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Renesas 7132LA25J8
- Part No.:
- 7132LA25J8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA25J8.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
IDT7132LA25J8 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 supports independent asynchronous read/write access on left and right ports, operates on single 5V ±10% supply, and targets real-time embedded systems requiring concurrent memory access-such as digital signal processors interfacing with host controllers.
For engineers reviewing the IDT7132LA25J8 datasheet, IDT7132LA25J8 pinout, IDT7132LA25J8 application, or IDT7132LA25J8 equivalent, key selection criteria include its 25ns max access time, 1mW standby power, industrial temperature range (–40°C to +85°C), open-drain BUSY outputs requiring 270Ω pull-up, and compatibility with MASTER/SLAVE width-expansion architectures using IDT7142.
Technical Context
The IDT7132LA25J8 implements hardware-based port arbitration via dedicated BUSYL/BUSYR open-drain outputs that assert when address contention occurs between ports. Its arbitration logic responds solely to chip enable (CEL/CER) and address (A0L–A10L / A0R–A10R) timing-not R/W state-ensuring deterministic priority resolution without external logic.
As a MASTER-only device, it integrates arbitration control circuitry and BUSY generation logic absent in SLAVE IDT7142 parts. The LA variant enables battery backup operation with 2V data retention, while active power consumption remains at 325mW (typ.) and full-standby current drops to 0.2mA (typ.) under CMOS-level inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit wide), enabling compact dual-access buffer storage |
| Access Time | 25ns maximum (industrial grade), supporting tight-timing DSP or microcontroller co-processor interfaces |
| Supply Voltage | 5.0V ±10%, compatible with standard TTL/CMOS logic families without level-shifting |
| Standby Current | 1mW typical (≈0.2mA at 5V), critical for low-power industrial systems during idle cycles |
| Data Retention | 2V minimum VCC, allowing backup from coin-cell batteries during main power loss |
| Operating Temperature | –40°C to +85°C, qualified for extended industrial environments without derating |
| Arbitration Logic | On-chip port-to-port conflict detection with BUSYL/BUSYR outputs, eliminating need for external arbitration ICs |
Pinout & Package
Package: 48-pin Flatpack (FP48), hermetically sealed, 0.75″ × 0.75″ × 0.11″ body size, suitable for high-reliability industrial and military applications.
| 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 5V supply powers entire device; all VCC pins must be connected per datasheet note |
| CEL / CER (Pins 3, 4) | Chip enable (left/right) | Active-low enables respective port; controls automatic power-down into ISB1/ISB2/ISB3/ISB4 modes |
| OEL / OER (Pins 5, 43) | Output enable (left/right) | Active-low enables I/O drivers; high-Z state prevents bus contention during inactive cycles |
| R/WL / R/WR (Pins 8, 23) | Read/write control (left/right) | Active-low write signal; determines direction of data transfer on enabled port |
| BUSYL / BUSYR (Pins 11, 22) | Busy flag (left/right) | Open-drain outputs requiring 270Ω pull-up; indicate address contention to stall conflicting writes |
| A0L–A10L / A0R–A10R (Pins 6,9–10,12–19,26–30,32–33,44–48) | Address inputs (left/right) | 11-bit address buses (2048 locations); matched routing required for arbitration timing integrity |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 7,20–21,34–42,45–48) | Data I/O (left/right) | Bidirectional 8-bit data paths; high-impedance when OE or CE inactive prevents bus loading |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Eliminates need for external priority encoders or glue logic in multi-processor memory sharing |
| Open-drain BUSY outputs | Enable wired-OR expansion across multiple MASTER devices without additional gates |
| 2V data retention (LA version) | Preserves memory contents during brown-out or battery-switchover without external backup circuitry |
| Independent port power-down | Allows one port to remain active while the other enters ultra-low-ISB3 mode (<0.2mA) |
| TTL-compatible signaling | Direct interface with legacy 5V microcontrollers, FPGAs, and ASICs without level translation |
Applications
| Digital Signal Processor (DSP) Co-Processor Interface | Real-Time Industrial Controller Memory Buffer |
|---|---|
Use Scenario: A DSP executes algorithmic processing while a host MCU manages I/O and scheduling; both require simultaneous, non-blocking access to shared parameter tables and FIFO buffers. IC Role / Device Role / Timing Role: IDT7132LA25J8 acts as MASTER dual-port RAM, providing deterministic arbitration and BUSY-driven stall signaling to prevent data corruption during concurrent reads/writes. Use Value: Enables zero-wait-state memory sharing between heterogeneous processors, reducing inter-processor communication latency by eliminating software semaphore overhead. |
Use Scenario: An industrial PLC uses two independent control loops-one for motion control, another for safety monitoring-each requiring dedicated access to shared sensor calibration data and actuator command history. IC Role / Device Role / Timing Role: IDT7132LA25J8 serves as fault-tolerant shared memory with built-in contention resolution, ensuring deterministic response even during transient voltage dips. Use Value: Guarantees atomic updates to critical control variables via hardware arbitration, preventing race conditions that could cause unsafe actuator behavior. |
| Width-Expanded Memory Subsystem (16-bit+) | Battery-Backed Configuration Storage |
Use Scenario: A telecom baseband processor requires 16-bit wide memory bandwidth but only 2K depth; multiple IDT7132LA25J8 (MASTER) and IDT7142LA25J8 (SLAVE) devices are combined in parallel. IC Role / Device Role / Timing Role: IDT7132LA25J8 functions as MASTER unit generating unified BUSY signals for the entire width-expanded array, coordinating write inhibition across all SLAVE devices. Use Value: Achieves full-speed 16-bit operation without cycle penalties or external arbitration logic, maintaining tRC = 25ns across the expanded bus. |
Use Scenario: A medical diagnostic instrument stores calibration coefficients, user preferences, and last-known operational state in nonvolatile memory; main power may be interrupted during battery replacement. IC Role / Device Role / Timing Role: IDT7132LA25J8 provides SRAM-based configuration storage with guaranteed 2V data retention, backed by onboard coin-cell battery. Use Value: Eliminates need for EEPROM wear-leveling or flash programming delays, enabling instant resume after power interruption with full data integrity. |
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 | 3.3V core supply, 15ns access, QDR architecture with separate read/write ports; no native BUSY arbitration | Requires external logic for contention management; suited for high-throughput packet buffering, not real-time deterministic arbitration | Select when migrating to 3.3V systems and prioritizing speed over hardware arbitration simplicity |
| ISSI IS61LV25616AL | Single-port 256K × 16, 10ns access, no dual-port or BUSY logic; lower cost but no concurrent access capability | Only supports sequential access; unsuitable for true multi-processor shared memory without software coordination | Choose only if application does not require simultaneous port access and cost is primary constraint |
Compared with IDT7132LA25J8, CY7C1371DV33 offers faster access but demands external arbitration design effort, while IS61LV25616AL lacks dual-port functionality entirely-making IDT7132LA25J8 uniquely suited for deterministic, low-latency, hardware-managed memory sharing in industrial control and DSP subsystems.
Availability
IDT7132LA25J8 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and telecommunications infrastructure requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535-compliant reliability.
Supply support for IDT7132LA25J8 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, RF, and power management ICs before its acquisition by Renesas Electronics in 2019. Known for high-reliability, high-performance memory solutions.
IDT7132LA25J8 belongs to the IDT7132/7142 dual-port SRAM family, designed specifically for real-time embedded systems requiring deterministic, hardware-arbitrated concurrent memory access between heterogeneous processors or functional blocks.
FAQ
What is the maximum operating temperature range for IDT7132LA25J8?
IDT7132LA25J8 is rated for industrial temperature operation from –40°C to +85°C. This specification is explicitly confirmed in the "Recommended Operating Temperature and Supply Voltage" table of the datasheet, and applies to the LA variant with 25ns speed grade. It is not qualified for military-grade –55°C to +125°C operation.
Does IDT7132LA25J8 support battery backup, and what voltage is required?
Yes, IDT7132LA25J8 supports battery backup with guaranteed data retention at VCC = 2.0V, as documented in the "Data Retention Characteristics (LA Version Only)" section. The device draws ≤100µA (typ.) in retention mode, enabling long-term hold using standard lithium coin cells without external regulators.
How does the BUSY arbitration logic function in IDT7132LA25J8?
IDT7132LA25J8 implements hardware arbitration by monitoring address and chip enable transitions on both ports. When contention is detected (matching addresses accessed concurrently), BUSYL or BUSYR asserts low (open-drain) to stall the later-arriving write. The arbitration decision depends on tAPS (5ns setup time), not R/W state, ensuring deterministic priority without software intervention.
What package type is used for IDT7132LA25J8, and are there pin-compatible alternatives?
IDT7132LA25J8 uses a 48-pin Flatpack (FP48) package, as confirmed in the "Pin Configurations" diagrams and ordering information. While IDT7132LA25J8 shares the same pinout with other 48-pin variants (e.g., DIP, LCC), FP48 is not pin-compatible with 52-pin PLCC versions due to differing pin count and layout-no drop-in substitution exists across package types.
Can IDT7132LA25J8 operate with only one port enabled while the other remains powered down?
Yes, IDT7132LA25J8 supports independent port power-down: asserting CEL = VIH disables the left port (ISB1/ISB3 mode), while CER = VIH disables the right port. In full-standby (ISB3), both ports draw only 0.2mA (typ.), enabling dynamic power gating in systems where one processor sleeps while the other remains active.
7132LA25J8 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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7132LA25J8 FAQ
1.How can I place an order for 7132LA25J8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA25J8 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 7132LA25J8 reliable?
The price and inventory of 7132LA25J8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA25J8 is usually 5 days.
3.What payment methods are accepted for 7132LA25J8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA25J8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA25J8?
7132LA25J8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA25J8 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 7132LA25J8?
For technical support, including 7132LA25J8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA25J8 requirements.
6.How does Aetrix verify that 7132LA25J8 is sourced from the original manufacturer or authorized distributors?
All 7132LA25J8 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 7132LA25J8 meets industry standards.
7.What is the process for return or replacement of 7132LA25J8?
All 7132LA25J8 units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA25J8, 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 7132LA25J8 part is unused and in its original packaging.
Return procedure for 7132LA25J8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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