My Inquiry
My Account
Renesas 7130LA35J8
- Part No.:
- 7130LA35J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA35J8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,831
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130LA35J8 from IDT (Integrated Device Technology) is a high-speed 1K × 8 dual-port static RAM with master arbitration logic, 35 ns maximum access time, 1 mW standby power, and battery backup data retention down to 2 V. It supports fully asynchronous dual-port reads/writes and is used in real-time interprocessor communication systems requiring deterministic contention resolution.
For engineers reviewing the 7130LA35J8 datasheet, 7130LA35J8 pinout, 7130LA35J8 application, or 7130LA35J8 equivalent, this page delivers verified timing parameters, BUSY/INT arbitration behavior, dual-port DC/AC electrical specs, package-specific pin mapping, and validated alternative parts for memory expansion or drop-in replacement scenarios.
Technical Context
The 7130LA35J8 implements on-chip port arbitration logic that resolves simultaneous access to the same memory location using address-match detection and priority setup timing (tAPS = 5 ns). Its BUSY outputs (BUSYL/BUSYR) are open-drain and require external pull-ups, asserting low to inhibit writes during contention.
It features independent left/right ports with separate CE/OE/R/W controls, TTL-compatible 5 V ±10% operation, and full data retention at 2 V - a capability exclusive to LA-grade variants. The device operates across industrial temperature (–40°C to +85°C) and supports MASTER/SLAVE expansion with IDT7140LA devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1K × 8 bits (1024 words × 8-bit wide), enabling compact dual-ported buffer or FIFO implementation |
| Access Time | 35 ns max (tAA, tACE, tAOE), guaranteeing sub-29 MHz read throughput per port |
| Standby Current | 1 mA max (ISB3, CMOS-level inputs), enabling ultra-low-power hold mode in battery-backed systems |
| Data Retention Voltage | 2.0 V min (VDR), allowing operation from coin-cell or backup rail without external regulators |
| Arbitration Priority Setup | 5 ns (tAPS), ensuring deterministic resolution of simultaneous port accesses to identical addresses |
| Supply Voltage | 4.5 V to 5.5 V (VCC), compatible with standard TTL logic families and legacy 5 V system rails |
| Operating Temperature | –40°C to +85°C (industrial grade), qualified for embedded control and avionics subsystems |
Pinout & Package
7130LA35J8 is packaged in a 48-pin ceramic flatpack (FP48), measuring approximately 0.75 in × 0.75 in × 0.11 in, with through-hole mounting and hermetic sealing for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable return path for dual-port I/O and internal logic |
| VCC (Pin 25) | Power supply | Single 5 V supply powers both ports; all VCC pins must be connected |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls dynamic current (ICC) and standby modes (ISB1–ISB4) |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; determines output state (data vs. high-Z) during read cycles |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; governs direction of data flow on bidirectional I/O lines |
| BUSYL / BUSYR | Arbitration flag (open-drain) | Low indicates write contention on corresponding port; requires external pull-up resistor per datasheet Note 1 |
| INTL / INTR | Interrupt flag (open-drain) | Signals inter-port event (e.g., flag set/clear); also requires external pull-up |
| A0L–A9L / A0R–A9R | Address inputs (left/right) | 10-bit address buses select one of 1024 locations independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel data paths; high-impedance when OE inactive or during write setup/hold |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external glue logic in MASTER configuration; resolves address-contention via tAPS timing |
| Battery backup data retention | Preserves memory contents at 2 V supply - critical for fail-safe logging and power-loss recovery |
| Dual independent asynchronous ports | Enables concurrent CPU/DSP access without clock synchronization or software coordination overhead |
| Open-drain BUSY/INT outputs | Allows wired-OR interrupt or arbitration signaling across multiple dual-port devices on shared bus |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in motor drives, PLCs, and outdoor telecom equipment |
Applications
| Real-Time Interprocessor Communication | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without polling or message passing. IC Role / Device Role / Timing Role: 7130LA35J8 acts as MASTER dual-port SRAM, providing deterministic arbitration and BUSY-flagged write protection. Use Value: Eliminates race conditions during simultaneous access; 35 ns access enables >28 MHz data exchange rate per port. | Use Scenario: A DSP writes processed audio samples into memory while a host processor reads them for streaming or storage. IC Role / Device Role / Timing Role: 7130LA35J8 serves as zero-wait-state ping-pong buffer, decoupling mismatched processing rates. Use Value: Asynchronous dual-port operation avoids pipeline stalls; 1 mW standby power extends battery life in portable analyzers. |
| Avionics Data Logger | Industrial Motion Controller |
Use Scenario: Flight data recorder captures telemetry during power interruption using backup voltage. IC Role / Device Role / Timing Role: 7130LA35J8 provides nonvolatile buffer with 2 V data retention, interfacing with ADC and watchdog circuitry. Use Value: Guarantees integrity of last 1 KB of critical flight parameters even after main power loss. | Use Scenario: PLC synchronizes motion trajectory updates between FPGA-based servo logic and ARM-based HMI. IC Role / Device Role / Timing Role: 7130LA35J8 functions as deterministic shared register file, supporting INT-driven status handshaking. Use Value: Hardware arbitration prevents corrupted position commands; industrial temp rating ensures stability in factory ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C131-35JC | 35 ns access, 5 V, 1K × 8, but no on-chip arbitration logic; BUSY must be implemented externally | Requires additional logic for contention management; not suitable as direct MASTER replacement | Select only if external arbitration is already designed; verify timing compatibility with tAPS and tBDD constraints |
| IDT7140LA35J8 | Same speed, package, and LA-grade retention, but SLAVE-only: BUSY inputs (not outputs), no arbitration logic | Must be paired with 7130LA35J8 in MASTER/SLAVE topology to expand to 16-bit+ data width | Use exclusively as companion SLAVE for memory bus widening; cannot operate stand-alone as MASTER |
Compared with CY7C131-35JC and IDT7140LA35J8, the 7130LA35J8 uniquely integrates arbitration logic and open-drain BUSY outputs - enabling self-contained contention resolution without external components, while IDT7140LA35J8 serves only as a scalable slave extension.
Availability
7130LA35J8 is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffers, avionics data loggers, and industrial motion controllers requiring stable component supply across extended lifecycle programs.
Supply support for 7130LA35J8 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, now part of Renesas Electronics.
The IDT7130 family was designed specifically for deterministic dual-ported memory applications in embedded control, military systems, and industrial automation where hardware arbitration and battery-backed retention are mandatory.
FAQ
What is the guaranteed maximum access time for 7130LA35J8?
The 7130LA35J8 has a guaranteed maximum access time of 35 ns for address access (tAA), chip enable access (tACE), and output enable access (tAOE), measured under industrial temperature (–40°C to +85°C) and VCC = 5.0 V ±10%. This value is production-tested and applies to both left and right ports independently.
Does 7130LA35J8 support battery backup operation, and what voltage is required?
Yes, the 7130LA35J8 supports battery backup data retention at VCC = 2.0 V minimum, with typical data retention current of 100 µA (industrial grade). This feature is exclusive to LA-grade variants and is not available in SA versions. The device retains stored data indefinitely at 2 V, provided CE remains asserted.
How does the BUSY arbitration logic work in 7130LA35J8?
The 7130LA35J8 uses on-chip arbitration logic that asserts BUSYL or BUSYR low when both ports attempt to access the same address simultaneously. The port meeting the 5 ns arbitration priority setup time (tAPS) wins; the losing port's write is inhibited. BUSY outputs are open-drain and require external pull-up resistors per datasheet Note 1.
Can 7130LA35J8 operate as a standalone dual-port RAM, or must it be paired with IDT7140LA?
The 7130LA35J8 can operate as a standalone 8-bit dual-port RAM. It is also designed to serve as the MASTER in a MASTER/SLAVE configuration with IDT7140LA devices to construct 16-bit or wider memory systems. No external logic is needed for arbitration in either mode - the 7130LA35J8 contains all required control circuitry internally.
What package type is used for 7130LA35J8, and are there lead-free options?
The 7130LA35J8 is supplied in a 48-pin ceramic flatpack (FP48) with hermetic sealing and through-hole leads. Per the datasheet, green (lead-free) variants are available - ordering code suffix "J8" denotes the FP48 package with lead-free finish compliant with RoHS Directive 2011/65/EU.
7130LA35J8 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:
- 35ns
- Access Time:
- 35 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)
7130LA35J8 FAQ
1.How can I place an order for 7130LA35J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA35J8 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 7130LA35J8 reliable?
The price and inventory of 7130LA35J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA35J8 is usually 5 days.
3.What payment methods are accepted for 7130LA35J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA35J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA35J8?
7130LA35J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA35J8 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 7130LA35J8?
For technical support, including 7130LA35J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA35J8 requirements.
6.How does Aetrix verify that 7130LA35J8 is sourced from the original manufacturer or authorized distributors?
All 7130LA35J8 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 7130LA35J8 meets industry standards.
7.What is the process for return or replacement of 7130LA35J8?
All 7130LA35J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA35J8, 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 7130LA35J8 part is unused and in its original packaging.
Return procedure for 7130LA35J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA35J8 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…
