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Renesas 7132LA55J
- Part No.:
- 7132LA55J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA55J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,226
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Product details
Overview
IDT7132LA55J 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 55 ns maximum read/write cycle time. It operates at 5V ±10%, supports industrial temperature range (–40°C to +85°C), and enables battery-backed data retention down to 2V. It is used in real-time embedded systems requiring concurrent access from two independent controllers - such as digital signal processors and microcontrollers sharing memory in radar or avionics subsystems.
For engineers reviewing the IDT7132LA55J datasheet, IDT7132LA55J pinout, IDT7132LA55J application, or IDT7132LA55J equivalent, key selection considerations include its master-mode arbitration capability, open-drain BUSY outputs requiring 270Ω pull-up resistors, 2V data retention support, 48-pin flatpack (FP48) package, and compatibility with IDT7142LA slave devices for 16-bit+ bus expansion.
Technical Context
The IDT7132LA55J implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR outputs when both ports access the same address, enabling hardware flow control without external logic.
As a MASTER device, it features open-drain BUSY outputs (requiring external 270Ω pull-ups), while SLAVE IDT7142 devices accept BUSY as an input to inhibit writes. The device supports TTL-compatible signaling, automatic power-down via CE control, and retains data at 2V - a feature exclusive to LA-grade parts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit data width); sufficient for small real-time buffers or register-mapped shared memory in DSP/microcontroller co-processing. |
| Access Time | 55 ns max (tAA, tACE, tAOE); ensures deterministic latency for time-critical read operations in industrial control loops. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with legacy 5V TTL/CMOS system rails without level-shifting. |
| Data Retention | 2.0 V minimum (LA only); enables backup operation from coin-cell or supercapacitor during main power loss. |
| Standby Current | 1 µA typical (ISB3, full CMOS standby); critical for low-power modes in battery-operated instrumentation. |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for deployment in automotive ECUs and factory automation hardware. |
| Package | 48-pin flatpack (FP48); hermetically sealed, leadless ceramic package suitable for high-reliability military/industrial applications. |
Pinout & Package
Package: 48-pin flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, hermetic ceramic construction with side-brazed leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane; required for noise immunity and proper CMOS threshold referencing. |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins must be decoupled locally with 0.1 µF ceramic capacitor. |
| CEL / CER (Pins 3, 4) | Chip enable (left/right) | Active-low enables respective port; drives device into low-power ISB1/ISB2 standby when high. |
| OEL / OER (Pins 5, 43) | Output enable (left/right) | Active-low controls I/O drivers; sets I/O pins to high-impedance when deasserted, enabling bus sharing. |
| R/WL / R/WR (Pins 6, 42) | Read/write control (left/right) | Low = write, high = read; determines direction of data transfer on associated I/O bus. |
| BUSYL / BUSYR (Pins 7, 41) | Busy flag (left/right) | Open-drain outputs (IDT7132 only); require 270Ω pull-up to VCC; assert low during port contention to stall writes. |
| A0L–A10L / A0R–A10R (Pins 8–18, 31–40) | Address inputs (left/right) | 11-bit address buses select one of 2048 memory locations independently per port. |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 19–23, 26–30, 32–39) | Data I/O (left/right) | Bi-directional 8-bit data paths; driven by internal latches during write, tri-stated when OE high or CE high. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous accesses to identical addresses without external logic; guarantees deterministic priority via tAPS timing (5 ns setup). |
| Master-only BUSY outputs | Open-drain BUSYL/BUSYR provide hardware handshake signals to stall contending ports - eliminates software polling overhead. |
| 2V data retention | Preserves memory contents during brown-out or backup power mode; enables seamless fail-safe recovery in safety-critical systems. |
| Independent port power-down | CE-controlled standby reduces current to ≤1 µA per port (ISB3), enabling asymmetric power management in multi-processor systems. |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers and FPGAs without level translators; VIH = 2.2 V min, VIL = 0.8 V max. |
Applications
| Radar Signal Processing | Digital Avionics Display Buffer |
|---|---|
|
Use Scenario: Real-time FFT processing where DSP writes processed samples while display controller reads for rendering. IC Role / Device Role / Timing Role: IDT7132LA55J serves as MASTER dual-port RAM, arbitrating between TMS320C6000 DSP and FPGA-based graphics engine. Use Value: 55 ns access time ensures sub-microsecond latency for pixel update cycles; BUSY logic prevents corrupted frame buffer writes during concurrent access. |
Use Scenario: Shared memory between flight management computer (FMC) and multifunction display (MFD) processor in certified avionics. IC Role / Device Role / Timing Role: IDT7132LA55J acts as fault-tolerant shared register bank with 2V retention for last-known-state preservation during power interruption. Use Value: Industrial temperature rating (–40°C to +85°C) and FP48 hermetic package meet DO-160 environmental stress requirements. |
| Industrial PLC I/O Mapping | Military Vehicle Data Logger |
|
Use Scenario: Coordinated read/write between ARM-based controller and FPGA-based I/O sequencer managing analog/digital sensor banks. IC Role / Device Role / Timing Role: IDT7132LA55J provides deterministic memory arbitration using address-match BUSY assertion (tBAA ≤ 30 ns). Use Value: Independent CE/OE controls allow selective port disablement - reducing dynamic power to <200 µW during idle scan intervals. |
Use Scenario: Mission-critical black-box recorder capturing CAN and discrete sensor data across multiple vehicle subsystems. IC Role / Device Role / Timing Role: IDT7132LA55J functions as non-volatile scratchpad memory with battery backup, interfacing to TI C2000 MCU and Xilinx Spartan FPGA. Use Value: MIL-PRF-38535 QML-compliant manufacturing and 2V retention ensure data integrity under shock, vibration, and extended power loss. |
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 CY7C136-55JC | 55 ns access, 2K × 8, but no built-in BUSY arbitration; requires external logic for contention resolution. | Lacks master/slave expansion capability; not suitable for width-expanded 16-bit+ systems without added gates. | Choose when cost sensitivity outweighs arbitration convenience and board space allows discrete logic. |
| ISSI IS61LV25616AL-10TLI | 10 ns access, 16K × 16, LVCMOS 3.3V; incompatible voltage and bus width; no BUSY function. | Designed for modern low-voltage SoC interfaces; cannot substitute directly due to voltage, timing, and arbitration mismatch. | Consider only for greenfield 3.3V designs requiring higher density - not a drop-in replacement. |
Compared with CY7C136-55JC and IS61LV25616AL-10TLI, the IDT7132LA55J uniquely delivers integrated arbitration, 2V retention, and 5V TTL compatibility in a single FP48 package - making it irreplaceable for legacy industrial and defense systems requiring guaranteed contention-free dual-port operation.
Availability
IDT7132LA55J is available at Aetrix Electronics and suitable for radar signal processing, avionics display buffering, and industrial PLC I/O mapping requiring stable component supply across extended product lifecycles.
Supply support for IDT7132LA55J 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 real-time embedded systems needing deterministic, contention-free dual-ported memory - targeting aerospace, defense, and industrial control applications demanding reliability, low latency, and battery backup.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132LA55J?
BUSYL and BUSYR are open-drain output flags on the IDT7132LA55J that assert low when port contention occurs - i.e., when both left and right ports attempt to access the same memory address simultaneously. These signals require external 270Ω pull-up resistors to VCC and are used to stall the contending port's write operation, ensuring data integrity without software intervention. They are active only in MASTER configuration (IDT7132LA55J), unlike SLAVE IDT7142 devices where BUSY is an input.
Does the IDT7132LA55J support battery backup operation?
Yes, the IDT7132LA55J supports battery backup operation with guaranteed data retention at VCC = 2.0 V (typical), a feature exclusive to LA-grade variants. This enables the device to maintain memory contents during main power failure - critical for safety-critical systems like flight recorders or medical diagnostics equipment. Retention current is specified at ≤4 mA (military/industrial) and ≤1.5 mA (commercial) under 2V conditions.
Which package type does the IDT7132LA55J use, and what are its mechanical characteristics?
The IDT7132LA55J uses a 48-pin flatpack (FP48) package: hermetically sealed ceramic body measuring approximately 0.75 in × 0.75 in × 0.11 in, with side-brazed leads. This package meets MIL-PRF-38535 QML requirements for high-reliability applications and provides superior thermal stability and moisture resistance compared to plastic DIP or PLCC alternatives - essential for extended operation in harsh environments.
How does the IDT7132LA55J differ from the IDT7142LA55J in system implementation?
The IDT7132LA55J is a MASTER dual-port SRAM with on-chip arbitration logic and BUSY outputs, while the IDT7142LA55J is a SLAVE device with BUSY inputs and no arbitration circuitry. In width-expansion configurations, one IDT7132LA55J coordinates multiple IDT7142LA55J units - eliminating need for external AND gates. Using two IDT7132LA55J devices risks split-BUSY arbitration and undefined write inhibition, making correct MASTER/SLAVE pairing mandatory for reliable 16-bit+ memory systems.
What are the DC operating conditions for the IDT7132LA55J's input and output pins?
The IDT7132LA55J specifies VIH ≥ 2.2 V (min), VIL ≤ 0.8 V (max), and VOL ≤ 0.4 V (at IOL = 4 mA) for standard I/O pins. BUSY outputs have VOL ≤ 0.5 V at IOL = 16 mA due to open-drain design. Input leakage is ≤5 µA (LA version), and output leakage is ≤5 µA when CE = VIH. All values are guaranteed over –40°C to +85°C and 4.5–5.5 V supply, meeting TTL-level interoperability without level shifters.
7132LA55J 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:
- 55ns
- Access Time:
- 55 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)
7132LA55J FAQ
1.How can I place an order for 7132LA55J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA55J 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 7132LA55J reliable?
The price and inventory of 7132LA55J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA55J is usually 5 days.
3.What payment methods are accepted for 7132LA55J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA55J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA55J?
7132LA55J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA55J 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 7132LA55J?
For technical support, including 7132LA55J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA55J requirements.
6.How does Aetrix verify that 7132LA55J is sourced from the original manufacturer or authorized distributors?
All 7132LA55J 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 7132LA55J meets industry standards.
7.What is the process for return or replacement of 7132LA55J?
All 7132LA55J units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA55J, 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 7132LA55J part is unused and in its original packaging.
Return procedure for 7132LA55J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA55J Tags
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