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Renesas 7132SA25JI
- Part No.:
- 7132SA25JI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA25JI.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,509
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Product details
Overview
7132SA25JI 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 industrial temperature support (–40°C to +85°C). It delivers 25 ns max read cycle time, 5V ±10% single-supply operation, and supports width expansion with IDT7142 SLAVE devices in 16-bit+ memory systems.
For engineers reviewing the 7132SA25JI datasheet, 7132SA25JI pinout, 7132SA25JI application, or 7132SA25JI equivalent, this page provides verified timing parameters, BUSY arbitration behavior, industrial-grade DC/AC specs, package-specific pin mapping for FP48 flatpack, and real-world use cases in real-time control and dual-processor interconnects.
Technical Context
The 7132SA25JI implements independent left/right ports with separate address (A0–A10), data (I/O0–I/O7), and control lines (CEL/CER, OEL/OER, R/WL/R/WR, BUSYL/BUSYR). Its on-chip arbitration logic resolves port contention by asserting BUSY outputs when simultaneous accesses target identical addresses - enabling deterministic priority resolution without external logic.
As a MASTER device, it features open-drain BUSY outputs requiring 270Ω pull-up resistors; BUSY signals inhibit writes on the contending port and support cascaded width expansion. The device operates in TTL-compatible 5V CMOS, with active power consumption of 110 mA (typ) and full standby current as low as 1.0 µA (ISB3, LA variant not applicable here).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), fully random-access dual-port SRAM |
| Max Read Cycle Time | 25 ns - guarantees minimum 40 MHz sustained read throughput per port |
| Operating Voltage | 5.0 V ±10% - compatible with legacy 5V TTL/CMOS system rails without level shifting |
| Temperature Range | –40°C to +85°C - qualified for industrial embedded control and avionics subsystems |
| Arbitration Logic | On-chip port-to-port address-matching arbitration with BUSY output assertion - eliminates need for discrete glue logic in multi-processor shared-memory designs |
| Power Consumption | ICC = 110 mA typ (both ports active); ISB3 = 1.0 mA typ (full standby, CMOS inputs) - enables low-idle-power operation in battery-backed or energy-sensitive systems |
| Package | 48-lead flatpack (FP48) - hermetically sealed, MIL-PRF-38535 QML-compliant for high-reliability applications |
Pinout & Package
7132SA25JI is supplied in a 48-pin flatpack (FP48) package with 0.75″ × 0.75″ footprint and 0.11″ height, compliant with MIL-PRF-38535 QML Class V. All VCC pins require connection to 5V supply; all GND pins must be grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Common return path for both ports; multiple pins reduce ground bounce in high-speed switching |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply for entire device; decoupling required within 1 cm |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls power-down mode when high |
| OEL / OER | Output enable (left/right) | Active-low enables I/O drivers; high-Z state when deasserted |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; determines direction of data flow on I/O bus |
| BUSYL / BUSYR | BUSY flag (output only) | Open-drain outputs indicating port contention; require 270Ω pull-up to VCC |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address buses selecting one of 2048 memory locations per port |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | 8-bit parallel data interface per port; driven during write, tri-stated during read unless OE asserted |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access deterministically using tAPS (5 ns setup), eliminating race conditions in dual-CPU shared-memory systems |
| Master-only BUSY outputs | Open-drain BUSYL/BUSYR provide hardware stall signaling to external controllers - enables zero-latency write inhibition without software polling |
| Width expansion support | One 7132SA25JI MASTER can coordinate unlimited IDT7142 SLAVE devices in 16-bit+ word systems, preserving full-speed operation without added logic |
| Industrial temperature grade | Rated –40°C to +85°C with validated AC/DC specs across range - suitable for motor drives, PLCs, and aerospace subsystems |
| Low-power standby modes | ISB3 = 1.0 mA typ (full CMOS standby) and ISB1 = 25 mA typ (TTL-level standby) allow flexible power management in mixed-signal environments |
Applications
| Real-Time Motion Control | Dual-Processor Interconnect |
|---|---|
|
Use Scenario: Coordinating servo axis commands between FPGA-based motion sequencer and ARM-based safety monitor in CNC machine. IC Role / Device Role / Timing Role: 7132SA25JI acts as MASTER shared memory buffer; FPGA writes trajectory data while ARM reads status and injects emergency stop flags. Use Value: 25 ns access ensures sub-µs latency for closed-loop updates; BUSY arbitration prevents overwrites during simultaneous read/write at same address. |
Use Scenario: Enabling cache-coherent communication between two independent DSP cores in radar signal processor. IC Role / Device Role / Timing Role: 7132SA25JI serves as lock-free inter-core mailbox with deterministic arbitration - no software mutex overhead. Use Value: On-chip arbitration eliminates need for external semaphores; FP48 package meets vibration/shock requirements in airborne radar enclosures. |
| Avionics Data Logger | Industrial PLC I/O Mapping |
|
Use Scenario: Buffering sensor telemetry from flight sensors to non-volatile storage in DO-254-certified black box recorder. IC Role / Device Role / Timing Role: 7132SA25JI MASTER interfaces sensor acquisition FPGA (left port) and ARM logging controller (right port) with atomic write/read isolation. Use Value: MIL-PRF-38535 QML qualification ensures radiation tolerance and long-term reliability; 25 ns timing supports 40 MSPS sensor sampling bursts. |
Use Scenario: Synchronizing digital I/O state tables between main PLC CPU and redundant hot-standby controller. IC Role / Device Role / Timing Role: 7132SA25JI provides mirrored memory image accessible by both CPUs; BUSY signals enforce write serialization during failover transitions. Use Value: Industrial temperature rating (–40°C to +85°C) sustains operation in uncooled control cabinets; FP48 hermetic seal prevents moisture ingress in factory environments. |
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, 5V, but lacks on-chip arbitration logic and BUSY outputs - requires external logic for contention resolution | Not suitable for MASTER/SLAVE width expansion; limited to point-to-point dual-processor use without arbitration | Select only if arbitration is handled externally and cost is primary constraint; verify layout accommodates added logic. |
| IDT7142SA25JI | SLAVE counterpart: identical speed/package but BUSY pins are inputs (not outputs); no arbitration logic | Cannot operate standalone as MASTER; must be paired with 7132SA25JI in width-expanded systems | Use only as companion SLAVE in 16-bit+ configurations; never as drop-in replacement for 7132SA25JI's MASTER functionality. |
Compared with CY7C133-25JC, 7132SA25JI integrates arbitration and eliminates external logic; compared with IDT7142SA25JI, it provides essential MASTER functions including BUSY generation and priority resolution - making it irreplaceable in width-expansion topologies.
Availability
7132SA25JI is available at Aetrix Electronics and suitable for real-time motion control, avionics data logging, and industrial PLC I/O mapping requiring stable component supply, long-lifecycle assurance, and MIL-qualified reliability.
Supply support for 7132SA25JI 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-processor shared-memory architectures requiring hardware-enforced arbitration, low-latency access, and ruggedized packaging for mission-critical systems.
FAQ
What is the function of BUSYL and BUSYR on the 7132SA25JI?
BUSYL and BUSYR are open-drain output pins on the 7132SA25JI that assert low when port contention occurs - i.e., when both left and right ports attempt access to the same memory address simultaneously. These signals require 270Ω pull-up resistors to VCC and are used to stall the contending port's write operation. As a MASTER device, 7132SA25JI generates BUSY; SLAVE devices like IDT7142 use BUSY as input.
Can the 7132SA25JI operate in a standalone configuration without a SLAVE device?
Yes, the 7132SA25JI can operate as a standalone 8-bit dual-port SRAM with full functionality - independent left/right read/write access, on-chip arbitration, and BUSY signaling. Its MASTER capability is optional: it is only required when expanding data bus width beyond 8 bits using IDT7142 SLAVE devices. No external logic is needed for basic dual-port operation.
What is the maximum operating frequency supported by the 7132SA25JI?
The 7132SA25JI supports a maximum read cycle time of 25 ns, corresponding to a theoretical maximum sustained access rate of 40 MHz per port. This is validated across the full industrial temperature range (–40°C to +85°C) and under worst-case voltage (4.5 V) and load conditions. Write cycle time is also 25 ns, ensuring symmetrical performance for read/write-intensive applications.
Which package type does the 7132SA25JI use, and is it hermetically sealed?
The 7132SA25JI uses a 48-lead flatpack (FP48) package measuring 0.75″ × 0.75″ × 0.11″. It is hermetically sealed and manufactured in compliance with MIL-PRF-38535 QML Class V, making it suitable for high-reliability applications including aerospace, defense, and industrial environments where moisture resistance and long-term stability are critical.
Does the 7132SA25JI support battery backup or data retention below 5V?
No - the 7132SA25JI is the SA (standard power) variant and does not support battery backup or low-voltage data retention. Only the LA variant (e.g., 7132LA25JI) provides 2V data retention capability. The 7132SA25JI requires continuous 5V ±10% supply for all operations, including standby; removal of VCC results in immediate data loss.
7132SA25JI 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:
- 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)
7132SA25JI FAQ
1.How can I place an order for 7132SA25JI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA25JI 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 7132SA25JI reliable?
The price and inventory of 7132SA25JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA25JI is usually 5 days.
3.What payment methods are accepted for 7132SA25JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA25JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA25JI?
7132SA25JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA25JI 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 7132SA25JI?
For technical support, including 7132SA25JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA25JI requirements.
6.How does Aetrix verify that 7132SA25JI is sourced from the original manufacturer or authorized distributors?
All 7132SA25JI 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 7132SA25JI meets industry standards.
7.What is the process for return or replacement of 7132SA25JI?
All 7132SA25JI units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA25JI, 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 7132SA25JI part is unused and in its original packaging.
Return procedure for 7132SA25JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA25JI Tags
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