-controlled and CE-controlled write cycles, open-drain BUSY outputs requiring external pull-ups, and interrupt generation (INTL/INTR) triggered by address-matched writes to dedicated locations (e.g., A9–A0 = 3FF_H). Battery backup mode operates at V_CC = 2.0V with ICCDR ≤ 4000µA (military grade).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	1K × 8 bits (1024 words × 8-bit wide), dual-access memory array
Max Read Cycle Time (tRC)	100ns - defines minimum interval between successive reads on same port
Full Standby Current (ISB3)	1.0µA typical / 10µA max (CMOS-level CE) - enables ultra-low-power battery-retention mode
Data Retention Voltage	2.0V minimum - guarantees nonvolatile data hold during main supply loss
Operating Supply	5.0V ±10% - single TTL-compatible rail; all VCC pins require decoupling
Temperature Range	–55°C to +125°C (military grade) - qualified per MIL-PRF-38535 QML
Package	48-pin ceramic flatpack (FP48) - hermetic, leaded, 0.75″ × 0.75″ footprint

Pinout & Package

48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ body and side-brazed leads; requires external pull-up resistors on BUSYL, BUSYR, INTL, and INTR due to open-drain output configuration.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pins 1, 24, 25, 48)	Ground reference	Four dedicated ground connections minimize ground bounce across dual ports
VCC (Pins 23, 26)	Power supply	Dual VCC pins enable localized decoupling near left/right I/O banks
CEL / CER	Chip enable (left/right)	Active-low enables port access; controls ISB1/ISB2/ISB3 standby current states
OEL / OER	Output enable (left/right)	Active-low enables I/O drivers; high-Z when disabled (tHZ ≤ 40ns)
R/WL / R/WR	Read/write direction (left/right)	High = read, low = write; determines bus direction and internal latch timing
A0L–A9L / A0R–A9R	Address inputs (left/right)	10-bit address buses support full 1K-word addressing per port
I/O0L–I/O7L / I/O0R–I/O7R	Data I/O (left/right)	Bidirectional 8-bit data paths; high-Z when OE inactive or during write setup
BUSYL / BUSYR	Arbitration flag (open-drain)	Asserted low during port contention; requires external pull-up for proper logic level
INTL / INTR	Interrupt flag (open-drain)	Set/reset by address-matched writes to 3FE_H/3FF_H; requires pull-up

Key Features

Feature	Design Value
On-chip arbitration logic	Eliminates need for external priority encoders or glue logic in multi-processor shared-memory designs
Open-drain BUSY/INT outputs	Enables wired-OR interrupt aggregation and flexible voltage-level interfacing with external controllers
2V data retention	Preserves memory contents during main power failure using backup battery, critical for fault-tolerant systems
Asynchronous dual-port operation	Allows independent, unsynchronized read/write access from two processors without clock domain crossing logic
MIL-PRF-38535 QML compliance	Meets military reliability, screening, and traceability requirements for aerospace and defense deployments

Applications

Real-Time Avionics Data Buffer	Dual-Core Industrial PLC Memory
Use Scenario: Shared memory between flight control processor and sensor acquisition unit in UAV autopilot. IC Role / Device Role / Timing Role: MASTER dual-port SRAM providing atomic read/write access with BUSY-flag arbitration to prevent data corruption during simultaneous access. Use Value: 100ns cycle time ensures sub-10µs inter-processor message latency; 2V retention preserves last-known state during brownout.	Use Scenario: Coordinated motion control between safety-critical and non-safety logic cores in modular PLC chassis. IC Role / Device Role / Timing Role: Memory coherency hub enabling lock-free status exchange via INTL/INTR handshake and address-triggered interrupts. Use Value: Open-drain interrupt outputs simplify OR-ing into centralized fault manager; MIL-grade temp range supports uncooled cabinet deployment.
Redundant Telecom Line Card Buffer	Space-Qualified Payload Telemetry Cache
Use Scenario: Hot-swappable line card exchanging configuration and statistics with management CPU via shared memory. IC Role / Device Role / Timing Role: MASTER SRAM with CE-controlled write cycles and tEW ≤ 90ns enabling deterministic command execution under dynamic load. Use Value: ISB3 ≤ 10µA allows >1-year battery backup life; FP48 package withstands thermal cycling in telecom base stations.	Use Scenario: Radiation-tolerant telemetry buffer storing science instrument readings prior to downlink. IC Role / Device Role / Timing Role: Dual-port memory operating in extended temperature range (–55°C to +125°C) with guaranteed data retention at 2V. Use Value: MIL-PRF-38535 QML qualification ensures lot traceability and radiation hardness assurance; hermetic FP48 prevents outgassing in vacuum.

Real-Time Avionics Data Buffer

Dual-Core Industrial PLC Memory

Use Scenario: Shared memory between flight control processor and sensor acquisition unit in UAV autopilot.

IC Role / Device Role / Timing Role: MASTER dual-port SRAM providing atomic read/write access with BUSY-flag arbitration to prevent data corruption during simultaneous access.

Use Value: 100ns cycle time ensures sub-10µs inter-processor message latency; 2V retention preserves last-known state during brownout.

Use Scenario: Coordinated motion control between safety-critical and non-safety logic cores in modular PLC chassis.

IC Role / Device Role / Timing Role: Memory coherency hub enabling lock-free status exchange via INTL/INTR handshake and address-triggered interrupts.

Use Value: Open-drain interrupt outputs simplify OR-ing into centralized fault manager; MIL-grade temp range supports uncooled cabinet deployment.

Redundant Telecom Line Card Buffer

Space-Qualified Payload Telemetry Cache

Use Scenario: Hot-swappable line card exchanging configuration and statistics with management CPU via shared memory.

IC Role / Device Role / Timing Role: MASTER SRAM with CE-controlled write cycles and tEW ≤ 90ns enabling deterministic command execution under dynamic load.

Use Value: ISB3 ≤ 10µA allows >1-year battery backup life; FP48 package withstands thermal cycling in telecom base stations.

Use Scenario: Radiation-tolerant telemetry buffer storing science instrument readings prior to downlink.

IC Role / Device Role / Timing Role: Dual-port memory operating in extended temperature range (–55°C to +125°C) with guaranteed data retention at 2V.

Use Value: MIL-PRF-38535 QML qualification ensures lot traceability and radiation hardness assurance; hermetic FP48 prevents outgassing in vacuum.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C131-100AXC	1K × 8, 100ns, 5V, plastic TQFP-44; no built-in arbitration; requires external BUSY logic	Lacks on-chip arbitration and open-drain BUSY/INT; needs discrete logic for contention resolution	Select when cost-sensitive commercial design tolerates added PCB area and complexity for arbitration
IDT7140LA100L48B	SLAVE companion part; identical timing and retention, but BUSY pins are inputs only; no arbitration logic	Used only in MASTER/SLAVE pairs for >8-bit bus expansion; cannot operate standalone as memory controller	Select only when expanding data width to 16+ bits using 7130LA as MASTER; not a functional replacement

Compared with CY7C131-100AXC and IDT7140LA100L48B, the 7130LA100L48B uniquely integrates arbitration, retains data at 2V, and supports standalone MASTER operation - making it irreplaceable in compact, battery-backed, real-time dual-processor systems where external logic is prohibited.

Availability

7130LA100L48B is available at Aetrix Electronics and suitable for real-time avionics data buffering, redundant telecom line card memory, and space-qualified payload telemetry caching requiring stable component supply across extended temperature and lifecycle demands.

Supply support for 7130LA100L48B 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 high-performance silicon solutions, now part of Renesas Electronics.

The IDT7130/7140 family was designed specifically for deterministic, low-latency inter-processor communication in military, aerospace, and industrial control systems demanding concurrent memory access without software overhead or external arbitration logic.

FAQ

What is the function of BUSYL and BUSYR on the 7130LA100L48B?

BUSYL and BUSYR are open-drain arbitration flags on the 7130LA100L48B MASTER device. When asserted low, they inhibit writes to the corresponding port during contention. External pull-up resistors are mandatory. Their timing (tBAA ≤ 50ns, tBDD ≤ 65ns) ensures deterministic resolution of simultaneous access to the same memory location.

Does the 7130LA100L48B support true battery backup operation?

Yes, the 7130LA100L48B supports true battery backup: at V_CC = 2.0V, it retains data with ICCDR ≤ 4000µA (military grade). This is specified in Table 7 and enabled by CMOS-level CE disable (ISB3 mode), distinguishing it from SA variants which lack retention capability.

Can the 7130LA100L48B operate as a standalone memory without a 7140 SLAVE device?

Yes, the 7130LA100L48B functions fully as a standalone 8-bit dual-port SRAM. The SLAVE 7140 is optional and used only when expanding to 16+ bit data widths. The 7130LA100L48B contains complete arbitration logic, BUSY outputs, and interrupt generation - no companion device is required for basic dual-port operation.

What package type does the 7130LA100L48B use, and what are its mechanical constraints?

The 7130LA100L48B uses a 48-pin ceramic flatpack (FP48) with 0.75″ × 0.75″ body and 0.11″ height. Per Note 3 in Drawing 03F, the package is hermetic and side-brazed, requiring compatible reflow or soldering profiles. Pin 1 index mark is located at top-left corner when viewed from top.

How does interrupt generation work on the 7130LA100L48B?

Interrupts on the 7130LA100L48B are generated by address-matched writes: writing to A9–A0 = 3FF_H sets INTR, while 3FE_H sets INTL (Table 14). Both flags are open-drain and require pull-ups. Timing parameters tINS ≤ 60ns and tINR ≤ 60ns ensure fast, deterministic flag assertion/clearing synchronized to write cycles.

7130LA100L48B Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 48-LCC

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:: Surface Mount

Supplier Device Package:: 48-LCC (14.22x14.22)

7130LA100L48B FAQ

1.How can I place an order for 7130LA100L48B through Aetrix?

Please submit a Request for Quotation (RFQ) for 7130LA100L48B 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 7130LA100L48B reliable?

The price and inventory of 7130LA100L48B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA100L48B is usually 5 days.

3.What payment methods are accepted for 7130LA100L48B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA100L48B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7130LA100L48B?

7130LA100L48B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7130LA100L48B 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 7130LA100L48B?

For technical support, including 7130LA100L48B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA100L48B requirements.

6.How does Aetrix verify that 7130LA100L48B is sourced from the original manufacturer or authorized distributors?

All 7130LA100L48B 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 7130LA100L48B meets industry standards.

7.What is the process for return or replacement of 7130LA100L48B?

All 7130LA100L48B units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA100L48B, 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 7130LA100L48B part is unused and in its original packaging.

Return procedure for 7130LA100L48B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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