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Renesas 7132SA55C
- Part No.:
- 7132SA55C
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7132SA55C.pdf
- Description:
- IC SRAM 16KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:4,202
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Product details
Overview
IDT7132SA55C 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 55 ns maximum read/write cycle time. It operates at 5V ±10%, supports independent asynchronous access 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 IDT7132SA55C datasheet, IDT7132SA55C pinout, IDT7132SA55C application, or IDT7132SA55C equivalent, key selection criteria include its 55 ns tRC timing, open-drain BUSY outputs requiring 270 Ω pull-up resistors, industrial temperature range (–40°C to +85°C), and compatibility with 48-pin DIP/LCC/Flatpack packages for legacy board designs.
Technical Context
The IDT7132SA55C implements hardware-based port arbitration using address and chip-enable inputs to assert BUSYL/BUSYR outputs-open-drain signals that stall conflicting writes before data corruption occurs. Its dual independent ports share a single 2K × 8 memory array but maintain separate control, address, and I/O buses.
It features automatic power-down via CE-driven standby modes (ISB1–ISB4), TTL-compatible signaling, and CMOS fabrication enabling typical active power of 325 mW and standby as low as 1 mW (LA variant). The SA suffix denotes standard-power operation without battery backup retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), single monolithic SRAM array |
| Access Time (tAA) | 55 ns max - defines minimum address stability window before valid data appears |
| Read Cycle Time (tRC) | 55 ns max - determines maximum sustained read throughput (18.2 MHz) |
| Write Cycle Time (tWC) | 55 ns max - sets minimum interval between successive write operations |
| Supply Voltage | 4.5 V to 5.5 V - requires stable 5 V ±10% rail; all VCC pins must be connected |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments per datasheet specification |
| Standby Current (ISB1) | 20 mA max (both ports disabled) - enables low-power idle states in burst-access systems |
Pinout & Package
Package: 48-pin plastic DIP (PDG48), 48-pin LCC (LC48), or 48-pin Flatpack (FP48); body dimensions vary by package type per datasheet mechanical drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L | Left port address inputs | 11-bit address bus for left-side memory access (2048 locations) |
| A0R–A10R | Right port address inputs | 11-bit address bus for right-side memory access; fully independent of left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; high-impedance when OE = VIH or CE = VIH |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; isolated from left port I/O lines |
| CEL, CER | Chip enable inputs | Active-low enables respective port; controls power-down entry/exit |
| OEL, OER | Output enable inputs | Active-low enables data drivers; overrides R/W state for read-only access |
| R/WL, R/WR | Read/write direction controls | Active-low = write; high = read; determines I/O driver direction per port |
| BUSYL, BUSYR | Open-drain BUSY flags | Outputs (MASTER only); require external 270 Ω pull-up to VCC per datasheet note |
| VCC, GND | Power supply terminals | All VCC and GND pins must be connected; decoupling recommended per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access without external logic; asserts BUSY before write corruption |
| Independent dual-port architecture | Enables concurrent read/write operations across ports-e.g., CPU writes while DSP reads same memory |
| Open-drain BUSY outputs | Supports wired-OR expansion across multiple MASTER/SLAVE arrays without additional gates |
| 5V TTL-compatible interface | Direct connection to legacy microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Industrial temperature qualification | Validated operation from –40°C to +85°C-suitable for motor drives, PLCs, and outdoor telecom equipment |
Applications
| Real-Time Industrial Controller | Digital Signal Processing Buffer |
|---|---|
Use Scenario: A programmable logic controller (PLC) uses one port for ladder-logic execution and the other for HMI data exchange. IC Role / Device Role / Timing Role: IDT7132SA55C serves as shared memory between CPU and communication coprocessor with deterministic 55 ns latency. Use Value: Eliminates software semaphores and polling overhead by providing hardware arbitration and BUSY stalling. |
Use Scenario: An audio codec system buffers incoming ADC samples on one port while feeding processed PCM data to DAC on the other. IC Role / Device Role / Timing Role: IDT7132SA55C acts as zero-wait-state ping-pong buffer enabling continuous sample streaming at 48 kHz. Use Value: Sustains 18.2 million 8-bit transfers/sec per port-exceeding real-time audio bandwidth requirements. |
| Avionics Data Acquisition | Legacy Test Equipment Memory Expansion |
Use Scenario: Flight data recorder interfaces sensor inputs via one port and stores timestamped records via another port under DO-254 constraints. IC Role / Device Role / Timing Role: IDT7132SA55C provides radiation-tolerant (military-grade option available) dual-access storage with guaranteed tRC ≤ 55 ns. Use Value: Meets avionics timing budgets without FPGA-based arbitration logic, reducing design verification scope. |
Use Scenario: Vintage automated test equipment upgrades memory capacity using existing 48-pin DIP footprints and 5V bus architecture. IC Role / Device Role / Timing Role: IDT7132SA55C replaces obsolete dual-port RAMs in PDG48 sockets with identical pinout and timing behavior. Use Value: Enables drop-in replacement without PCB rework-preserving calibration traceability and NIST compliance. |
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 CY7C133-55JC | 55 ns tRC, 2K × 8, but lacks on-chip arbitration logic and BUSY outputs | Requires external logic for contention resolution; unsuitable for MASTER/SLAVE expansion | Select when arbitration is handled in FPGA or processor firmware |
| IDT7142SA55C | Same speed and organization, but SLAVE-only: BUSY pins are inputs, no arbitration logic | Must be paired with IDT7132SA55C in width-expansion configurations; cannot operate standalone as MASTER | Choose only as companion device in multi-chip 16-bit+ memory systems |
Compared with CY7C133-55JC, IDT7132SA55C delivers hardware-enforced write collision avoidance critical for deterministic real-time systems; compared with IDT7142SA55C, it provides autonomous arbitration capability essential for stand-alone dual-port operation.
Availability
IDT7132SA55C is available at Aetrix Electronics and suitable for real-time industrial controllers, digital signal processing buffers, and avionics data acquisition systems requiring stable component supply across extended product lifecycles.
Supply support for IDT7132SA55C 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, and RF solutions before its acquisition by Renesas Electronics in 2019.
The IDT7132SA55C belongs to IDT's legacy dual-port SRAM product line, engineered for deterministic memory sharing in hard real-time systems where software-managed synchronization introduces unacceptable jitter or latency.
FAQ
What is the maximum operating frequency supported by the IDT7132SA55C?
The IDT7132SA55C supports a maximum read cycle time (tRC) of 55 ns, corresponding to an effective maximum operating frequency of approximately 18.2 MHz for sustained sequential reads. This value is guaranteed across the full industrial temperature range (–40°C to +85°C) and 4.5 V–5.5 V supply voltage, as specified in the AC Electrical Characteristics table for the "X55" speed grade.
Does the IDT7132SA55C require external pull-up resistors on BUSY pins?
Yes, the IDT7132SA55C BUSYL and BUSYR pins are open-drain outputs and require external 270 Ω pull-up resistors to VCC, as explicitly stated in the datasheet notes. Failure to install these resistors will prevent proper BUSY assertion during port contention, risking data corruption in MASTER/SLAVE configurations.
Can the IDT7132SA55C operate as a standalone dual-port RAM without a SLAVE device?
Yes, the IDT7132SA55C functions fully as a standalone 2K × 8 dual-port SRAM with independent left/right port access, on-chip arbitration, and BUSY signaling. Its MASTER capability is optional-used only when expanding data bus width beyond 8 bits with IDT7142 SLAVE devices-but not required for basic dual-port operation.
What is the difference between IDT7132SA55C and IDT7132LA55C?
The IDT7132SA55C uses standard-power CMOS design with typical active current of 325 mW and standby current of 5 mW, while the IDT7132LA55C is a low-power variant offering 1 mW typical standby and 2V data retention capability. Both share identical 55 ns timing, pinout, and functionality-but LA versions add battery backup support not present in the SA variant.
Which packages are available for the IDT7132SA55C?
The IDT7132SA55C is offered in 48-pin plastic DIP (PDG48), 48-pin LCC (LC48), and 48-pin Flatpack (FP48) packages, as confirmed in the Pin Configurations section. All variants maintain identical electrical specifications and pin assignments; mechanical dimensions differ per package type but do not affect functional integration.
7132SA55C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7132SA55C FAQ
1.How can I place an order for 7132SA55C through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA55C 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 7132SA55C reliable?
The price and inventory of 7132SA55C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA55C is usually 5 days.
3.What payment methods are accepted for 7132SA55C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA55C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA55C?
7132SA55C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA55C 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 7132SA55C?
For technical support, including 7132SA55C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA55C requirements.
6.How does Aetrix verify that 7132SA55C is sourced from the original manufacturer or authorized distributors?
All 7132SA55C 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 7132SA55C meets industry standards.
7.What is the process for return or replacement of 7132SA55C?
All 7132SA55C units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA55C, 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 7132SA55C part is unused and in its original packaging.
Return procedure for 7132SA55C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7132SA55C Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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