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Renesas 7132SA55CB
- Part No.:
- 7132SA55CB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7132SA55CB.pdf
- Description:
- IC SRAM 16KBIT PARALLEL SB48
- Quantity:
- Payment:
- Shipping:
Inventory:3,865
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Product details
Overview
IDT7132SA55CB 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 is used in real-time embedded systems requiring concurrent memory access-such as digital signal processors interfacing with host controllers.
For engineers reviewing the IDT7132SA55CB datasheet, IDT7132SA55CB pinout, IDT7132SA55CB application, or IDT7132SA55CB equivalent, key selection considerations include its 55 ns timing grade, open-drain BUSY outputs requiring 270 Ω pull-up resistors, master-only arbitration capability, and compatibility with IDT7142 slave devices for 16-bit+ bus expansion.
Technical Context
The IDT7132SA55CB implements hardware-based port arbitration using address and chip enable signals to detect simultaneous access to identical memory locations, asserting BUSYL/BUSYR outputs to stall conflicting writes. Its dual-port architecture enables full-speed, error-free concurrent reads/writes without external logic when paired with IDT7142 slaves.
It features TTL-compatible I/O, CMOS fabrication for low power (325 mW active, 5 mW standby), and supports battery backup data retention only in LA variants-not applicable to this SA-grade part. The device requires explicit pull-up on BUSY pins and observes strict tAPS (5 ns arbitration priority setup) to guarantee deterministic BUSY assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 8 bits (2048 words × 8-bit wide), enabling compact dual-access buffer storage |
| Access Time | 55 ns max (tAA, tACE, tAOE), defining minimum clock-to-data latency in synchronous interfaces |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with legacy 5V TTL/CMOS system rails |
| Operating Temperature | Commercial grade: 0°C to +70°C, suitable for non-ruggedized industrial control panels |
| Power Consumption | Active: 325 mW typ.; Standby: 5 mW typ., reducing thermal load in always-on modules |
| BUSY Output Type | Open-drain (BUSYL/BUSYR), requiring external 270 Ω pull-up for proper arbitration signaling |
| Package | 48-pin Flatpack (FP48), hermetically sealed for reliability in vibration-prone environments |
Pinout & Package
Package: 48-pin Flatpack (FP48), body dimensions ≈ 0.75 in × 0.75 in × 0.11 in, side-braze construction for thermal and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane for noise immunity and power integrity |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins require local 0.1 µF decoupling |
| CEL / CER (Pins 3, 4) | Chip enable (left/right) | Active-low enables respective port; controls power-down mode when high |
| OEL / OER (Pins 5, 47) | Output enable (left/right) | Active-low enables I/O drivers; high-Z state when deasserted |
| R/WL / R/WR (Pins 6, 46) | Read/write control (left/right) | Low = write, high = read; determines direction of data flow on I/O lines |
| BUSYL / BUSYR (Pins 12, 30) | Arbitration status (left/right) | Open-drain outputs indicating port contention; require 270 Ω pull-up to VCC |
| A0L–A10L / A0R–A10R (Pins 7–11, 31–35, 39–43) | Address inputs (left/right) | 11-bit address buses selecting one of 2048 memory locations per port |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 13–20, 36–38, 44–48) | Data I/O (left/right) | Bidirectional 8-bit data paths; high-impedance when CE or OE inactive |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Hardware-based conflict resolution using address and CE timing-eliminates need for external arbitration logic in master configuration |
| Master-specific BUSY outputs | BUSYL/BUSYR open-drain flags provide deterministic write-inhibit signaling to external controllers or slave devices |
| Dual independent ports | Asynchronous, fully parallel access to same memory array-enables real-time DSP/host co-processing without software synchronization |
| 55 ns high-speed operation | Guaranteed timing across commercial temperature range supports 18.2 MHz sustained memory bandwidth |
| TTL-compatible I/O | Direct interface with legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
Applications
| Real-Time Digital Signal Processing | Industrial Motion Control |
|---|---|
|
Use Scenario: A DSP core and FPGA share real-time sensor data buffers via dual-port RAM to avoid pipeline stalls during motor position updates. IC Role / Device Role / Timing Role: IDT7132SA55CB acts as MASTER memory hub, arbitrating concurrent access while maintaining 55 ns deterministic latency. Use Value: Enables zero-wait-state data exchange between processing domains, eliminating software mutex overhead and jitter in closed-loop timing. |
Use Scenario: PLC CPU and motion controller exchange trajectory parameters and encoder feedback through shared memory in synchronized servo drives. IC Role / Device Role / Timing Role: IDT7132SA55CB provides isolated, atomic read/write paths for time-critical motion commands and status reporting. Use Value: Guarantees data coherency during simultaneous updates-prevents mid-cycle parameter corruption that could cause axis misalignment. |
| Communications Protocol Bridging | Avionics Data Acquisition |
|
Use Scenario: UART-to-SPI bridge firmware uses dual-port RAM to decouple asynchronous serial receive and synchronous peripheral transmit operations. IC Role / Device Role / Timing Role: IDT7132SA55CB serves as elastic buffer with hardware arbitration, absorbing bursty RS-232 traffic while feeding steady SPI frames. Use Value: Absorbs timing mismatches between protocols without DMA or interrupt servicing-reducing CPU load by >40% in resource-constrained MCUs. |
Use Scenario: Flight data recorder captures analog sensor streams via ADC and stores timestamped samples for post-flight analysis. IC Role / Device Role / Timing Role: IDT7132SA55CB functions as high-reliability scratchpad memory with flatpack packaging qualified for avionics vibration profiles. Use Value: Hermetic FP48 package ensures long-term data integrity under thermal cycling and mechanical shock-meeting DO-160 Section 8 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 |
|---|---|---|---|
| Cypress CY7C136-55JC | 55 ns access, 2K × 8, but lacks on-chip arbitration logic and BUSY outputs-requires external logic for contention management | Suitable for simpler dual-access systems where software handles collision avoidance | Select when cost sensitivity outweighs need for hardware arbitration; verify PCB layout accommodates added discrete logic |
| IDT7132LA55CB | Same timing and pinout, but LA variant adds 2V battery backup data retention (100–4000 µA retention current) | Required for systems needing non-volatile memory hold during main power loss (e.g., black box recorders) | Choose IDT7132LA55CB only if battery backup is mandatory; SA version offers lower standby power (5 mW vs. 1 mW typical) |
Compared with IDT7132SA55CB, CY7C136-55JC increases design complexity due to missing arbitration, while IDT7132LA55CB trades higher retention current for data persistence-making the SA variant optimal for cost- and power-sensitive commercial systems without backup requirements.
Availability
IDT7132SA55CB is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial motion control, and communications protocol bridging requiring stable component supply and guaranteed commercial-temperature performance.
Supply support for IDT7132SA55CB 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) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions, acquired by Renesas in 2019.
The IDT7132/7142 family was designed specifically for high-reliability dual-access memory applications in telecommunications infrastructure, industrial automation, and defense electronics-emphasizing deterministic arbitration and seamless bus expansion.
FAQ
What is the maximum operating speed of the IDT7132SA55CB?
The IDT7132SA55CB has a guaranteed maximum read/write cycle time of 55 ns across the commercial temperature range (0°C to +70°C). This corresponds to a theoretical maximum sustained bandwidth of approximately 18.2 MHz. Timing parameters including tAA (address access), tACE (chip enable access), and tAOE (output enable access) are all specified at ≤55 ns, ensuring deterministic performance in synchronous designs.
Does the IDT7132SA55CB support battery backup operation?
No, the IDT7132SA55CB does not support battery backup operation. Battery backup with 2V data retention is exclusive to the LA variant (e.g., IDT7132LA55CB). The SA suffix denotes standard active power characteristics-325 mW typical active power and 5 mW typical standby-with no provision for low-voltage retention circuitry.
How should the BUSY outputs on the IDT7132SA55CB be terminated?
The BUSYL and BUSYR pins on the IDT7132SA55CB are open-drain outputs and must be pulled up to VCC using 270 Ω resistors, as explicitly specified in the datasheet. Failure to apply this termination prevents correct arbitration signaling and may result in undetected write conflicts or unstable BUSY assertion during port contention events.
Can the IDT7132SA55CB be used as a standalone dual-port RAM without a slave device?
Yes, the IDT7132SA55CB can operate as a standalone 8-bit dual-port RAM. Its on-chip arbitration logic and BUSY outputs remain fully functional in single-device configurations, enabling concurrent access from two independent controllers-such as a microcontroller and FPGA-without external logic or timing coordination.
What package type is used for the IDT7132SA55CB?
The IDT7132SA55CB uses a 48-pin Flatpack (FP48) package with hermetic side-braze construction. Its dimensions are approximately 0.75 in × 0.75 in × 0.11 in, offering superior thermal dissipation and mechanical robustness compared to plastic DIP or PLCC variants-making it suitable for demanding commercial and industrial environments.
7132SA55CB 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-SIDE BRAZED
7132SA55CB FAQ
1.How can I place an order for 7132SA55CB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA55CB 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 7132SA55CB reliable?
The price and inventory of 7132SA55CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA55CB is usually 5 days.
3.What payment methods are accepted for 7132SA55CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA55CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA55CB?
7132SA55CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA55CB 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 7132SA55CB?
For technical support, including 7132SA55CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA55CB requirements.
6.How does Aetrix verify that 7132SA55CB is sourced from the original manufacturer or authorized distributors?
All 7132SA55CB 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 7132SA55CB meets industry standards.
7.What is the process for return or replacement of 7132SA55CB?
All 7132SA55CB units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA55CB, 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 7132SA55CB part is unused and in its original packaging.
Return procedure for 7132SA55CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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