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Renesas 7132LA35JI
- Part No.:
- 7132LA35JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA35JI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
IDT7132LA35JI from Integrated Device Technology (IDT) is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag, 35 ns maximum read cycle time, 5 V ±10% single-supply operation, and industrial temperature range (–40°C to +85°C). It enables full-speed, error-free 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the IDT7132LA35JI datasheet, IDT7132LA35JI pinout, IDT7132LA35JI application, or IDT7132LA35JI equivalent, key selection considerations include its open-drain BUSY outputs requiring 270 Ω pull-up resistors, battery-backed data retention at 2 V (LA variant only), TTL-compatible I/O, and 48-pin flatpack (FP48) packaging for high-reliability industrial deployments.
Technical Context
The IDT7132LA35JI implements independent left/right ports with separate address (A0–A10), control (CEL/CER, OEL/OER, R/WL/R/WR), and bidirectional I/O (I/O0–I/O7) buses, enabling true asynchronous concurrent access. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR outputs based on chip enable and address match timing - not read/write direction.
As a MASTER-only device, it features open-drain BUSY outputs (requiring external 270 Ω pull-ups), supports automatic power-down via CE-driven standby modes (ISB3 = 0.2 mA typ.), and guarantees 2 V data retention during battery backup - a capability exclusive to LA-grade variants and absent in SA versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit wide), sufficient for real-time buffer storage in dual-processor interconnects |
| Access Time | 35 ns max read cycle time (tRC), enabling synchronization with 28.6 MHz bus clocks in deterministic control loops |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with legacy TTL and mixed-signal industrial power rails |
| Operating Temperature | –40°C to +85°C industrial grade, qualified for deployment in motor drives and PLC backplanes |
| Data Retention | 2 V minimum VCC for data retention (LA-specific), allowing seamless switchover to backup battery without volatile data loss |
| Standby Current | 0.2 mA typical full-standby current (ISB3), critical for low-power hold modes in always-on edge nodes |
| Package | 48-pin flatpack (FP48), hermetically sealed for moisture resistance and thermal stability in harsh environments |
Pinout & Package
Package: 48-pin flatpack (FP48), body dimensions ≈ 0.75 in × 0.75 in × 0.11 in, hermetic ceramic construction rated for MIL-PRF-38535 QML compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure stable return path for both ports' I/O and core logic |
| VCC (Pin 25) | Power supply | Single 5 V supply powers entire dual-port array and arbitration logic; all VCC pins must be connected |
| CEL / CER (Pins 2, 47) | Chip enable - left/right | Active-low enables respective port; controls power-down entry (ISB1–ISB4 states) and arbitration activation |
| OEL / OER (Pins 3, 46) | Output enable - left/right | Active-low enables I/O drivers; high-impedance state prevents bus contention during shared-memory access |
| R/WL / R/WR (Pins 4, 45) | Read/write control - left/right | Active-low selects write mode; high enables read; determines data direction on bidirectional I/O bus |
| BUSYL / BUSYR (Pins 5, 44) | Arbitration status - left/right | Open-drain outputs indicating port contention; require 270 Ω pull-up resistors per datasheet Note 1 |
| A0L–A10L / A0R–A10R (Pins 6–16, 33–43) | Address inputs - left/right | 11-bit address buses (2048 locations); used by arbitration logic to detect simultaneous access to same location |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 17–23, 26–32) | Bidirectional data - left/right | 8-bit parallel data paths; tri-state controlled by OE and R/W to prevent cross-port interference |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous access to identical addresses without external logic, eliminating race conditions in dual-CPU systems |
| Open-drain BUSY outputs with 270 Ω pull-up requirement | Enables wired-OR of multiple BUSY signals in width-expanded arrays, avoiding need for discrete AND gates |
| 2 V battery backup data retention (LA variant only) | Preserves memory contents during main power failure, supporting fail-safe state recovery in industrial controllers |
| TTL-compatible I/O with 5 V ±10% supply | Direct interface with legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| MIL-PRF-38535 QML-compliant manufacturing | Meets military reliability standards for burn-in, screening, and lot traceability - critical for aerospace and defense programs |
Applications
| Industrial Motion Controller | Dual-Processor Communication Buffer |
|---|---|
Use Scenario: Real-time coordination between motion CPU and safety monitor CPU sharing position and status data. IC Role / Device Role / Timing Role: MASTER IDT7132LA35JI provides synchronized, contention-free access to shared command queue and encoder feedback buffers. Use Value: 35 ns tRC and hardware BUSY arbitration eliminate software polling delays and guarantee deterministic <1 µs interlock response. |
Use Scenario: High-throughput data exchange between ARM host and DSP co-processor in radar signal processing unit. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency mailbox with independent left/right I/O buses clocked by separate domains. Use Value: Concurrent read/write capability enables full-duplex streaming at 28.6 MB/s (1/35 ns), doubling effective bandwidth vs. single-port alternatives. |
| Redundant PLC Memory Module | Avionics Data Logger |
Use Scenario: Hot-swappable memory module maintaining consistent state across primary and backup PLC CPUs during failover. IC Role / Device Role / Timing Role: IDT7132LA35JI serves as fault-tolerant shared memory with battery-backed retention during power transitions. Use Value: 2 V data retention preserves last-known-safe state for >100 hours on backup coin cell, meeting IEC 61508 SIL-3 requirements. |
Use Scenario: Continuous flight parameter recording in commercial aircraft black box with guaranteed data integrity during power interruption. IC Role / Device Role / Timing Role: MASTER SRAM buffers sensor streams while enforcing atomic writes via BUSY-controlled arbitration. Use Value: FP48 hermetic package and –40°C to +85°C operation ensure reliability across cabin pressure and temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1371DV33-166AXC | 3.3 V supply, 166 MHz (6 ns) access, 16K × 16 organization, no built-in arbitration logic | Requires external priority encoder for contention resolution; suited for high-speed FPGA-based systems with voltage scaling | Select when migrating to 3.3 V infrastructure and adding custom arbitration; not drop-in for 5 V IDT7132LA35JI designs |
| IDT7142LA35JI | SLAVE-only variant; BUSY pins are inputs (not outputs); lacks on-chip arbitration logic; identical speed/package/temp | Used only in width-expansion configurations with IDT7132 master; cannot operate standalone as memory controller | Choose only as companion device in 16-bit+ systems; never substitutes for MASTER functionality of IDT7132LA35JI |
Compared with CY7C1371DV33-166AXC and IDT7142LA35JI, the IDT7132LA35JI uniquely integrates arbitration logic and open-drain BUSY outputs in a 5 V industrial-grade package - making it irreplaceable for legacy 5 V dual-CPU systems requiring hardware-enforced memory coherency without FPGA logic overhead.
Availability
IDT7132LA35JI is available at Aetrix Electronics and suitable for industrial motion controllers, redundant PLC modules, and avionics data loggers requiring stable component supply with long-term obsolescence management.
Supply support for IDT7132LA35JI 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.
The IDT7132/7142 family was designed specifically for deterministic dual-processor interconnects requiring hardware arbitration, battery-backed retention, and MIL-grade reliability - targeting aerospace, factory automation, and transportation control systems.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132LA35JI?
BUSYL and BUSYR are open-drain arbitration status outputs on the IDT7132LA35JI that indicate port contention when both left and right ports attempt simultaneous access to the same memory address. They require external 270 Ω pull-up resistors per datasheet Note 1 and are used to stall the contending port's write operation until the other port completes its access - ensuring data coherency without software intervention.
Does the IDT7132LA35JI support battery backup operation?
Yes, the IDT7132LA35JI supports battery backup operation with guaranteed data retention at VCC = 2.0 V (minimum), a feature exclusive to LA-grade variants. This allows the device to maintain stored data during main power failure, with typical data retention current of 100 µA (commercial) or 4000 µA (military/industrial) at 2 V, enabling fail-safe state preservation in critical control systems.
Can the IDT7132LA35JI operate as a standalone dual-port RAM without a slave device?
Yes, the IDT7132LA35JI can operate as a standalone 8-bit dual-port SRAM using its left and right ports independently. Its on-chip arbitration logic and BUSY outputs remain fully functional for internal contention detection. The SLAVE IDT7142 is required only when expanding data bus width beyond 8 bits (e.g., to 16 or 32 bits) in master/slave configurations.
What package type is used for the IDT7132LA35JI?
The IDT7132LA35JI uses a 48-pin flatpack (FP48) package with hermetic ceramic construction, measuring approximately 0.75 in × 0.75 in × 0.11 in. This package is MIL-PRF-38535 QML-compliant, providing enhanced thermal stability, moisture resistance, and reliability for industrial and aerospace applications where plastic DIP or PLCC packages are insufficient.
How does the IDT7132LA35JI differ from the IDT7132SA35JI?
The IDT7132LA35JI differs from the IDT7132SA35JI primarily in power consumption and data retention: the LA version offers 0.2 mA typical full-standby current (ISB3) versus 1.0 mA for SA, and supports 2 V battery backup data retention - a capability absent in SA variants. Both share identical 35 ns speed grade, FP48 package, and industrial temperature range.
7132LA35JI 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:
- 16Kbit
- Memory Organization:
- 2K 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)
7132LA35JI FAQ
1.How can I place an order for 7132LA35JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA35JI 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 7132LA35JI reliable?
The price and inventory of 7132LA35JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA35JI is usually 5 days.
3.What payment methods are accepted for 7132LA35JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA35JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA35JI?
7132LA35JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA35JI 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 7132LA35JI?
For technical support, including 7132LA35JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA35JI requirements.
6.How does Aetrix verify that 7132LA35JI is sourced from the original manufacturer or authorized distributors?
All 7132LA35JI 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 7132LA35JI meets industry standards.
7.What is the process for return or replacement of 7132LA35JI?
All 7132LA35JI units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA35JI, 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 7132LA35JI part is unused and in its original packaging.
Return procedure for 7132LA35JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA35JI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24C04C-SSHM-T
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AT24C08C-STUM-T
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