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Renesas 7132LA20J
- Part No.:
- 7132LA20J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA20J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
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Product details
Overview
IDT7132LA20J 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 20 ns max read cycle time, 1 mW typical standby power, and operates on a single 5V ±10% supply. It is used in real-time embedded systems requiring concurrent memory access-such as digital signal processors interfacing with host controllers.
For engineers reviewing the IDT7132LA20J datasheet, IDT7132LA20J pinout, IDT7132LA20J application, or IDT7132LA20J equivalent, key selection considerations include its master arbitration capability, open-drain BUSY outputs requiring 270Ω pull-up, industrial temperature range (–40°C to +85°C), 48-pin flatpack package, and compatibility with IDT7142 slave devices for 16-bit+ bus expansion.
Technical Context
The IDT7132LA20J implements true dual-port architecture with fully independent address, control, and I/O buses per port-enabling simultaneous, asynchronous access without internal contention detection unless same-address collision occurs. Its on-chip arbitration logic asserts BUSYL/BUSYR outputs based on chip enable and address timing, not R/W state, and requires tAPS ≥5 ns setup to resolve priority deterministically.
As a low-power (LA) variant, it supports 2V data retention mode with ICCDR ≤1500 µA (commercial grade), enabling battery backup operation. The BUSY outputs are open-drain and must be pulled up externally; BUSY input functionality is exclusive to IDT7142 slaves, confirming IDT7132LA20J's role strictly as a master in MASTER/SLAVE configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port SRAM with full address independence per port |
| Max Read Cycle Time (tRC) | 20 ns - defines minimum interval between successive reads on same port |
| Standby Current (ISB3) | 0.2 mA typ. - ultra-low power consumption when both ports fully disabled with CMOS-level inputs |
| Data Retention Voltage | 2.0 V - enables non-volatile hold mode using backup battery, unique to LA variants |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage | 4.5 V to 5.5 V - TTL-compatible single 5V ±10% rail, no auxiliary supplies required |
| Bus Arbitration | On-chip port-to-port arbitration with BUSY output flag - eliminates need for external logic in conflict resolution |
Pinout & Package
Package: 48-lead flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in, hermetically sealed, MIL-PRF-38535 QML-compliant for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground; decoupling recommended near each pin |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins require local 0.1 µF ceramic bypass |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; drives ISB1/ISB2 current states when high |
| OEL / OER | Output Enable (Left/Right) | Active-low controls I/O drivers; high-impedance state when deasserted |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, low = write; determines direction of data flow on I/O lines |
| BUSYL / BUSYR | Busy Flag Output (Left/Right) | Open-drain outputs requiring 270Ω pull-up; indicate address contention on opposite port |
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address buses; support full 2K addressing independently per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bidirectional 8-bit data buses; high-impedance when OE or CE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves same-address contention autonomously without external logic, reducing BOM count and layout complexity |
| 2V data retention mode | Preserves memory contents during main power loss using backup battery, critical for fault-tolerant systems |
| Master-only BUSY outputs | Open-drain BUSYL/BUSYR signals simplify width-expansion topologies with multiple IDT7142 slaves |
| Industrial temperature rating | Guaranteed operation from –40°C to +85°C enables deployment in harsh environmental conditions |
| Low-power LA design | 0.2 mA full-standby current (ISB3) minimizes quiescent power in always-on embedded subsystems |
Applications
| Digital Signal Processing Buffer | Real-Time Communication Controller |
|---|---|
Use Scenario: Dual-core DSP system where one core writes processed audio samples while the other reads them for playback or encoding. IC Role / Device Role / Timing Role: IDT7132LA20J acts as a zero-wait-state shared buffer with deterministic arbitration, eliminating software synchronization overhead. Use Value: Enables lock-free inter-core data exchange at 50 MHz sustained throughput, leveraging 20 ns tRC and independent port timing. |
Use Scenario: Industrial Ethernet controller managing simultaneous packet reception (RX DMA) and transmission (TX DMA) buffers. IC Role / Device Role / Timing Role: IDT7132LA20J serves as a dual-access FIFO buffer, with one port dedicated to MAC-layer RX and the other to PHY-layer TX. Use Value: Prevents packet loss under burst traffic by allowing concurrent read/write without CPU intervention or external arbitration logic. |
| Redundant Flight Control Memory | Test Equipment Pattern Generator |
Use Scenario: Avionics module requiring mirrored memory access between primary and backup flight computers for integrity checking. IC Role / Device Role / Timing Role: IDT7132LA20J provides synchronized, atomic memory updates via BUSY-controlled write gating during cross-check cycles. Use Value: Ensures bit-identical memory state across redundant channels with hardware-enforced write serialization and 2V retention for safe shutdown. |
Use Scenario: Automated test equipment generating high-speed stimulus patterns while capturing response data in real time. IC Role / Device Role / Timing Role: IDT7132LA20J functions as a pattern memory with one port streaming preloaded vectors and the other capturing DUT responses. Use Value: Achieves >45 MB/s effective bandwidth using 20 ns access and overlapping read/write cycles, eliminating pattern generation bottlenecks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-25JC | 2K × 8, 25 ns access, no built-in arbitration logic; BUSY must be implemented externally | Lacks master/slave arbitration; requires discrete logic for contention management | Select when cost sensitivity outweighs arbitration integration needs and board space allows external logic |
| IDT7142LA20J | Same speed and LA power profile, but SLAVE-only: BUSY pins are inputs, no arbitration logic | Designed exclusively for width expansion with IDT7132; cannot operate standalone as master | Choose only as companion to IDT7132LA20J in 16-bit+ systems; not a functional substitute |
Compared with CY7C133-25JC and IDT7142LA20J, the IDT7132LA20J uniquely integrates arbitration and master BUSY signaling-reducing component count and timing uncertainty in concurrent-access designs-while IDT7142LA20J serves only as a slave extension, and CY7C133-25JC shifts arbitration burden to the system designer.
Availability
IDT7132LA20J is available at Aetrix Electronics and suitable for digital signal processing buffers, real-time communication controllers, redundant flight control memory, test equipment pattern generators, and industrial automation systems requiring stable component supply and long-term obsolescence planning.
Supply support for IDT7132LA20J 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions, acquired by Renesas Electronics in 2019.
The IDT7132/7142 family was designed specifically for high-reliability, real-time embedded systems requiring deterministic dual-port memory access-targeting aerospace, industrial control, and communications infrastructure.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132LA20J?
BUSYL and BUSYR are open-drain output flags indicating address contention on the opposite port. When asserted low, they signal that a simultaneous access to the same memory location has occurred, and the corresponding port's write operation is internally gated. The IDT7132LA20J requires external 270Ω pull-up resistors on both BUSY pins to function correctly.
Does the IDT7132LA20J support battery backup operation?
Yes, the IDT7132LA20J supports battery backup operation with guaranteed data retention at VCC = 2.0 V. In this mode, ICCDR is ≤1500 µA (commercial grade), enabling extended hold time during main power loss. This feature is exclusive to LA variants and is not available on SA versions like IDT7132SA20J.
Can the IDT7132LA20J be used as a standalone dual-port RAM without a slave device?
Yes, the IDT7132LA20J operates fully as a standalone 2K × 8 dual-port SRAM with independent left/right access. Its on-chip arbitration logic and BUSY outputs remain functional even without an IDT7142 slave. The MASTER designation reflects capability-not dependency-and enables optional width expansion when needed.
What package type is used for the IDT7132LA20J?
The IDT7132LA20J is packaged in a 48-lead flatpack (FP48), with dimensions approximately 0.75 in × 0.75 in × 0.11 in. This hermetic package meets MIL-PRF-38535 QML requirements and is rated for industrial temperature operation (–40°C to +85°C).
How does the IDT7132LA20J differ from the IDT7142LA20J?
The IDT7132LA20J is a MASTER device with on-chip arbitration logic and BUSY outputs, while the IDT7142LA20J is a SLAVE device with BUSY inputs and no arbitration circuitry. They share identical speed (20 ns), power profile (LA), and memory size, but cannot substitute for each other: IDT7132LA20J enables autonomous conflict resolution; IDT7142LA20J relies on a master for BUSY control.
7132LA20J 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:
- 20ns
- Access Time:
- 20 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)
7132LA20J FAQ
1.How can I place an order for 7132LA20J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA20J 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 7132LA20J reliable?
The price and inventory of 7132LA20J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA20J is usually 5 days.
3.What payment methods are accepted for 7132LA20J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132LA20J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132LA20J?
7132LA20J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA20J 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 7132LA20J?
For technical support, including 7132LA20J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA20J requirements.
6.How does Aetrix verify that 7132LA20J is sourced from the original manufacturer or authorized distributors?
All 7132LA20J 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 7132LA20J meets industry standards.
7.What is the process for return or replacement of 7132LA20J?
All 7132LA20J units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA20J, 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 7132LA20J part is unused and in its original packaging.
Return procedure for 7132LA20J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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