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Renesas 7132SA35JI8
- Part No.:
- 7132SA35JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA35JI8.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,095
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Product details
Overview
7132SA35JI8 from IDT is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag (open-drain), 35 ns max read cycle time, TTL-compatible 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables full-speed 16-bit-or-more memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7132SA35JI8 datasheet, 7132SA35JI8 pinout, 7132SA35JI8 application, or 7132SA35JI8 equivalent, key selection considerations include BUSY arbitration timing (tBAA ≤ 35 ns), dual-port asynchronous access capability, open-drain BUSY pull-up requirement (270 Ω), industrial-grade reliability, and compatibility with 48-pin flatpack (FP48) packaging.
Technical Context
The 7132SA35JI8 implements hardware-based port arbitration using address and chip-enable inputs only-ignoring R/W direction-to assert BUSYL/BUSYR outputs when concurrent accesses target identical addresses. Its open-drain BUSY outputs require external 270 Ω pull-up resistors per pin and directly inhibit writes on the contending port.
It supports two independent asynchronous ports (left/right), each with dedicated CE, OE, R/W, A0–A10, and I/O0–I/O7 signals. Power management includes four standby current modes (ISB1–ISB4), with full CMOS-level standby drawing ≤1.0 mA (SA) or ≤0.2 mA (LA) at VCC = 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port SRAM with fully independent left/right address/data/control paths |
| Access Time (tRC) | 35 ns max - defines minimum read cycle interval; determines maximum sustained throughput in real-time buffer applications |
| Operating Voltage | 5.0 V ±10% - single TTL-compatible supply; no level-shifting required for 5V microcontroller interfaces |
| Temperature Range | –40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
| BUSY Logic | Open-drain output (BUSYL/BUSYR); requires 270 Ω pull-up; asserts during address-contention to stall write operations |
| Standby Current (ISB3) | 1.0 mA (typ.) - full CMOS-level standby with both CEs > VCC − 0.2 V; enables ultra-low-power hold mode |
| Package | 48-pin flatpack (FP48) - hermetically sealed, leadless ceramic package rated for high-reliability industrial use |
Pinout & Package
48-pin flatpack (FP48) package: 0.75″ × 0.75″ × 0.11″ body size, side-brazed ceramic construction, hermetic seal, compatible with wave soldering and MIL-PRF-38535 QML Class V processing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane; decoupling capacitors recommended near Pin 1 |
| VCC (Pin 25) | Power supply | 5.0 V ±10% supply; all VCC pins must be tied together and bypassed with 0.1 µF ceramic capacitor |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls power-down state (ISB1–ISB4) and arbitration input |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-impedance state when deasserted; affects tHZ/tLZ timing |
| R/WL / R/WR | Read/write control (left/right) | Active-low write; high = read; used with CE/OE to determine port function per Truth Table I |
| BUSYL / BUSYR | Arbitration status (output) | Open-drain BUSY flags; require 270 Ω pull-up to VCC; low = write inhibited due to address contention |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address bus per port; decoded internally to access 2K locations; critical for tAA/tBAA timing |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (left/right) | Bidirectional 8-bit data bus per port; high-impedance when CE=VIH or OE=VIH; driven by internal latches |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-based, address- and CE-driven BUSY assertion eliminates need for external glue logic in multi-port systems |
| Master/Slave expandability | Single 7132SA35JI8 MASTER coordinates any number of 7142 SLAVE devices for seamless 16+ bit word-width expansion |
| Industrial temperature operation | –40°C to +85°C ambient rating ensures reliable operation in factory automation, power electronics, and transportation control units |
| Low-power standby modes | Four distinct ISB states support hierarchical power gating: ISB3 (≤1.0 mA) enables battery-backed retention in LA variants |
| TTL-compatible interface | Direct connection to 5V microcontrollers, FPGAs, and ASICs without level shifters; VIH = 2.2 V min, VIL = 0.8 V max |
Applications
| Real-Time Data Buffering | Dual-Processor Communication |
|---|---|
Use Scenario: High-speed bidirectional data exchange between two independent processors sharing a common memory space without software coordination. IC Role / Device Role / Timing Role: 7132SA35JI8 acts as MASTER arbiter, resolving simultaneous access conflicts via hardware BUSY signaling with tBDD ≤ 35 ns latency. Use Value: Eliminates race conditions and software locks; enables deterministic sub-µs inter-processor messaging in avionics and robotics. | Use Scenario: Synchronized sensor acquisition and control loop execution across separate CPU domains in industrial PLCs. IC Role / Device Role / Timing Role: 7132SA35JI8 provides isolated, asynchronous read/write ports with 35 ns access-matching servo update rates. Use Value: Enables lock-free, cycle-accurate data handoff between motion controller and safety monitor subsystems. |
| Motor Drive Control Memory | Legacy System Memory Upgrade |
Use Scenario: Storing PWM lookup tables and real-time position feedback buffers in brushless DC motor inverters. IC Role / Device Role / Timing Role: 7132SA35JI8 serves as dual-access scratchpad: one port for DSP updates, other for FPGA waveform generation. Use Value: Sustains 28.6 MHz effective bandwidth (1/35 ns) for jitter-free commutation timing in 20 kHz switching drives. | Use Scenario: Replacing obsolete dual-port RAMs in military comms equipment requiring MIL-PRF-38535 qualification. IC Role / Device Role / Timing Role: 7132SA35JI8 delivers drop-in FP48 footprint compatibility and guaranteed –40°C to +85°C operation. Use Value: Extends service life of fielded systems without PCB redesign; meets QML Class V screening requirements. |
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 | 35 ns access, 2K × 8, but lacks on-chip arbitration logic and BUSY outputs; requires external logic for contention resolution | Suitable for simpler dual-port systems where software-managed access or external arbitration is acceptable | Select when cost sensitivity outweighs need for hardware arbitration; verify external logic fits timing budget (tAPS = 5 ns) |
| IDT7142SA35JI8 | Same speed and package, but SLAVE-only: BUSY pins are inputs (not outputs); no arbitration logic; designed exclusively for width expansion with 7132 | Used only as companion device in MASTER/SLAVE configurations-not standalone replacement | Choose only when building 16-bit+ memory arrays; cannot substitute for 7132SA35JI8's MASTER functionality |
Compared with CY7C133-35JC and IDT7142SA35JI8, the 7132SA35JI8 uniquely integrates arbitration logic and open-drain BUSY outputs-enabling true hardware-coordinated dual-port operation without external components, while IDT7142SA35JI8 serves only as a slave extension and CY7C133-35JC shifts arbitration burden to system design.
Availability
7132SA35JI8 is available at Aetrix Electronics and suitable for industrial motor control, real-time embedded communications, and military-grade data buffering requiring stable component supply, long-term lifecycle support, and QML-compliant sourcing.
Supply support for 7132SA35JI8 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
IDT (Integrated Device Technology) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics.
The IDT7132/7142 product line was designed specifically for deterministic, contention-free dual-processor memory sharing in industrial automation, aerospace, and telecommunications infrastructure.
FAQ
What is the function of the BUSY pins on the 7132SA35JI8?
The BUSYL and BUSYR pins on the 7132SA35JI8 are open-drain arbitration outputs that go low when address contention occurs between ports. They require 270 Ω pull-up resistors to VCC and directly inhibit writes on the contending port. This hardware mechanism prevents data corruption without software intervention-critical for real-time determinism in the 7132SA35JI8.
Can the 7132SA35JI8 operate in battery backup mode?
No-the 7132SA35JI8 is the SA (standard power) variant and does not support battery backup. Only LA versions (e.g., 7132LA35JI8) guarantee 2.0 V data retention. The 7132SA35JI8 draws 1.0 mA typical in full standby (ISB3) but lacks the low-leakage design needed for extended VCC < 4.5 V operation.
Which package type does the 7132SA35JI8 use, and what are its mechanical dimensions?
The 7132SA35JI8 uses a 48-pin flatpack (FP48) package: hermetically sealed ceramic body measuring 0.75 in × 0.75 in × 0.11 in. It complies with MIL-PRF-38535 QML Class V and is qualified for industrial temperature operation (–40°C to +85°C).
How does the 7132SA35JI8 differ from the 7142SA35JI8 in system architecture?
The 7132SA35JI8 is a MASTER device with on-chip arbitration logic and BUSY outputs, while the 7142SA35JI8 is a SLAVE with BUSY inputs and no arbitration circuitry. In a width-expanded system, only one 7132SA35JI8 coordinates multiple 7142SA35JI8 units-7142SA35JI8 cannot operate standalone as a MASTER or replace the 7132SA35JI8.
What are the key timing parameters governing arbitration in the 7132SA35JI8?
Key arbitration timing parameters for the 7132SA35JI8 include tBAA (BUSY access time from address, ≤35 ns), tBAC (from CE, ≤35 ns), tAPS (priority setup, 5 ns min), and tBDD (BUSY disable to valid data, ≤35 ns). These ensure deterministic resolution of simultaneous accesses-essential for meeting real-time deadlines in the 7132SA35JI8.
7132SA35JI8 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)
7132SA35JI8 FAQ
1.How can I place an order for 7132SA35JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA35JI8 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 7132SA35JI8 reliable?
The price and inventory of 7132SA35JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA35JI8 is usually 5 days.
3.What payment methods are accepted for 7132SA35JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA35JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA35JI8?
7132SA35JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA35JI8 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 7132SA35JI8?
For technical support, including 7132SA35JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA35JI8 requirements.
6.How does Aetrix verify that 7132SA35JI8 is sourced from the original manufacturer or authorized distributors?
All 7132SA35JI8 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 7132SA35JI8 meets industry standards.
7.What is the process for return or replacement of 7132SA35JI8?
All 7132SA35JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA35JI8, 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 7132SA35JI8 part is unused and in its original packaging.
Return procedure for 7132SA35JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA35JI8 Tags
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