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Renesas 7132SA35J
- Part No.:
- 7132SA35J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA35J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,773
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Product details
Overview
7132SA35J 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-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7132SA35J datasheet, 7132SA35J pinout, 7132SA35J application, or 7132SA35J equivalent, key selection criteria include BUSY arbitration timing (tBAA ≤ 35 ns), dual-port asynchronous access capability, low-power standby current (ISB3 = 0.2 mA typ.), and compatibility with 48-pin flatpack, LCC, or DIP packages.
Technical Context
The 7132SA35J implements independent left/right port control with separate CE, OE, R/W, address, and I/O lines-enabling true concurrent read/write operations. Its on-chip arbitration logic monitors address and chip enable signals (not R/W state) to assert BUSY outputs when contention occurs on identical addresses.
As a MASTER-only device, it features open-drain BUSYL/BUSYR outputs requiring 270 Ω pull-up resistors, supports battery backup data retention only in LA variants (not applicable here), and delivers 325 mW typical active power at 35 ns speed grade under commercial/industrial conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port asynchronous SRAM |
| Access Time | 35 ns max read cycle time - guarantees deterministic latency for real-time interrupt handlers |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL and 5V microcontroller buses |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments |
| Standby Current | 0.2 mA typical (ISB3, full CMOS standby) - enables low-power sleep modes |
| BUSY Logic | Open-drain BUSYL/BUSYR outputs - requires external 270 Ω pull-ups for master-side contention signaling |
| Power Dissipation | 325 mW typical active power - manageable thermal profile without forced cooling |
Pinout & Package
7132SA35J is available in 48-pin flatpack (FP48), 48-pin LCC (LC48), and 48-pin DIP (PDG48/SB48) packages. Pin functions are identical across these packages per IDT documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low port selection; controls power-down mode when high |
| OEL / OER | Output Enable (Left/Right) | Active-low tri-state control for I/O pins during reads |
| R/WL / R/WR | Read/Write Control (Left/Right) | High = read, low = write; determines data direction per port |
| BUSYL / BUSYR | BUSY Flag (Left/Right) | Open-drain outputs indicating address contention; require 270 Ω pull-ups |
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address bus per port (2048 locations) |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (Left/Right) | Bi-directional 8-bit data bus per port; high-impedance when disabled |
| VCC / GND | Power Supply | All VCC pins must be connected to 5V; all GND pins tied to ground plane |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Enables automatic port contention resolution without external logic, reducing BOM count and PCB area |
| Dual independent ports | Allows simultaneous CPU and DMA access to shared memory - critical for real-time motion control buffers |
| 35 ns access time | Supports tight timing margins in 20 MHz bus systems with no wait states |
| TTL-compatible I/O | Direct interface with legacy 5V microcontrollers (e.g., Intel 80C188, Motorola 68HC11) without level shifters |
| Low standby power | 0.2 mA full CMOS standby current enables energy-efficient idle modes in battery-backed systems |
Applications
| Industrial Motion Controller | Avionics Data Buffer |
|---|---|
Use Scenario: Real-time servo loop coordination between FPGA-based position generator and DSP-based current controller sharing trajectory data. IC Role / Device Role / Timing Role: MASTER dual-port RAM provides synchronized access to shared command tables; BUSY signals stall conflicting writes to prevent corrupted setpoints. Use Value: Eliminates software arbitration overhead and guarantees atomic updates to 2K × 8 parameter space with ≤35 ns deterministic latency. | Use Scenario: Buffered exchange of sensor fusion results between flight management computer (FMC) and inertial reference unit (IRU) over discrete parallel bus. IC Role / Device Role / Timing Role: Dual-port interface acts as time-deterministic handshake buffer; left port serves FMC, right port serves IRU with independent clock domains. Use Value: Enables lock-free data transfer without CPU intervention, meeting DO-254 Level A timing assurance requirements. |
| Medical Imaging Pipeline | Test Equipment Pattern Memory |
Use Scenario: Storing pixel line buffers during real-time ultrasound beamforming where ADC front-end and DSP back-end operate asynchronously. IC Role / Device Role / Timing Role: MASTER RAM accepts raw ADC samples on one port while DSP reads processed lines on the other; BUSY prevents overwrites during burst transfers. Use Value: Sustains 35 ns throughput across 8-bit parallel interface, supporting >28 MB/s sustained bandwidth for 12-bit equivalent data paths. | Use Scenario: Storing stimulus/response patterns in automated test equipment (ATE) where pattern generator and comparator run at different rates. IC Role / Device Role / Timing Role: Dual-port SRAM decouples pattern sequencer (left port) from pass/fail analyzer (right port); arbitration ensures consistent vector replay. Use Value: Guarantees glitch-free pattern delivery at 28.6 MHz (35 ns cycle), eliminating false failures due to memory contention. |
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 glue logic for contention handling | Suitable for simpler dual-access systems without real-time arbitration needs | Select when system-level arbitration is implemented in FPGA or software, and board space permits external logic |
| IDT7142SA35J | Same speed grade and pinout, but SLAVE-only: BUSY pins are inputs (not outputs), no arbitration logic, no BUSY generation capability | Used only in width-expansion configurations paired with 7132SA35J as MASTER | Required only as companion SLAVE in 16-bit+ memory systems; not functionally substitutable for 7132SA35J |
Compared with CY7C133-35JC, 7132SA35J integrates arbitration hardware to eliminate external components and reduce timing uncertainty; compared with IDT7142SA35J, it provides essential MASTER functionality including BUSY flag generation and priority resolution - making it irreplaceable in standalone dual-port or MASTER/SLAVE topologies.
Availability
7132SA35J is available at Aetrix Electronics and suitable for industrial motion controllers, avionics data buffers, medical imaging pipelines, test equipment pattern memory, and real-time embedded systems requiring stable component supply with guaranteed long-term sourcing.
Supply support for 7132SA35J 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 signal processing solutions, now part of Renesas Electronics.
The IDT7132/7142 product line was designed for deterministic, contention-free dual-port memory access in real-time embedded systems requiring hardware-managed arbitration - particularly in industrial automation, aerospace, and medical instrumentation.
FAQ
What is the maximum operating temperature range for the 7132SA35J?
The 7132SA35J is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table of the official IDT datasheet (Rev. May 27, 2021), and applies specifically to the SA speed grade in 48-pin packages. It does not support military-grade –55°C to +125°C operation, which is reserved for MIL-PRF-38535 QML-compliant variants.
Does the 7132SA35J support battery backup data retention?
No, the 7132SA35J does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7132LA35J), which specifies 2V data retention capability. The "SA" suffix denotes standard active power characteristics (325 mW typical), and the datasheet explicitly limits battery backup to LA versions only - confirmed in the "Data Retention Characteristics (LA Version Only)" section.
How should the BUSY pins be connected on the 7132SA35J?
The BUSYL and BUSYR pins on the 7132SA35J are open-drain outputs and must be pulled up to VCC using 270 Ω resistors, as specified in Note 1 of the datasheet's Features section and Figure 3 ("BUSY AC Output Test Load"). Failure to install these pull-ups will prevent proper BUSY assertion during address contention, leading to undetected write collisions and memory corruption.
Can the 7132SA35J be used as a standalone dual-port RAM without a SLAVE device?
Yes, the 7132SA35J can operate as a standalone 8-bit dual-port RAM. Its datasheet states it is "designed to be used as a stand-alone 8-bit Dual-Port RAM or as a 'MASTER' Dual-Port RAM together with the IDT7142 'SLAVE'." All control, address, and I/O functions are fully operational independently - no SLAVE device is required unless expanding data bus width beyond 8 bits.
What package types are available for the 7132SA35J?
The 7132SA35J is available in three 48-pin packages: flatpack (FP48), leadless ceramic chip carrier (LC48), and dual in-line package (PDG48 or SB48). These are explicitly listed in the "Features" section and confirmed in the "Pin Configurations" diagrams (pages 2–3). The 52-pin PLCC variant applies only to IDT7132/7142 devices with different speed/package codes, not the 7132SA35J.
7132SA35J 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:
- 35ns
- Access Time:
- 35 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)
7132SA35J FAQ
1.How can I place an order for 7132SA35J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA35J 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 7132SA35J reliable?
The price and inventory of 7132SA35J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA35J is usually 5 days.
3.What payment methods are accepted for 7132SA35J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA35J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA35J?
7132SA35J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA35J 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 7132SA35J?
For technical support, including 7132SA35J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA35J requirements.
6.How does Aetrix verify that 7132SA35J is sourced from the original manufacturer or authorized distributors?
All 7132SA35J 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 7132SA35J meets industry standards.
7.What is the process for return or replacement of 7132SA35J?
All 7132SA35J units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA35J, 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 7132SA35J part is unused and in its original packaging.
Return procedure for 7132SA35J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA35J Tags
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