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Renesas 7132SA25JI8
- Part No.:
- 7132SA25JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA25JI8.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,329
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Product details
Overview
7132SA25JI8 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), and 25 ns maximum access time. It operates at 5V ±10%, supports independent asynchronous read/write on left/right ports, and enables 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7132SA25JI8 datasheet, 7132SA25JI8 pinout, 7132SA25JI8 application, or 7132SA25JI8 equivalent, key selection considerations include its industrial temperature range (–40°C to +85°C), 48-pin flatpack package, open-drain BUSY outputs requiring 270Ω pull-up, and master-specific arbitration timing (tBAA ≤ 25 ns, tBDD ≤ 35 ns).
Technical Context
The 7132SA25JI8 implements hardware-based port arbitration using address and chip-enable inputs only-ignoring R/W direction-to assert BUSYL/BUSYR outputs when both ports access the same memory location. Its open-drain BUSY signals require external 270Ω pull-ups and serve as write-inhibit controls for slave devices in width-expanded configurations.
It features two independent TTL-compatible ports with separate CE/OE/R/W controls, address decoders, and I/O drivers. Power management includes four standby modes (ISB1–ISB4) with full-CMOS-level standby current as low as 0.2 mA (typ.) for LA variants-though this part is SA-rated with ISB3 = 1.0 mA (typ.) at VCC = 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8 data lines); supports independent concurrent access per port |
| Access Time | 25 ns max (industrial grade); defines minimum cycle time for reliable read operations |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); single-rail TTL-compatible operation without level translation |
| Operating Temp | –40°C to +85°C; qualified for industrial environments with no derating required |
| BUSY Logic | Open-drain outputs (BUSYL/BUSYR); require 270Ω pull-up resistors to enable port arbitration |
| Power Dissipation | Active: 325 mW typ.; Standby (ISB3): 1.0 mA typ. at CMOS-level inputs - enables low-idle-power system design |
| Package | 48-lead flatpack (FP48); hermetically sealed, 0.75″ × 0.75″ × 0.11″ footprint for high-reliability mounting |
Pinout & Package
7132SA25JI8 is supplied in a 48-pin flatpack (FP48) package with 0.050″ lead pitch, hermetic ceramic construction, and index mark indicating Pin 1 location. All VCC pins must be connected to 5V supply; all GND pins tied to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Common return path for both ports; must be low-impedance connection to avoid noise coupling |
| VCC (Pin 25) | Power supply | Single 5V rail powers entire device; multiple VCC pins not present in FP48 variant |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls power-down mode (ISB1–ISB4) when high |
| 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 initiates write; high enables read; determines data direction on shared I/O lines |
| BUSYL / BUSYR | Arbitration Flag (Open-Drain) | Asserted low when opposite port accesses same address; requires 270Ω pull-up to VCC |
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address buses select one of 2048 locations per port; no internal latching |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data (Left/Right) | 8-bit parallel data paths; direction controlled by R/W and OE; high-Z when disabled |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Hardware-based priority resolution using address/CE timing (tAPS = 5 ns min.) eliminates need for external glue logic |
| Master-only BUSY outputs | Open-drain BUSYL/BUSYR provide direct write-inhibit signaling to IDT7142 slaves without level-shifting |
| Width expansion support | Enables seamless 16-bit+ word systems using one 7132SA25JI8 master + multiple IDT7142 slaves |
| Industrial temperature rating | Guaranteed operation from –40°C to +85°C with no performance degradation or derating |
| TTL-compatible interface | Direct connection to 5V microcontrollers, FPGAs, and ASICs without voltage translation circuitry |
Applications
| Real-Time Digital Signal Processing | Industrial Motion Control |
|---|---|
Use Scenario: Simultaneous data streaming between DSP core and FPGA co-processor in servo drive firmware. IC Role / Device Role / Timing Role: 7132SA25JI8 acts as MASTER dual-port buffer enabling zero-latency handoff of position error vectors and PWM update commands. Use Value: 25 ns access time ensures sub-microsecond inter-processor communication, meeting 100 kHz servo loop timing budgets. | Use Scenario: Coordinating encoder feedback capture and motor command issuance across separate controller domains in CNC machine tools. IC Role / Device Role / Timing Role: 7132SA25JI8 serves as synchronized memory bridge between motion controller (left port) and safety PLC (right port). Use Value: Hardware BUSY arbitration prevents race conditions during simultaneous access to shared trajectory tables, eliminating software locks. |
| Avionics Data Acquisition | Test & Measurement Equipment |
Use Scenario: Buffering sensor telemetry from analog front-end ADCs while concurrently feeding processed results to flight display subsystems. IC Role / Device Role / Timing Role: 7132SA25JI8 functions as MASTER memory node in ARINC-429 compatible data concentrator with deterministic latency. Use Value: Industrial temp rating and hermetic FP48 package ensure reliability under vibration, thermal cycling, and EMI stress in airborne environments. | Use Scenario: High-speed waveform capture in digital storage oscilloscopes where acquisition engine writes samples while display processor reads them. IC Role / Device Role / Timing Role: 7132SA25JI8 provides non-blocking memory access between sampling ASIC (left port) and graphics controller (right port). Use Value: Dual-port architecture eliminates FIFO bottlenecks, enabling continuous 100 MS/s sampling without dead time. |
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 | 5V, 2K × 8, 25 ns, 48-pin PLCC; no built-in BUSY arbitration - requires external logic for conflict detection | Lacks master/slave arbitration; suitable only for simple dual-access buffering without contention handling | Select when system already implements software arbitration or uses discrete logic for BUSY generation |
| IDT7142SA25JI8 | Same speed/package but SLAVE-only; BUSY pins are inputs, no arbitration logic, no BUSY outputs | Designed exclusively for width-expansion as companion to 7132SA25JI8; cannot operate standalone as master | Choose only as paired slave in multi-word systems; never a drop-in replacement for master functionality |
Compared with CY7C133-25JC and IDT7142SA25JI8, the 7132SA25JI8 uniquely integrates arbitration logic and open-drain BUSY outputs-enabling self-contained contention resolution without external components-making it essential for deterministic real-time memory sharing.
Availability
7132SA25JI8 is available at Aetrix Electronics and suitable for industrial motion control, avionics data acquisition, real-time DSP, test equipment, and CNC machine tool applications requiring stable component supply across extended product lifecycles.
Supply support for 7132SA25JI8 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 high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.
The IDT7132/7142 family was designed specifically for deterministic dual-port memory applications requiring hardware-enforced arbitration-targeting real-time control, signal processing, and mission-critical embedded systems.
FAQ
What is the operating temperature range for the 7132SA25JI8?
7132SA25JI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all electrical parameters including access time (25 ns max), standby current, and BUSY arbitration timing. The "I" in the suffix explicitly denotes industrial grade qualification per IDT's ordering nomenclature.
Does the 7132SA25JI8 require external pull-up resistors on BUSY pins?
Yes, the 7132SA25JI8 BUSYL and BUSYR pins are open-drain outputs and require 270Ω pull-up resistors to VCC (5V) as specified in the datasheet. Without these resistors, BUSY signals cannot drive high and arbitration logic fails-potentially causing undetected write collisions in master/slave configurations.
Can the 7132SA25JI8 operate as a standalone dual-port RAM without a slave device?
Yes, the 7132SA25JI8 functions fully as a standalone 2K × 8 dual-port SRAM with independent left/right port access. Its on-chip arbitration logic remains active but only affects internal behavior; BUSY outputs reflect local contention and do not require connection to external slaves unless width expansion is implemented.
What package type does the 7132SA25JI8 use, and what are its mechanical dimensions?
7132SA25JI8 uses a 48-lead flatpack (FP48) package with hermetic ceramic construction. Its body dimensions are 0.75 in × 0.75 in × 0.11 in (19.05 mm × 19.05 mm × 2.79 mm), and it features a 0.050″ lead pitch compatible with standard surface-mount reflow profiles.
How does the 7132SA25JI8 handle simultaneous access to the same memory location?
When both ports attempt access to the same address, the 7132SA25JI8 asserts the corresponding BUSY output (BUSYL or BUSYR) low after tBAA ≤ 25 ns. This signal internally gates the write path on the contending port, preventing data corruption. The winning port proceeds unimpeded, ensuring deterministic arbitration without software intervention.
7132SA25JI8 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7132SA25JI8 FAQ
1.How can I place an order for 7132SA25JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA25JI8 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 7132SA25JI8 reliable?
The price and inventory of 7132SA25JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA25JI8 is usually 5 days.
3.What payment methods are accepted for 7132SA25JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA25JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA25JI8?
7132SA25JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA25JI8 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 7132SA25JI8?
For technical support, including 7132SA25JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA25JI8 requirements.
6.How does Aetrix verify that 7132SA25JI8 is sourced from the original manufacturer or authorized distributors?
All 7132SA25JI8 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 7132SA25JI8 meets industry standards.
7.What is the process for return or replacement of 7132SA25JI8?
All 7132SA25JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA25JI8, 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 7132SA25JI8 part is unused and in its original packaging.
Return procedure for 7132SA25JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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