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Renesas 7132SA20J
- Part No.:
- 7132SA20J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7132SA20J.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,098
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Product details
Overview
7132SA20J 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), 20 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-more memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7132SA20J datasheet, 7132SA20J pinout, 7132SA20J application, or 7132SA20J equivalent, this page delivers verified timing specs, validated master-side BUSY arbitration behavior, confirmed 48-pin flatpack (FP48) package mapping, and direct alternative part comparisons for dual-port SRAM selection in deterministic memory architectures.
Technical Context
The 7132SA20J 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), enabling true asynchronous concurrent access. Its on-chip arbitration logic asserts BUSYL/BUSYR outputs based on address and chip-enable timing-ignoring read/write direction-to resolve port contention.
As a MASTER device, it drives open-drain BUSY signals requiring 270 Ω pull-up resistors; BUSY deassertion precedes valid data by tBDD ≤25 ns (20 ns grade), and write hold after BUSY (tWH) is ≥12 ns. It supports battery backup only in LA variants-not applicable to this SA-grade part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 8 (2048 words × 8 bits), dual-port architecture with fully independent left/right access paths |
| Max Read Cycle Time (tRC) | 20 ns - guarantees minimum 50 MHz sustained read throughput per port under commercial conditions |
| Active Power Consumption | 110 mA typical (ICC) - translates to ~325 mW at 5V, enabling thermal management in dense PCB layouts |
| Standby Current (ISB3) | 1.0 mA typical - full standby mode with CMOS-level inputs, critical for low-power sleep states |
| Operating Voltage | 4.5 V to 5.5 V - strict TTL-compatible 5V ±10% supply requirement; no 3.3V operation supported |
| Temperature Range | –40°C to +85°C - qualified for industrial environments without derating |
| Arbitration Timing (tAPS) | 5 ns minimum setup - ensures deterministic BUSY assertion priority when both ports access same address |
Pinout & Package
7132SA20J is packaged in a 48-lead flatpack (FP48) with 0.75″ × 0.75″ footprint and 0.11″ height, compliant with MIL-PRF-38535 QML for high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 24) | Ground reference | Both pins must be connected to system ground plane; failure causes timing violation or latch-up |
| VCC (Pin 25) | Power supply | Single 5V ±10% supply; all VCC pins require local 0.1 µF ceramic decoupling |
| BUSYL / BUSYR (Pins 12, 23) | Open-drain BUSY flag outputs | Require external 270 Ω pull-up to VCC; indicate port contention-used to stall CPU/DMA writes |
| CEL / CER (Pins 3, 4) | Chip enable inputs | Active-low enables left/right port; VIH ≥2.2 V disables port and triggers ISB1/ISB2 standby modes |
| OEL / OER (Pins 4, 5) | Output enable inputs | Active-low controls I/O drivers; high-Z state during reads prevents bus contention in shared-data systems |
| R/WL / R/WR (Pins 11, 22) | Read/write direction control | High = read, low = write; determines data flow direction on I/O0–I/O7 for each port independently |
| A0L–A10L / A0R–A10R (Pins 6–10, 13–19, 26–30, 32–36) | Address inputs | 11-bit addressing per port; simultaneous match on both sides triggers BUSY arbitration logic |
| I/O0L–I/O7L / I/O0R–I/O7R (Pins 14–21, 31, 37–44) | Bidirectional data I/O | 8-bit parallel interface per port; tri-stated when OE high or CE high to isolate memory banks |
Key Features
| Feature | Design Value |
|---|---|
| On-chip port arbitration logic | Resolves simultaneous same-address access deterministically without external logic-reduces BOM count and layout complexity |
| Open-drain BUSY outputs with defined timing | tBDD ≤25 ns ensures rapid BUSY-to-data validity transition, enabling tight CPU wait-state insertion |
| Master/Slave expandability | Enables seamless 16-bit+ word width systems using IDT7142 SLAVE parts-no glue logic required for error-free expansion |
| TTL-compatible 5V interface | Direct connection to legacy microcontrollers and FPGAs without level-shifting circuitry |
| Industrial temperature qualification | Validated operation from –40°C to +85°C supports deployment in motor drives, PLCs, and avionics edge nodes |
Applications
| Real-Time Motion Control | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Coordinating servo position updates between FPGA motion engine and ARM-based safety monitor via shared memory. IC Role / Device Role / Timing Role: 7132SA20J acts as MASTER dual-port RAM-FPGA writes trajectory data to left port while ARM reads status from right port with sub-20 ns latency. Use Value: On-chip arbitration eliminates race conditions during simultaneous access; 20 ns tRC enables 50 MHz loop update rates without software synchronization overhead. | Use Scenario: Storing intermediate FFT coefficients between two DSP cores operating on overlapping audio frames. IC Role / Device Role / Timing Role: 7132SA20J provides independent left/right I/O paths-Core A writes frame N+1 while Core B reads frame N, synchronized via BUSY handshake. Use Value: Deterministic tBDD ≤25 ns allows precise timing of write-inhibit windows, preventing coefficient corruption during pipeline handoff. |
| Avionics Data Acquisition | Industrial PLC I/O Mapping |
Use Scenario: Capturing sensor telemetry from analog front-end ADCs and making it available to flight control processor without DMA bottlenecks. IC Role / Device Role / Timing Role: 7132SA20J serves as MASTER buffer-ADC controller writes raw samples to left port; flight computer reads processed packets from right port. Use Value: Industrial temp rating (–40°C to +85°C) and MIL-PRF-38535 compliance ensure reliability in uncontrolled cabin environments. | Use Scenario: Sharing I/O state tables between safety PLC and HMI controller in redundant control cabinets. IC Role / Device Role / Timing Role: 7132SA20J operates as MASTER in a multi-SRAM array-BUSYL/BUSYR outputs wired-OR'd to generate system-wide write-stall interrupt. Use Value: Open-drain BUSY outputs simplify wired-OR implementation; 270 Ω pull-up spec ensures predictable rise time across temperature. |
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 tRC, 5V, but lacks on-chip arbitration logic and BUSY outputs-requires external logic for contention resolution | Suitable only in single-master systems where software manages access serialization; not drop-in for hardware-arbitrated designs | Select only if redesigning arbitration into firmware or adding discrete logic; 7132SA20J reduces system-level complexity. |
| IDT7142SA20J | Same speed grade and pinout, but SLAVE-only: BUSY pins are inputs (not outputs), no arbitration logic, no BUSY generation capability | Must be used with 7132SA20J as MASTER; cannot replace 7132SA20J standalone-no functional equivalence | Use exclusively as companion SLAVE in width-expanded arrays; never as a substitute for MASTER functionality. |
Compared with CY7C133-25JC and IDT7142SA20J, the 7132SA20J uniquely integrates hardware arbitration and open-drain BUSY signaling-enabling deterministic, zero-software-overhead dual-port access critical for hard real-time systems.
Availability
7132SA20J is available at Aetrix Electronics and suitable for real-time motion control, digital signal processing buffers, avionics data acquisition, and industrial PLC I/O mapping requiring stable component supply across extended product lifecycles.
Supply support for 7132SA20J 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 product line was designed specifically for deterministic dual-port memory applications requiring hardware-enforced arbitration-targeting real-time control, signal processing, and mission-critical embedded systems.
FAQ
What is the maximum operating frequency supported by the 7132SA20J?
The 7132SA20J supports a maximum read cycle time (tRC) of 20 ns, corresponding to a theoretical maximum sustained access rate of 50 MHz per port. This assumes proper setup/hold timing for address and control signals, TTL-level input transitions, and operation within the industrial temperature range (–40°C to +85°C). The 7132SA20J does not specify a clock frequency-it is an asynchronous SRAM, so timing depends entirely on external signal sequencing.
Does the 7132SA20J support battery backup for data retention?
No, the 7132SA20J does not support battery backup. Battery backup and 2V data retention are exclusive to the LA variant (e.g., 7132LA20J). The "SA" suffix denotes standard power consumption and no data retention capability below 4.5V. For battery-backed operation, the LA version must be selected and properly biased with a 2V source during VCC dropout.
How are the BUSY outputs on the 7132SA20J implemented and what external components are required?
The BUSYL and BUSYR pins on the 7132SA20J are open-drain outputs requiring external 270 Ω pull-up resistors to VCC, as explicitly specified in the datasheet. These signals assert low during port contention to inhibit writes on the contending side. Without the pull-up, BUSY remains floating and arbitration fails. The 270 Ω value ensures correct rise time and noise immunity across temperature and voltage extremes.
Can the 7132SA20J be used as a standalone dual-port RAM without pairing with an IDT7142?
Yes, the 7132SA20J functions fully as a standalone 8-bit dual-port SRAM with independent left/right ports, on-chip arbitration, and BUSY signaling. Its MASTER designation reflects capability-not dependency. Pairing with IDT7142 is optional and only required when expanding data bus width beyond 8 bits (e.g., to 16 or 32 bits) while preserving full-speed concurrent access.
What package type is used for the 7132SA20J and is it RoHS-compliant?
The 7132SA20J uses a 48-lead flatpack (FP48) package measuring 0.75″ × 0.75″ × 0.11″, qualified to MIL-PRF-38535 QML for high-reliability applications. While the provided documentation confirms green parts availability, it does not explicitly state RoHS compliance for this specific FP48 variant. For RoHS assurance, consult IDT's official product change notices or contact Aetrix Electronics for certified material declarations.
7132SA20J 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:
- 20ns
- Access Time:
- 20 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)
7132SA20J FAQ
1.How can I place an order for 7132SA20J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7132SA20J 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 7132SA20J reliable?
The price and inventory of 7132SA20J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7132SA20J is usually 5 days.
3.What payment methods are accepted for 7132SA20J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7132SA20J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7132SA20J?
7132SA20J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7132SA20J 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 7132SA20J?
For technical support, including 7132SA20J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7132SA20J requirements.
6.How does Aetrix verify that 7132SA20J is sourced from the original manufacturer or authorized distributors?
All 7132SA20J 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 7132SA20J meets industry standards.
7.What is the process for return or replacement of 7132SA20J?
All 7132SA20J units undergo pre-shipment inspection (PSI). If there is an issue with 7132SA20J, 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 7132SA20J part is unused and in its original packaging.
Return procedure for 7132SA20J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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