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Renesas 7132LA35FB
- Part No.:
- 7132LA35FB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-FlatPack
- Datasheet:
-
7132LA35FB.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 48FPACK
- Quantity:
- Payment:
- Shipping:
Inventory:3,116
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Product details
Overview
IDT7132LA35FB 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, features 35ns max read cycle time, 1μA full-standby current (ISB3), and operates across industrial temperature range (–40°C to +85°C). It is used in real-time digital signal processing systems requiring concurrent memory access without external arbitration logic.
For engineers reviewing the IDT7132LA35FB datasheet, IDT7132LA35FB pinout, IDT7132LA35FB application, or IDT7132LA35FB equivalent, key selection considerations include its master-mode BUSY arbitration capability, 2V data retention support (LA variant only), 48-pin flatpack package compatibility, and timing-critical port-to-port contention resolution in dual-CPU or DMA+processor architectures.
Technical Context
The IDT7132LA35FB implements hardware-based port arbitration using address and chip-enable inputs to assert open-drain BUSYL/BUSYR outputs-no external logic required. Its arbitration logic guarantees deterministic priority resolution when both ports access the same address, with tAPS = 5ns setup time ensuring correct BUSY assertion timing.
It supports two independent control domains: left port (CEL/OEL/R/WL/A0L–A10L/I/O0L–I/O7L) and right port (CER/OER/R/WR/A0R–A10R/I/O0R–I/O7R), each with dedicated CE-driven power-down (ISB1–ISB4). The LA variant enables 2V battery backup mode with ICCDR ≤ 4mA retention current under MIL-PRF-38535 QML-compliant construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 bits (2048 words × 8-bit wide), dual independent ports |
| Access Time (tRC) | 35ns max - defines minimum read cycle interval for guaranteed valid data |
| Full Standby Current (ISB3) | 0.2μA typ. - ultra-low power state when both ports disabled with CMOS-level inputs |
| Data Retention Voltage | 2.0V min - maintains stored data during main VCC loss, critical for fail-safe systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control and avionics subsystems |
| Supply Voltage | 4.5V to 5.5V - TTL-compatible single 5V ±10% rail, no auxiliary supplies needed |
| Arbitration Priority Setup (tAPS) | 5ns min - ensures deterministic BUSY assertion when address match occurs within timing window |
Pinout & Package
Package: 48-pin Flatpack (FP48), hermetically sealed, body size ≈ 0.75 in × 0.75 in × 0.11 in, lead finish gold-plated, compliant with MIL-PRF-38535 QML Class B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Two dedicated ground pins ensure low-impedance 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 | Chip Enable (Left/Right) | Active-low enables respective port; controls dynamic/standby current states (ISB1–ISB4) |
| OEL / OER | Output Enable (Left/Right) | Active-low enables I/O drivers; high-Z state prevents bus contention during inactive cycles |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write command; determines direction of data flow on I/O lines |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-drain outputs (requires 270Ω pull-up); indicate port contention for arbitration coordination |
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address buses select one of 2048 locations per port independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data paths; high-impedance when OE or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Eliminates need for external priority encoder or glue logic in dual-processor memory sharing |
| Open-drain BUSY outputs with 270Ω pull-up requirement | Enables wired-OR expansion across multiple MASTER devices without logic gates |
| 2V data retention (LA variant only) | Preserves memory contents during brown-out or controlled power-down sequences |
| Independent per-port power management | Allows one port to remain active while the other enters ISB2/ISB4 standby, reducing system power |
| MIL-PRF-38535 QML compliance | Validated for high-reliability military/aerospace applications with screening and traceability |
Applications
| Real-Time Digital Signal Processing | Dual-Processor Shared Memory |
|---|---|
Use Scenario: Simultaneous FFT computation and filtering where one processor writes sensor samples while another reads and processes them. IC Role / Device Role / Timing Role: MASTER IDT7132LA35FB acts as shared buffer with hardware arbitration preventing sample corruption during concurrent access. Use Value: 35ns tRC and deterministic tBDD ≤ 35ns enable sub-microsecond inter-processor handshaking without software overhead. |
Use Scenario: Host CPU and DSP coexist on same memory map, exchanging control structures and streaming buffers. IC Role / Device Role / Timing Role: IDT7132LA35FB serves as zero-wait-state dual-access scratchpad with BUSY signaling for atomic updates. Use Value: On-chip arbitration and tAPS = 5ns guarantee consistent write ordering even under worst-case address skew. |
| Avionics Data Acquisition | Industrial Motion Controller Buffer |
Use Scenario: Flight control computer reads telemetry while health monitor writes diagnostic logs to same memory region. IC Role / Device Role / Timing Role: IDT7132LA35FB provides radiation-tolerant, QML-qualified shared storage with 2V retention for safe shutdown logging. Use Value: MIL-PRF-38535 qualification and 2V data retention ensure integrity during power transients common in aircraft electrical systems. |
Use Scenario: PLC CPU updates motion trajectory tables while servo driver reads next segment in real time. IC Role / Device Role / Timing Role: MASTER IDT7132LA35FB coordinates synchronized table updates using BUSY to stall driver during writes. Use Value: Hardware BUSY flag eliminates polling or interrupt latency, enabling deterministic <100ns response to memory contention. |
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 | 35ns access, 2K×8, but no on-chip arbitration logic; BUSY requires external logic | Lacks integrated master/slave arbitration; requires discrete AND/OR gates for contention handling | Select when cost sensitivity outweighs board space and design complexity concerns |
| IDT7142LA35FB | Same speed/package, but SLAVE-only: BUSY pins are inputs, no arbitration logic | Must be paired with IDT7132LA35FB in width-expansion configurations; cannot operate standalone as master | Choose only as companion device in 16-bit+ bus systems where IDT7132LA35FB serves as master |
Compared with CY7C133-35JC and IDT7142LA35FB, the IDT7132LA35FB uniquely integrates arbitration logic and open-drain BUSY outputs-enabling drop-in replacement in legacy dual-CPU designs without redesigning contention-handling circuitry or adding discrete components.
Availability
IDT7132LA35FB is available at Aetrix Electronics and suitable for real-time digital signal processing, avionics data acquisition, and industrial motion controller buffer applications requiring stable component supply, long-term obsolescence management, and MIL-qualified reliability.
Supply support for IDT7132LA35FB 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, RF, and power management ICs for communications, computing, and industrial markets.
IDT7132LA35FB belongs to the IDT7132/7142 dual-port SRAM product line, designed specifically for deterministic, low-latency shared memory in safety-critical dual-processor and real-time control systems.
FAQ
What is the function of BUSYL and BUSYR on IDT7132LA35FB?
BUSYL and BUSYR are open-drain outputs indicating port contention when both left and right ports access the same memory address. They require 270Ω pull-up resistors and are asserted low to stall the contending port's write operation. This hardware arbitration is intrinsic to IDT7132LA35FB as a MASTER device and eliminates need for external logic.
Does IDT7132LA35FB support battery backup operation?
Yes, IDT7132LA35FB supports battery backup data retention at 2.0V (VDR), maintaining stored data when main VCC drops below operational range. This feature is exclusive to LA variants and is validated per datasheet Table 6, with ICCDR ≤ 4mA at VCC = 2V and TA = +25°C.
What is the significance of tAPS = 5ns in IDT7132LA35FB timing?
tAPS (Arbitration Priority Set-up Time) is the minimum time address signals must be stable before chip enable to ensure deterministic BUSY assertion. At 5ns, IDT7132LA35FB guarantees correct arbitration outcome even with tight routing skews between address and CE nets-critical for reliable operation in high-speed dual-CPU systems.
Can IDT7132LA35FB operate in commercial temperature range?
No, IDT7132LA35FB is specified only for industrial temperature range (–40°C to +85°C). The "LA" suffix denotes low-power/battery-retention variant qualified for industrial use; commercial-grade versions use "SA" suffix (e.g., IDT7132SA35FB) and are not interchangeable.
How does IDT7132LA35FB differ from IDT7142LA35FB?
IDT7132LA35FB is a MASTER device with on-chip arbitration logic and BUSY outputs, while IDT7142LA35FB is a SLAVE device with BUSY inputs and no arbitration logic. IDT7132LA35FB can operate standalone; IDT7142LA35FB must be paired with a MASTER to implement width expansion or contention handling.
7132LA35FB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-FlatPack
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-FPACK
7132LA35FB FAQ
1.How can I place an order for 7132LA35FB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA35FB 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 7132LA35FB reliable?
The price and inventory of 7132LA35FB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA35FB is usually 5 days.
3.What payment methods are accepted for 7132LA35FB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA35FB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA35FB?
7132LA35FB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA35FB 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 7132LA35FB?
For technical support, including 7132LA35FB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA35FB requirements.
6.How does Aetrix verify that 7132LA35FB is sourced from the original manufacturer or authorized distributors?
All 7132LA35FB 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 7132LA35FB meets industry standards.
7.What is the process for return or replacement of 7132LA35FB?
All 7132LA35FB units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA35FB, 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 7132LA35FB part is unused and in its original packaging.
Return procedure for 7132LA35FB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA35FB Tags
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