My Inquiry
My Account
Renesas 7130LA35JI8
- Part No.:
- 7130LA35JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7130LA35JI8.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,085
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7130LA35JI8 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 access time, 1 μW standby power (typ.), and battery-backed data retention down to 2 V. It enables simultaneous independent read/write access from left and right ports in real-time inter-processor communication systems.
For engineers reviewing the 7130LA35JI8 datasheet, 7130LA35JI8 pinout, 7130LA35JI8 application, or 7130LA35JI8 equivalent, this page delivers verified timing parameters, port arbitration behavior, BUSY/INT flag operation, and industrial-grade (-40°C to +85°C) thermal performance for deterministic dual-port memory integration.
Technical Context
The 7130LA35JI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY output assertion when both ports access the same address, with tBDD = 35 ns (max) delay from BUSY deassertion to valid read data.
As a MASTER device, it provides open-drain BUSYL/BUSYR outputs requiring external pull-up resistors, supports INTL/INTR interrupt signaling for port-to-port notification, and maintains data integrity during low-voltage battery backup (VDR = 2.0 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 × 8 bits - supports byte-wide data paths without external width expansion logic |
| Access Time (tAA) | 35 ns max - guarantees sub-29 MHz sustained read throughput per port |
| Standby Current (ISB3) | 0.2 µA typ. - enables ultra-low-power hold mode during system sleep states |
| Data Retention Voltage | 2.0 V - allows direct connection to coin-cell batteries for nonvolatile memory preservation |
| Operating Temperature | -40°C to +85°C - qualified for industrial embedded control and motor drive applications |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard TTL/CMOS 5 V rails without regulation overhead |
| Port Arbitration | Hardware-based BUSY flag with tAPS = 5 ns setup - eliminates software polling for conflict resolution |
Pinout & Package
7130LA35JI8 is packaged in a 48-pin ceramic flatpack (FP48) with 0.75" × 0.75" footprint and 0.11" height. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A9L | Left port address inputs | 10-bit address bus for left-side memory access; no internal latching |
| A0R–A9R | Right port address inputs | Independent 10-bit address bus enabling concurrent addressing |
| I/O0L–I/O7L | Left port bidirectional data | High-impedance tri-state I/O; driven only when CEL = L and R/WL = H (read) or L (write) |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left port; no shared data bus routing required |
| CEL / CER | Chip enable (active low) | Gate for port activation; ISB2 current applies when one CE = L, other = H |
| R/WL / R/WR | Read/write direction control | Active-high for read, active-low for write; determines I/O driver state |
| OEL / OER | Output enable (active low) | Controls output drivers independently of CE; enables high-Z during write cycles |
| BUSYL / BUSYR | Arbitration status flags | Open-drain outputs; require 4.7 kΩ pull-up to VCC; assert LOW during address conflict |
| INTL / INTR | Interrupt request outputs | Push-pull active-low flags for cross-port event signaling (e.g., mailbox full) |
| VCC / GND | Power supply terminals | Four VCC and four GND pins distributed for low-inductance decoupling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access without external glue logic or firmware intervention |
| Battery backup data retention | Maintains stored data at 2.0 V supply - eliminates need for external SRAM + battery + supervisor IC |
| Dual independent asynchronous ports | Enables real-time data exchange between two processors or DMA engines without clock domain synchronization |
| Open-drain BUSY outputs | Allows wired-OR connection of multiple 7130LA devices for scalable multi-master memory systems |
| Industrial temperature range | Validated operation from -40°C to +85°C - suitable for factory automation and transportation electronics |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion results and control commands via shared memory with deterministic latency. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acts as synchronized mailbox with hardware arbitration preventing data corruption during concurrent access. Use Value: Eliminates software semaphores and reduces inter-processor latency by 100% versus UART/SPI handshaking. | Use Scenario: A DSP writes processed audio frames into memory while an ARM host reads them for network streaming. IC Role / Device Role / Timing Role: Provides zero-wait-state buffer with independent read/write ports operating at full 28.6 MHz bandwidth (1/35 ns). Use Value: Sustains 8 MB/s aggregate throughput without FIFO overflow or frame drop under burst load. |
| Motor Control Co-Processing | Industrial PLC Data Exchange |
Use Scenario: FPGA-based motion controller writes position setpoints to RAM while MCU reads them for PID loop execution. IC Role / Device Role / Timing Role: Acts as deterministic, low-jitter interface between hard real-time FPGA logic and deterministic MCU firmware. Use Value: Guarantees <35 ns worst-case parameter update latency - meets IEC 61800-3 functional safety timing constraints. | Use Scenario: PLC main CPU and I/O processor share configuration tables and status registers across dual-port memory. IC Role / Device Role / Timing Role: Enables atomic read-modify-write operations on shared variables using BUSY-driven arbitration. Use Value: Prevents race conditions in ladder logic scan cycles without requiring external lock controllers or dual-clock synchronizers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-35JC | 35 ns access, 5 V, 1K × 8, but lacks on-chip arbitration and BUSY logic; requires external logic for conflict resolution | No hardware arbitration - unsuitable for true real-time co-processor systems without added complexity | Select only if cost sensitivity outweighs deterministic arbitration needs and board space permits discrete logic |
| AS7C31025B-35JC | 35 ns access, 5 V, 1K × 8, CMOS-only design; no battery retention, no BUSY/INT signals, commercial temp only (0°C to +70°C) | Lacks industrial temp rating and data retention - invalid for battery-backed or extended-temperature deployments | Acceptable only for non-critical consumer-grade applications with stable 5 V supply and ambient cooling |
Compared with CY7C133-35JC and AS7C31025B-35JC, the 7130LA35JI8 uniquely integrates arbitration, interrupt, and 2 V data retention - delivering a complete, self-contained dual-port solution for industrial real-time systems where reliability and deterministic timing are mandatory.
Availability
7130LA35JI8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial PLC data exchange, and motor control co-processing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for 7130LA35JI8 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 family was designed specifically for deterministic, low-latency dual-ported memory applications in industrial control, avionics, and telecommunications infrastructure where hardware arbitration and battery backup are essential.
FAQ
What is the guaranteed maximum access time for the 7130LA35JI8?
The 7130LA35JI8 has a guaranteed maximum address access time (tAA) of 35 ns across its full industrial temperature range (-40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This value is production-tested and specified in Table 09a of the official datasheet, ensuring deterministic timing for real-time system design.
Does the 7130LA35JI8 support battery backup, and what voltage is required?
Yes, the 7130LA35JI8 supports battery backup with guaranteed data retention at VCC = 2.0 V (min), as confirmed in Table 07. This enables direct connection to a 2 V lithium coin cell during main power loss, preserving memory contents without external supervision circuitry.
How does the BUSY arbitration mechanism work on the 7130LA35JI8?
The 7130LA35JI8 uses hardware-based BUSY arbitration: when both ports attempt access to the same address, BUSYL or BUSYR asserts LOW (open-drain) to block the later-arriving write. The tAPS = 5 ns priority setup time ensures deterministic winner selection, and tBDD = 35 ns defines the delay from BUSY deassertion to valid read data.
Can the 7130LA35JI8 operate in a MASTER/SLAVE configuration with the IDT7140?
Yes - the 7130LA35JI8 is designated as the MASTER device and is fully compatible with IDT7140 SLAVE devices for 16-bit-or-wider memory expansion. The MASTER provides BUSY output and INT signaling; the SLAVE accepts BUSY input and responds to arbitration, enabling seamless width scaling without speed penalty.
What package type is used for the 7130LA35JI8, and what are its mechanical dimensions?
The 7130LA35JI8 uses a 48-pin ceramic flatpack (FP48) package measuring approximately 0.75 inch × 0.75 inch × 0.11 inch (19.05 mm × 19.05 mm × 2.79 mm), as documented in Note 3 of the Pin Configurations section. This hermetic package ensures reliability in harsh industrial environments.
7130LA35JI8 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7130LA35JI8 FAQ
1.How can I place an order for 7130LA35JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7130LA35JI8 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 7130LA35JI8 reliable?
The price and inventory of 7130LA35JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7130LA35JI8 is usually 5 days.
3.What payment methods are accepted for 7130LA35JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7130LA35JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7130LA35JI8?
7130LA35JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7130LA35JI8 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 7130LA35JI8?
For technical support, including 7130LA35JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7130LA35JI8 requirements.
6.How does Aetrix verify that 7130LA35JI8 is sourced from the original manufacturer or authorized distributors?
All 7130LA35JI8 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 7130LA35JI8 meets industry standards.
7.What is the process for return or replacement of 7130LA35JI8?
All 7130LA35JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7130LA35JI8, 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 7130LA35JI8 part is unused and in its original packaging.
Return procedure for 7130LA35JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7130LA35JI8 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…
