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Renesas 7132LA35JI8
- Part No.:
- 7132LA35JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132LA35JI8.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,195
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Product details
Overview
IDT7132LA35JI8 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, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It is used in real-time embedded systems requiring concurrent memory access, such as radar signal processors and avionics display buffers.
For engineers reviewing the IDT7132LA35JI8 datasheet, IDT7132LA35JI8 pinout, IDT7132LA35JI8 application, or IDT7132LA35JI8 equivalent, key selection considerations include its master-mode arbitration capability, open-drain BUSY outputs requiring 270Ω pull-up, 2V data retention support, 48-pin flatpack package, and compatibility with IDT7142 slave devices for 16-bit+ bus expansion.
Technical Context
The IDT7132LA35JI8 implements hardware-based port arbitration using address and chip-enable inputs to assert BUSYL/BUSYR outputs when simultaneous accesses to identical addresses occur. Its arbitration logic ignores read/write direction and triggers BUSY before write pulse initiation, requiring strict timing compliance (e.g., tAPS ≥5ns) to avoid data corruption.
As a low-power (LA) variant, it draws only 1mW typical standby current and retains data at 2V supply, enabling battery backup without external circuitry. The device uses CMOS technology and provides separate control, address, and I/O pins per port - including dedicated OEL/OER, CEL/CER, R/WL/R/WR, and A0L–A10L/A0R–A10R signals - enabling full-speed, error-free dual-port operation without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port SRAM with independent left/right address/data paths |
| Max Read Cycle Time | 35 ns - defines minimum time between successive reads; enables 28.6 MHz sustained read throughput |
| Standby Current | 1 mA typical - enables ultra-low-power hold mode during system sleep or battery backup |
| Data Retention Voltage | 2.0 V - guarantees nonvolatile data storage using backup battery without refresh circuitry |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications with thermal cycling |
| Supply Voltage | 4.5 V to 5.5 V - TTL-compatible single 5V ±10% rail; all VCC pins must be externally decoupled |
| Package | 48-lead flatpack (FP48) - hermetically sealed, leadless ceramic package with 0.75″ × 0.75″ footprint |
Pinout & Package
Package: 48-lead flatpack (FP48), body dimensions ≈ 0.75 in × 0.75 in × 0.11 in, hermetic ceramic construction suitable for high-reliability industrial and aerospace applications.
| 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 power integrity |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; requires local 0.1 µF ceramic decoupling capacitor per VCC pin |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; drives internal power-down when high (ISB1/ISB3 modes) |
| OEL / OER | Output enable (left/right) | Active-low controls I/O drivers; high-impedance state when deasserted, reducing bus contention |
| R/WL / R/WR | Read/write control (left/right) | Low = write, high = read; determines data flow direction on I/O lines during active cycles |
| BUSYL / BUSYR | BUSY flag (open-drain outputs) | Asserted low during address contention; requires external 270Ω pull-up to VCC per pin |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address buses selecting one of 2048 memory locations per port; no internal latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data paths; high-impedance when CE or OE is inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-based BUSY generation from address/CE match detection eliminates need for external priority encoder or FPGA logic |
| Master-only BUSY outputs | BUSYL/BUSYR are open-drain outputs enabling wired-OR expansion across multiple masters in wide-memory arrays |
| 2V data retention (LA version) | Enables seamless battery backup without external voltage monitoring or switching circuitry |
| Independent port power control | Per-port CE allows selective standby (e.g., left port active while right port consumes only 1mA ISB4) |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting components |
Applications
| Real-Time Radar Signal Processing | Avionics Display Frame Buffer |
|---|---|
|
Use Scenario: Concurrent acquisition of ADC samples on one port while rendering graphics on the other port in airborne radar systems. IC Role / Device Role / Timing Role: MASTER IDT7132LA35JI8 acts as shared memory hub with hardware arbitration preventing write collisions during simultaneous FFT computation and video overlay. Use Value: 35ns access time ensures sub-microsecond latency for time-critical sampling; 2V retention preserves last valid frame during power interruption. |
Use Scenario: Dual-processor cockpit display unit where flight management computer writes telemetry data while graphics processor reads for rendering. IC Role / Device Role / Timing Role: IDT7132LA35JI8 serves as synchronized frame buffer with BUSY signaling to stall writes during pixel fetch cycles. Use Value: Open-drain BUSY outputs interface directly with processor interrupt lines; industrial temp rating ensures reliability across cabin thermal zones. |
| Industrial PLC I/O Mapping Memory | Military Communications Baseband Processor |
|
Use Scenario: Deterministic I/O scan engine updating sensor register maps while control logic reads updated values in cyclic executive. IC Role / Device Role / Timing Role: IDT7132LA35JI8 functions as deterministic shared memory with guaranteed arbitration response (tBAA ≤20ns) for hard real-time scheduling. Use Value: 48-pin flatpack meets MIL-STD-883 vibration/shock requirements; low standby current extends battery life in remote RTU deployments. |
Use Scenario: Secure waveform processing in SDR radios where encryption engine writes cipher blocks while demodulator reads for symbol decoding. IC Role / Device Role / Timing Role: MASTER dual-port RAM provides contention-free memory access between crypto and DSP subsystems under jamming conditions. Use Value: Hermetic FP48 package resists humidity and contaminants in field-deployed radios; 2V retention maintains cryptographic keys during brownout events. |
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 CY7C1371DV33-166BZI | 3.3V core, 166MHz QDR interface, no built-in arbitration or BUSY logic | Requires external sequencer for port coordination; suited for high-bandwidth streaming, not real-time contention resolution | Select when migrating to 3.3V systems and adding external control logic is acceptable |
| IDT7142LA35JI8 | SLAVE-only variant: BUSY pins are inputs (not outputs); no on-chip arbitration logic | Must be paired with IDT7132LA35JI8 in master/slave configuration; cannot operate standalone as memory controller | Choose only as companion device to expand data bus width beyond 8 bits |
Compared with CY7C1371DV33-166BZI and IDT7142LA35JI8, the IDT7132LA35JI8 uniquely integrates arbitration and BUSY signaling in a single 5V industrial-grade package - eliminating external logic while supporting battery-retained operation critical for safety-critical systems.
Availability
IDT7132LA35JI8 is available at Aetrix Electronics and suitable for real-time radar signal processing, avionics display buffering, and industrial PLC I/O mapping requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535-compliant manufacturing.
Supply support for IDT7132LA35JI8 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, later acquired by Renesas Electronics in 2019.
The IDT7132/7142 family was designed specifically for deterministic dual-access memory applications in military, aerospace, and industrial control systems - prioritizing hardware arbitration, low-power retention, and hermetic packaging over density or speed scaling.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132LA35JI8?
BUSYL and BUSYR are open-drain output flags indicating address contention between left and right ports. When both ports attempt access to the same memory location, the IDT7132LA35JI8 asserts the corresponding BUSY pin low to stall the later-arriving access. Each requires a 270Ω pull-up resistor to VCC to function correctly, and they enable hardware-coordinated arbitration without external logic.
Does the IDT7132LA35JI8 support true simultaneous read/write operations?
Yes - the IDT7132LA35JI8 supports fully independent asynchronous read and write operations on left and right ports. However, if both ports access the same address concurrently, on-chip arbitration activates BUSYL/BUSYR to inhibit the second access. Valid simultaneous operations require non-overlapping addresses or proper timing margining per tAPS (≥5ns setup) to avoid BUSY assertion.
Can the IDT7132LA35JI8 operate without external pull-up resistors on BUSY pins?
No - BUSYL and BUSYR are open-drain outputs and will not drive high without external 270Ω pull-up resistors to VCC, as specified in the datasheet. Omitting these resistors results in undefined BUSY logic levels, leading to unreliable arbitration and potential data corruption during contention scenarios.
What is the significance of the 'LA' suffix in IDT7132LA35JI8?
The 'LA' denotes the low-power version with enhanced standby characteristics: 1mW typical standby current (vs. 5mW for SA) and guaranteed 2V data retention. This enables battery-backed operation without auxiliary power management circuitry - a key differentiator for mission-critical systems requiring nonvolatile memory hold during main power loss.
Is the IDT7132LA35JI8 pin-compatible with the IDT7142LA35JI8?
No - although both share the same 48-pin flatpack footprint and signal naming convention, the IDT7132LA35JI8 has BUSYL/BUSYR as outputs (with internal arbitration), while the IDT7142LA35JI8 has them as inputs (requiring external BUSY drive). Swapping them electrically or functionally will cause system failure due to incompatible BUSY logic direction and missing arbitration circuitry.
7132LA35JI8 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:
- 35ns
- Access Time:
- 35 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)
7132LA35JI8 FAQ
1.How can I place an order for 7132LA35JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132LA35JI8 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 7132LA35JI8 reliable?
The price and inventory of 7132LA35JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132LA35JI8 is usually 5 days.
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4.How is shipping managed for 7132LA35JI8?
7132LA35JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132LA35JI8 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 7132LA35JI8?
For technical support, including 7132LA35JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132LA35JI8 requirements.
6.How does Aetrix verify that 7132LA35JI8 is sourced from the original manufacturer or authorized distributors?
All 7132LA35JI8 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 7132LA35JI8 meets industry standards.
7.What is the process for return or replacement of 7132LA35JI8?
All 7132LA35JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7132LA35JI8, 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 7132LA35JI8 part is unused and in its original packaging.
Return procedure for 7132LA35JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132LA35JI8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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