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Renesas 7132LA25JI
- Part No.:
- 7132LA25JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA25JI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,563
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Product details
Overview
IDT7132LA25JI 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, and battery-backed data retention at 2V. It operates across –40°C to +85°C, supports 25ns read/write cycle time, consumes 1mA full-standby current (ISB3), and enables error-free 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in industrial control and real-time signal processing systems.
For engineers reviewing the IDT7132LA25JI datasheet, IDT7132LA25JI pinout, IDT7132LA25JI application, or IDT7132LA25JI equivalent, key selection criteria include its master-mode arbitration capability, open-drain BUSY outputs requiring 270Ω pull-up, 2V data retention support, 48-pin flatpack (FP48) package, and compatibility with TTL-level 5V ±10% supply - all critical for deterministic dual-access memory subsystems in avionics and test equipment.
Technical Context
The IDT7132LA25JI 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) lines, enabling true asynchronous concurrent access. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR outputs based on address and chip-enable timing alignment, with tAPS = 5ns priority setup guaranteeing deterministic resolution.
As a low-power LA variant, it features CMOS-based power-down control via CE pins, achieving ISB3 = 0.2mA (typ.) at full standby with CMOS-level inputs, and retains valid data down to VCC = 2.0V. The BUSY outputs are open-drain and require external 270Ω pull-ups per datasheet Note 1 and Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits); provides 16KB addressable space per port, sufficient for real-time buffer storage in dual-CPU architectures. |
| Access Time (tAA) | 25ns max; ensures sub-40MHz synchronous interface timing without wait states in FPGA- or DSP-connected systems. |
| Data Retention Voltage | 2.0V min; enables seamless battery backup during main power loss in mission-critical instrumentation without external regulators. |
| Full Standby Current (ISB3) | 0.2mA typ.; reduces quiescent power to <1mW at 5V, critical for thermally constrained industrial modules. |
| Operating Temperature | –40°C to +85°C; qualified for extended industrial environments including factory automation PLCs and outdoor telecom base stations. |
| BUSY Output Type | Open-drain (BUSYL/BUSYR); requires 270Ω external pull-up per pin to ensure valid TTL-level assertion and prevent contention-induced glitches. |
| Supply Voltage | 5.0V ±10%; compatible with standard logic rails and eliminates need for dedicated voltage regulation in mixed-signal boards. |
Pinout & Package
Package: 48-pin Flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, hermetically sealed for high-reliability industrial/military use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane; failure causes timing skew and increased noise susceptibility. |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins (only one in FP48) must be decoupled with 0.1µF ceramic near the pin. |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; drives ISB1/ISB2/ISB3 current states and triggers arbitration logic when both asserted. |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state during disable prevents bus contention in shared-memory topologies. |
| R/WL / R/WR | Read/write control (left/right) | Active-low write; high = read; determines direction of data flow on I/O0–I/O7 pins for each port independently. |
| BUSYL / BUSYR | Arbitration status (output) | Open-drain master-only flags; low indicates port contention; requires 270Ω pull-up to VCC per datasheet Note 1. |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address buses (2048 locations); matched routing required between ports to maintain tAPS ≤ 5ns for reliable arbitration. |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional data (left/right) | 8-bit parallel data paths; high-impedance when OE or CE inactive; slew rate controlled for EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous same-address access deterministically using tAPS = 5ns setup, eliminating need for external glue logic in dual-processor systems. |
| Open-drain BUSY outputs with pull-up requirement | Enables wired-OR expansion across multiple MASTER/SLAVE arrays without external AND gates, simplifying wide-bus designs. |
| 2V data retention (LA version only) | Preserves memory contents during brown-out or battery switchover, supporting fail-safe state recovery in safety-critical controllers. |
| TTL-compatible 5V operation | Direct interfacing with legacy microcontrollers, FPGAs, and ASICs without level-shifting, reducing BOM count and layout complexity. |
| Industrial temperature range (–40°C to +85°C) | Validated performance across full range ensures reliability in uncontrolled environments like motor drives and outdoor sensors. |
Applications
| Real-Time Digital Signal Processing | Avionics Flight Control Systems |
|---|---|
Use Scenario: Dual-DSP architecture where one processor writes sensor data while another reads for filtering and actuator command generation. IC Role / Device Role / Timing Role: IDT7132LA25JI acts as MASTER shared memory buffer with hardware arbitration preventing race conditions during concurrent access. Use Value: 25ns access and deterministic BUSY resolution eliminate software locks, enabling sub-10µs inter-processor latency critical for closed-loop stability. |
Use Scenario: Redundant flight management computers sharing navigation state variables with guaranteed atomic update semantics. IC Role / Device Role / Timing Role: IDT7132LA25JI serves as fault-tolerant shared memory with 2V data retention preserving state during primary power interruption. Use Value: Open-drain BUSY outputs enable seamless integration into MIL-STD-1553 bus arbitration schemes without additional logic. |
| Automated Test Equipment (ATE) | Industrial Programmable Logic Controllers |
Use Scenario: High-speed pattern generator capturing stimulus-response sequences with simultaneous waveform analysis and storage. IC Role / Device Role / Timing Role: IDT7132LA25JI functions as dual-port FIFO buffer, allowing continuous streaming write from DAC while CPU reads processed results. Use Value: 48-pin FP48 package provides hermetic sealing and thermal stability required for 72-hour burn-in testing at +85°C. |
Use Scenario: Distributed I/O controller synchronizing motion axis commands across multiple servo drives via shared memory map. IC Role / Device Role / Timing Role: IDT7132LA25JI operates as MASTER in width-expanded configuration with IDT7142 SLAVEs for 16-bit word access. Use Value: tBDD ≤ 35ns ensures valid data within 1 clock cycle after BUSY deassertion, meeting 1ms PLC scan time requirements. |
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 CY7C136-25JC | 2K × 8, 25ns, 5V, but no on-chip arbitration logic or BUSY outputs; requires external logic for contention management. | Lacks master/slave expansion capability; suitable only for non-contention dual-access or simple ping-pong buffering. | Select when arbitration is handled in firmware or external CPLD, and 2V retention is not required. |
| ISSI IS61LV25616AL-10TLI | 16K × 16, 10ns, 3.3V; higher density and speed but incompatible voltage and no BUSY arbitration; uses different pinout. | Requires level shifters and redesign for 5V systems; no direct replacement due to voltage and functional mismatch. | Choose only for new 3.3V designs needing greater bandwidth; not a drop-in alternative for IDT7132LA25JI. |
Compared with CY7C136-25JC and IS61LV25616AL-10TLI, the IDT7132LA25JI uniquely delivers integrated hardware arbitration, 2V battery retention, and 5V TTL compatibility - making it irreplaceable in legacy industrial and aerospace systems requiring deterministic dual-port behavior without added logic.
Availability
IDT7132LA25JI is available at Aetrix Electronics and suitable for real-time digital signal processing, avionics flight control systems, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT7132LA25JI 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas Electronics in 2019. IDT products are widely deployed in communications, computing, and industrial markets.
The IDT7132LA25JI belongs to IDT's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency shared memory in dual-processor, real-time control, and high-reliability embedded systems where hardware arbitration and battery backup are mandatory.
FAQ
What is the maximum operating temperature range for the IDT7132LA25JI?
The IDT7132LA25JI is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the "Recommended Operating Temperature and Supply Voltage" table (page 4). This range is validated across all electrical parameters including tAA = 25ns max, ISB3 = 0.2mA typ., and VDR = 2.0V data retention, making it suitable for factory-floor and outdoor deployment scenarios where ambient extremes occur.
Does the IDT7132LA25JI support battery backup, and what voltage is required?
Yes, the IDT7132LA25JI supports battery backup data retention at VCC = 2.0V minimum, as specified in the "Data Retention Characteristics (LA Version Only)" section (page 6). This feature is exclusive to LA variants and is guaranteed - though not production tested - ensuring memory state preservation during main power loss in safety-critical applications such as flight control or medical diagnostics.
How should the BUSY outputs on the IDT7132LA25JI be terminated?
The BUSYL and BUSYR pins on the IDT7132LA25JI are open-drain outputs and must be pulled up to VCC using 270Ω resistors, as explicitly stated in Note 1 (page 1) and Figure 3 (page 7). Failure to apply this pull-up results in undefined logic levels, causing arbitration failures and potential data corruption during port contention events.
Can the IDT7132LA25JI be used as a standalone dual-port RAM without a SLAVE device?
Yes, the IDT7132LA25JI functions fully as a standalone 2K × 8 dual-port SRAM with independent left/right access, arbitration, and BUSY signaling. Its MASTER designation refers to capability-not requirement-for pairing with IDT7142 SLAVE devices in width-expanded configurations; no external SLAVE is needed for basic dual-access operation.
What package type is used for the IDT7132LA25JI, and what are its mechanical dimensions?
The IDT7132LA25JI uses a 48-pin Flatpack (FP48) package with body dimensions approximately 0.75 in × 0.75 in × 0.11 in, as documented in the "Pin Configurations" note on page 2. This hermetically sealed ceramic package meets MIL-PRF-38535 QML requirements and is optimized for thermal stability and long-term reliability in harsh environments.
7132LA25JI 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:
- 25ns
- Access Time:
- 25 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)
7132LA25JI FAQ
1.How can I place an order for 7132LA25JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA25JI 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 7132LA25JI reliable?
The price and inventory of 7132LA25JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA25JI is usually 5 days.
3.What payment methods are accepted for 7132LA25JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA25JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA25JI?
7132LA25JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA25JI 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 7132LA25JI?
For technical support, including 7132LA25JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA25JI requirements.
6.How does Aetrix verify that 7132LA25JI is sourced from the original manufacturer or authorized distributors?
All 7132LA25JI 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 7132LA25JI meets industry standards.
7.What is the process for return or replacement of 7132LA25JI?
All 7132LA25JI units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA25JI, 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 7132LA25JI part is unused and in its original packaging.
Return procedure for 7132LA25JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA25JI 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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