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Renesas 7132SA55J
- Part No.:
- 7132SA55J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA55J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,243
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Product details
Overview
IDT7132SA55J 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 industrial temperature range (–40°C to +85°C), and enables error-free 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the IDT7132SA55J datasheet, IDT7132SA55J pinout, IDT7132SA55J application, or IDT7132SA55J equivalent, key selection considerations include its open-drain BUSY output requiring 270Ω pull-up, dual independent port timing (tRC = 55 ns), TTL-compatible I/O, 48-pin flatpack package, and battery-retention capability exclusive to LA variants - making it unsuitable for data retention use cases.
Technical Context
The IDT7132SA55J implements hardware-based port arbitration using address and chip-enable signals to assert BUSYL/BUSYR outputs when concurrent accesses target identical memory locations. Its MASTER-only architecture includes dedicated arbitration logic and open-drain BUSY outputs - unlike SLAVE IDT7142 parts which accept BUSY as input to inhibit writes.
It supports two independent asynchronous access paths: left port (A0L–A10L, I/O0L–I/O7L, CEL/OEL/R/WL) and right port (A0R–A10R, I/O0R–I/O7R, CER/OER/R/WR), each with separate CE-controlled power-down (ISB3 ≤ 1.0 mA full standby). No internal write-enable gating occurs without BUSY assertion - contention resolution is deterministic and timing-driven.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port SRAM with fully independent left/right address/data/control paths |
| Access Time (tAA) | 55 ns max - defines minimum address stability window before valid data appears at outputs |
| Read Cycle Time (tRC) | 55 ns max - sets minimum interval between successive read operations on same port |
| Write Cycle Time (tWC) | 55 ns max - determines shortest allowable time between consecutive write initiations |
| Supply Voltage | 5.0 V ±10% - requires single TTL-compatible rail; no regulation margin needed beyond spec limits |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments; not rated for military (–55°C to +125°C) or commercial (0°C to +70°C) only |
| Standby Current (ISB3) | 1.0 mA typical - achieved when both CE pins > VCC – 0.2 V and all inputs at CMOS levels (full power-down mode) |
Pinout & Package
Package: 48-lead flatpack (FP48), body size ≈ 0.75 in × 0.75 in × 0.11 in; lead finish: solderable; RoHS-compliant green variant available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane; decoupling required within 0.5 inch |
| VCC (Pin 25) | Power supply | Single 5V ±10% source; all VCC pins (only one in FP48) require local 0.1 µF ceramic bypass |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; drives ISB1/ISB2/ISB3 current states based on logic level and input type |
| OEL / OER | Output enable (left/right) | Active-low controls I/O drivers; high-Z state entered when OE = VIH regardless of CE state |
| R/WL / R/WR | Read/write control (left/right) | High = read, low = write; controls direction of I/O bus and internal write gating logic |
| BUSYL / BUSYR | Arbitration status (open-drain) | Outputs LOW during port contention; require external 270Ω pull-up to VCC per datasheet Note 2 |
| A0L–A10L / A0R–A10R | Address inputs (left/right) | 11-bit address buses selecting 2048 locations; used with CE/OE/RW to determine access validity |
| I/O0L–I/O7L / I/O0R–I/O7R | Data I/O (bidirectional, left/right) | 8-bit parallel data paths; driven by internal latches during write, tri-stated during read unless OE active |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous left/right accesses to same address without external logic; asserts BUSY within tBAA ≤ 30 ns |
| Open-drain BUSY outputs | Enable wired-OR expansion across multiple MASTER/SLAVE arrays without additional gates or level shifters |
| Dual independent power-down control | Each port enters low-power ISB2/ISB4 mode when its CE = VIH, reducing total ICC by up to 99% vs active operation |
| TTL-compatible interface | Accepts standard 5V logic thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V); eliminates need for level translators in legacy systems |
| Master-only configuration | Enables scalable memory width expansion: one IDT7132SA55J coordinates arbitration for any number of IDT7142 SLAVE devices |
Applications
| Real-Time Digital Signal Processing | Industrial Motion Control |
|---|---|
Use Scenario: Simultaneous data streaming from ADC (Port A) and DMA-driven waveform generation (Port B) in motor servo loop. IC Role / Device Role / Timing Role: IDT7132SA55J acts as MASTER dual-port buffer enabling zero-latency handoff between acquisition and synthesis engines. Use Value: Deterministic 55 ns tRC ensures sub-microsecond data transfer between processing stages without software arbitration overhead. |
Use Scenario: Coordinated position/velocity feedback capture (Port A) and real-time PID update + PWM command issuance (Port B) in CNC axis controller. IC Role / Device Role / Timing Role: IDT7132SA55J serves as synchronized shared memory between FPGA encoder interface and microcontroller motion engine. Use Value: Hardware BUSY arbitration prevents race conditions during concurrent read-modify-write cycles on shared trajectory tables. |
| Avionics Data Acquisition | Test & Measurement Equipment |
Use Scenario: Redundant sensor fusion where left port ingests ARINC 429 data and right port feeds flight management system via MIL-STD-1553. IC Role / Device Role / Timing Role: IDT7132SA55J functions as MASTER arbiter ensuring atomic updates to health-monitoring registers across dissimilar bus interfaces. Use Value: Industrial temp rating (–40°C to +85°C) and 55 ns timing support deterministic response in certified airborne systems. |
Use Scenario: High-speed digitizer front-end buffering sampled waveforms (Port A) while back-end processor reads completed records (Port B) for FFT analysis. IC Role / Device Role / Timing Role: IDT7132SA55J operates as MASTER dual-port FIFO enabling continuous acquisition at 20 MS/s without dead time. Use Value: 55 ns tRC allows sustained 18.2 MB/s throughput per port - sufficient for 14-bit 10 MS/s sampling with overhead margin. |
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 tRC, 2K × 8, but uses push-pull BUSY outputs and lacks MASTER/SLAVE expansion architecture | Requires external AND logic for multi-device BUSY coordination; no native width-expansion support | Select when system uses only single dual-port device and needs simplified BUSY termination |
| ISSI IS61LV25616AL-10TLI | 10 ns tRC, 256K × 16, asynchronous SRAM - no dual-port or arbitration logic; single-port only | No hardware contention management; software-managed mutual exclusion required | Select when higher density and speed are critical, and real-time arbitration is handled in firmware |
Compared with IDT7132SA55J, CY7C136-55JC offers identical speed but removes MASTER/SLAVE scalability, while IS61LV25616AL-10TLI trades arbitration capability for raw bandwidth and density - neither provides drop-in replacement for BUSY-coordinated multi-device systems.
Availability
IDT7132SA55J is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial motion control, and avionics data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for IDT7132SA55J 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, RF, and power management ICs for communications, computing, and industrial markets.
IDT7132SA55J belongs to the IDT7132/7142 dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between heterogeneous processors, FPGAs, and ASICs in hard real-time systems.
FAQ
What is the function of BUSYL and BUSYR on the IDT7132SA55J?
BUSYL and BUSYR are open-drain arbitration status outputs on the IDT7132SA55J. They drive LOW when the respective port attempts to access the same memory location already being accessed by the opposite port - signaling contention. Each requires a 270Ω pull-up resistor to VCC per datasheet Note 2. The IDT7132SA55J does not allow simultaneous writes to identical addresses; BUSY assertion blocks the later-initiated write.
Does the IDT7132SA55J support battery backup data retention?
No, the IDT7132SA55J does not support battery backup data retention. That feature is exclusive to LA-suffixed variants (e.g., IDT7132LA55J), which guarantee data retention at VCC = 2.0 V. The 'SA' suffix denotes standard active power consumption (325 mW typ.) and excludes the low-leakage process required for 2V retention - confirmed in DC Electrical Characteristics Table 05 and Data Retention Characteristics section.
Can the IDT7132SA55J be used as a SLAVE device in a MASTER/SLAVE configuration?
No, the IDT7132SA55J cannot operate as a SLAVE. It is exclusively a MASTER device with on-chip arbitration logic and BUSY outputs. SLAVE functionality - including BUSY input behavior and absence of arbitration circuitry - is implemented only in IDT7142-series parts (e.g., IDT7142SA55J). Using IDT7132SA55J as SLAVE would result in incorrect BUSY signaling and potential data corruption.
What package type is used for the IDT7132SA55J?
The IDT7132SA55J is packaged in a 48-lead flatpack (FP48), as confirmed in Pin Configurations section and Ordering Information. Its dimensions are approximately 0.75 in × 0.75 in × 0.11 in. This hermetically sealed ceramic package supports industrial temperature operation and provides robust EMI shielding - distinct from DIP, LCC, or PLCC variants offered in the same family.
How does the IDT7132SA55J handle simultaneous read and write operations to the same address?
When both ports attempt access to the same address, the IDT7132SA55J uses on-chip arbitration logic to grant priority based on signal timing - specifically the earlier stable assertion of CE and address. The winning port proceeds; the losing port asserts its BUSY output (BUSYL or BUSYR) and internally gates its write signal. Valid data from the winning port appears after tBDD ≤ 50 ns, per BUSY Timing Table 11b.
7132SA55J 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:
- 55ns
- Access Time:
- 55 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)
7132SA55J FAQ
1.How can I place an order for 7132SA55J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA55J 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 7132SA55J reliable?
The price and inventory of 7132SA55J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA55J is usually 5 days.
3.What payment methods are accepted for 7132SA55J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA55J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA55J?
7132SA55J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA55J 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 7132SA55J?
For technical support, including 7132SA55J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA55J requirements.
6.How does Aetrix verify that 7132SA55J is sourced from the original manufacturer or authorized distributors?
All 7132SA55J 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 7132SA55J meets industry standards.
7.What is the process for return or replacement of 7132SA55J?
All 7132SA55J units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA55J, 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 7132SA55J part is unused and in its original packaging.
Return procedure for 7132SA55J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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