My Inquiry
My Account
Renesas 7130LA100J/2315
- Part No.:
- 7130LA100J/2315
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA100J/2315.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130LA100J/2315 from IDT is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 100 ns maximum read/write cycle time, TTL-compatible 5V ±10% operation, and 2V battery-backed data retention - used in real-time inter-processor communication systems requiring concurrent access to shared memory without external arbitration logic.
For engineers reviewing the 7130LA100J/2315 datasheet, 7130LA100J/2315 pinout, 7130LA100J/2315 application, or 7130LA100J/2315 equivalent, this device supports full asynchronous dual-port operation, on-chip BUSY flag arbitration, port-to-port interrupt signaling, and industrial temperature range (–40°C to +85°C) operation in 48-pin ceramic flatpack packaging.
Technical Context
The 7130LA100J/2315 implements fully independent left/right ports with separate address (A0L–A9L, A0R–A9R), data (I/O0L–I/O7L, I/O0R–I/O7R), and control lines (CEL/OEL/R/WL, CER/OER/R/WR), enabling simultaneous read/write operations across ports. Its on-chip arbitration logic resolves contention via open-drain BUSYL/BUSYR outputs that require external pull-up resistors.
As a MASTER device, it provides BUSY output flags and INTL/INTR interrupt generation for port-to-port handshaking; it supports battery backup mode at VCC = 2V with ≤4 mA retention current. The LA variant delivers 1 µA typical full-standby current (ISB3) under CMOS-level CE disable conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 (1024 words × 8 bits), dual-port SRAM with independent left/right address/data/control buses |
| Access Time (tAA) | 100 ns max - defines worst-case delay from valid address to stable output data on either port |
| Read Cycle Time (tRC) | 100 ns max - minimum interval between successive read operations on same port |
| Data Retention Voltage | 2.0 V min - enables nonvolatile memory hold during main power loss using backup battery |
| Standby Current (ISB3) | 0.2 µA typical - ultra-low full-standby power when both CE inputs held above VCC − 0.2 V |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage | 4.5 V to 5.5 V - single TTL-compatible 5V ±10% rail; no auxiliary supplies required |
Pinout & Package
7130LA100J/2315 is supplied in a 48-pin ceramic flatpack (FP48) package measuring approximately 0.75 in × 0.75 in × 0.11 in, with lead spacing compliant to MIL-STD-1835. All VCC pins must be decoupled locally; all GND pins require low-inductance ground connection.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | VCC | Primary 5V power supply inputs - all four must be connected and decoupled |
| 2, 23, 26, 47 | GND | Ground reference pins - all four require low-impedance PCB grounding |
| 3, 4, 5, 6, 7, 8, 9, 10 | I/O0L–I/O7L | Left-port bidirectional data bus - high-impedance when OEL = VIH or CEL = VIH |
| 11, 12, 13, 14, 15, 16, 17, 18 | I/O0R–I/O7R | Right-port bidirectional data bus - operates independently of left-port timing |
| 19, 20, 21, 22, 27, 28, 29, 30, 31, 32 | A0L–A9L | Left-port 10-bit address inputs - latched on CE or OE transition per read/write cycle |
| 33, 34, 35, 36, 37, 38, 39, 40, 41, 42 | A0R–A9R | Right-port 10-bit address inputs - fully asynchronous relative to left-port activity |
| 43 | CEL | Left-port chip enable - active-low; controls power state and port activation |
| 44 | OEL | Left-port output enable - active-low; places I/O0L–I/O7L in high-Z when deasserted |
| 45 | R/WL | Left-port read/write control - HIGH = read, LOW = write; synchronous with CEL |
| 46 | BUSYL | Left-port BUSY flag output - open-drain, requires external pull-up; asserts LOW during contention |
| 47 | INTL | Left-port interrupt output - open-drain; signals completion of interrupt-set address (3FEh) |
| 48 | VCC | Fourth VCC supply pin - mandatory connection for stable internal biasing |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same memory location via BUSY flag assertion - eliminates need for external priority encoder or glue logic |
| Port-to-port interrupt signaling | INTL/INTR outputs generate hardware interrupts on address-match events (e.g., 3FEh/3FFh), enabling lock-free synchronization between processors |
| Battery-backed data retention | Maintains stored data at 2V supply with ≤4 mA ICCDR - supports fail-safe operation during main power interruption |
| Ultra-low standby power | 0.2 µA ISB3 current enables >10-year battery life in always-on monitoring systems operating in full-standby mode |
| Industrial temperature qualification | Guaranteed operation from –40°C to +85°C with no parameter derating - suitable for embedded control in harsh environments |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
|
Use Scenario: Two microcontrollers exchange sensor fusion results and control commands via shared memory without software polling or OS intervention. IC Role / Device Role / Timing Role: 7130LA100J/2315 acts as a hardware-synchronized mailbox with BUSY arbitration and INT-driven notification - eliminating race conditions and reducing latency to sub-100ns. Use Value: Enables deterministic, zero-software-overhead communication in safety-critical avionics subsystems where RTOS scheduling jitter is unacceptable. |
Use Scenario: A DSP writes processed audio frames into shared memory while a host MCU reads them for network streaming or storage. IC Role / Device Role / Timing Role: 7130LA100J/2315 serves as a ping-pong buffer with independent port timing - allowing continuous write/read overlap without pipeline stalls. Use Value: Sustains 10 MB/s sustained throughput (100 ns cycle × 8-bit bus) with no wait states, matching real-time audio sampling rates up to 1.25 MSPS. |
| Redundant Controller Failover Memory | Industrial PLC Dual-CPU Coordination |
|
Use Scenario: Primary and backup controllers maintain identical state images in mirrored memory; upon failure detection, backup assumes control using preserved context. IC Role / Device Role / Timing Role: 7130LA100J/2315 provides atomic, contention-free state snapshotting via BUSY-controlled write serialization - ensuring memory coherency during switchover. Use Value: Achieves <10 µs failover latency with guaranteed data integrity, meeting SIL-3 requirements for process automation safety systems. |
Use Scenario: A PLC uses two CPUs - one for motion control, another for HMI and diagnostics - sharing I/O status and alarm logs via common memory. IC Role / Device Role / Timing Role: 7130LA100J/2315 functions as a deterministic interlock buffer with interrupt-triggered updates - preventing partial writes during CPU context switches. Use Value: Eliminates software mutexes and reduces firmware complexity by offloading synchronization to hardware arbitration logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C136-100JC | 1K × 16 organization, 100 ns access, 5V only, no built-in arbitration logic - requires external BUSY management | Requires additional discrete logic for contention resolution; lacks INT flag and battery retention | Select when wider data bus (16-bit) is needed and system-level arbitration can be implemented externally |
| AS7C31026B-100JC | 1M × 24 organization, 100 ns, 3.3V core, LVCMOS interface - no dual-port arbitration or BUSY/INT signals | Not pin-compatible; lacks master/slave arbitration, battery backup, and 5V tolerance | Choose for higher density and lower voltage systems where external arbitration and power management are acceptable |
Compared with CY7C136-100JC and AS7C31026B-100JC, the 7130LA100J/2315 uniquely integrates on-chip arbitration, interrupt signaling, and 2V data retention - reducing BOM count and simplifying design for real-time dual-CPU architectures requiring hardware-enforced memory coherency.
Availability
7130LA100J/2315 is available at Aetrix Electronics and suitable for industrial control systems, avionics data concentrators, and redundant PLC modules requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for 7130LA100J/2315 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 interface, and RF solutions, now part of Renesas Electronics.
The 7130LA100J/2315 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in military, industrial, and telecom infrastructure where hardware arbitration and battery backup are critical.
FAQ
What is the maximum operating temperature range for the 7130LA100J/2315?
The 7130LA100J/2315 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC electrical parameters in the datasheet, with no derating required. The device uses CMOS process technology optimized for thermal stability in embedded control environments, and its ceramic flatpack package enhances heat dissipation under continuous operation.
Does the 7130LA100J/2315 support true simultaneous read/write operations on both ports?
Yes, the 7130LA100J/2315 supports fully asynchronous, independent read and write operations on left and right ports - provided no address contention occurs. When both ports access the same memory location concurrently, on-chip arbitration logic asserts BUSYL or BUSYR to inhibit the later-arriving write, preserving data integrity without external logic. This behavior is documented in Truth Table III and timing waveforms DRW12–DRW15.
How does the battery backup function work on the 7130LA100J/2315?
The 7130LA100J/2315 enters data retention mode when VCC drops to 2.0 V, drawing ≤4 mA (typical) to maintain SRAM contents. This is enabled automatically - no control signal is required. The LA suffix denotes low-power retention capability, distinct from SA versions. Retention time exceeds 10 years with a standard CR2032 coin cell, assuming proper decoupling and minimal leakage paths on the PCB.
What are the key differences between the 7130LA100J/2315 and the 7140LA100J/2315?
The 7130LA100J/2315 is the MASTER device with BUSY outputs (BUSYL/BUSYR) and interrupt outputs (INTL/INTR); the 7140LA100J/2315 is the SLAVE with BUSY inputs only and no interrupt generation. MASTER supports on-chip arbitration and can operate standalone; SLAVE requires pairing with a MASTER for contention resolution. Both share identical timing, retention, and packaging specs.
Is the 7130LA100J/2315 pin-compatible with other speed grades in the 7130LA family?
Yes, all 7130LA variants (e.g., 7130LA25J, 7130LA35J, 7130LA55J, 7130LA100J) share identical FP48 pinout, electrical interface, and functional architecture - only access time and power consumption differ. A board designed for 7130LA100J/2315 can accept faster or slower speed grades without layout change, enabling performance tuning or cost optimization in volume production.
7130LA100J/2315 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/2315 FAQ
1.How can I place an order for 7130LA100J/2315 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA100J/2315 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/2315 reliable?
The price and inventory of 7130LA100J/2315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA100J/2315 is usually 5 days.
3.What payment methods are accepted for 7130LA100J/2315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA100J/2315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA100J/2315?
7130LA100J/2315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA100J/2315 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/2315?
For technical support, including 7130LA100J/2315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA100J/2315 requirements.
6.How does Aetrix verify that 7130LA100J/2315 is sourced from the original manufacturer or authorized distributors?
All 7130LA100J/2315 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/2315 meets industry standards.
7.What is the process for return or replacement of 7130LA100J/2315?
All 7130LA100J/2315 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA100J/2315, 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/2315 part is unused and in its original packaging.
Return procedure for 7130LA100J/2315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA100J/2315 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…
