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Renesas 7133SA25J
- Part No.:
- 7133SA25J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133SA25J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,048
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Product details
Overview
7133SA25J from IDT (Integrated Device Technology) is a high-speed 2K × 16 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag (open-drain), and separate upper/lower byte write control per port. It operates at 25 ns max access time (industrial temperature range), supports TTL-compatible 5V ±10% supply, and enables 32-bit+ bus expansion when paired with IDT7143 SLAVE devices. It is used in real-time multiprocessing systems requiring concurrent, asynchronous read/write access to shared memory - such as radar signal processors and industrial motion controllers.
For engineers reviewing the 7133SA25J datasheet, 7133SA25J pinout, 7133SA25J application, or 7133SA25J equivalent, this page delivers verified electrical specs, package mapping, functional role in MASTER/SLAVE configurations, BUSY arbitration timing constraints, and validated alternatives for dual-port SRAM selection in deterministic embedded systems.
Technical Context
The 7133SA25J implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses - enabling simultaneous access without internal synchronization overhead. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR outputs, with tBAA ≤ 25 ns and tBDD ≤ 35 ns for address-based arbitration.
It supports battery backup data retention at VCC = 2.0 V (LA variant only), but the SA variant prioritizes speed over ultra-low standby power: active current is 230 mA typ. (both ports), standby current is 25 mA typ. (TTL-level CE high), and it requires external pull-up resistors on open-drain BUSY pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2,048 × 16 bits (2K × 16), dual-port SRAM with independent left/right access paths |
| Access Time (max) | 25 ns - guarantees deterministic read latency for real-time control loops at industrial temperature (–40°C to +85°C) |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; both VCC pins must be connected for reliable function |
| Arbitration Logic | On-chip port-to-port arbitration with BUSY output (IDT7133 only); resolves same-address contention without external logic |
| Power Dissipation | Active: 1150 mW typ.; Standby: 5 mW typ. - optimized for high-throughput, low-latency applications over low-power ones |
| Package | 68-pin PLCC (PLG68) - surface-mount compatible with standard reflow profiles; body size ≈ 0.95″ × 0.95″ × 0.17″ |
| Temperature Range | Industrial: –40°C to +85°C - qualified for factory automation, test equipment, and avionics subsystems |
Pinout & Package
7133SA25J is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC, code PLG68), with dual VCC and GND pins requiring connection for stable operation. Pin 1 is marked; top-view layout follows JEDEC MO-047AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A11R | Address Inputs (Left/Right) | 11-bit address per port; selects one of 2K locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel I/O per port; high-impedance when OE or CE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; controls port power-down mode and memory access gating |
| R/WLUB / R/WRUB R/WLLB / R/WRLB | Upper/Lower Byte Write Enable (Left/Right) | Enables byte-selective writes - critical for mixed-width peripheral interfacing |
| OEL / OER | Output Enable (Left/Right) | Separate output gating per port; allows independent read enable without affecting write path |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention; requires external pull-up; used to stall CPU or DMA on conflict |
| VCC(1), VCC(2) | Power Supply | Two dedicated 5V supply pins - both must be connected to ensure full drive strength and timing compliance |
| GND(1), GND(2) | Ground | Two dedicated ground pins - mandatory for noise immunity and signal integrity in high-speed dual-port operation |
Key Features
| Feature | Design Value |
|---|---|
| MASTER/SLAVE expandability | Enables 32-bit+ word width systems using one 7133SA25J (MASTER) + multiple 7143SA25J (SLAVE); eliminates external arbitration logic |
| Byte-selectable write control | Independent R/WLUB/R/WLLB and R/WRUB/R/WRLB signals allow 8-bit sub-word writes - essential for legacy bus compatibility |
| Hardware contention resolution | On-chip arbitration asserts BUSY within ≤25 ns of address match - prevents data corruption during simultaneous same-address access |
| Asynchronous dual-port operation | No clock required; reads/writes initiated solely by CE/OE/R/W transitions - simplifies timing-critical real-time firmware |
| TTL-compatible interface | Direct connection to 5V microcontrollers, FPGAs, and DSPs without level-shifting; VIH = 2.2 V min, VIL = 0.8 V max |
Applications
| Radar Signal Processing | Industrial Motion Controller |
|---|---|
Use Scenario: Real-time FFT processing pipeline where ADC front-end writes to one port while DSP core reads from the other. IC Role / Device Role / Timing Role: MASTER dual-port SRAM acting as zero-wait-state buffer between acquisition and computation domains. Use Value: 25 ns access time ensures sub-microsecond data handoff; BUSY arbitration prevents race conditions during burst-mode sampling. |
Use Scenario: Coordinated multi-axis servo control where PLC logic writes setpoints to one port while motion ASIC reads and executes trajectories from the other. IC Role / Device Role / Timing Role: Shared memory hub enabling deterministic inter-process communication without OS scheduling latency. Use Value: Independent left/right control enables lock-free updates; byte-write enables partial parameter writes without corrupting adjacent axis data. |
| Avionics Display System | Test Equipment Pattern Memory |
Use Scenario: Cockpit display generator rendering graphics to one port while flight management system updates overlay data on the other. IC Role / Device Role / Timing Role: MASTER device managing contention between safety-critical and non-critical subsystems via BUSY signaling. Use Value: Open-drain BUSY outputs can be wire-OR'd to generate interrupt on any contention event - meeting DO-254 traceability requirements. |
Use Scenario: Automated test system storing stimulus/response patterns; pattern generator writes sequences to one port while comparator reads expected results from the other. IC Role / Device Role / Timing Role: High-reliability dual-port buffer supporting simultaneous pattern load and compare operations at 40 MHz effective throughput. Use Value: 68-pin PLCC package supports long-term availability and reworkability in production test fixtures; industrial temp rating ensures stability across environmental chambers. |
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 CY7C1362AV25 | 3.3V core, 25 ns access, 2K × 16, no built-in arbitration logic; BUSY must be implemented externally | Requires additional logic for contention handling; better suited for 3.3V-only systems with FPGA-based arbitration | Select when migrating to lower-voltage platforms and external arbitration is acceptable |
| IDT7143SA25J | SLAVE counterpart: identical pinout and timing, but BUSY is input-only (no arbitration logic); lower active power (1050 mW typ.) | Used only in width-expanded systems alongside 7133SA25J; cannot operate standalone as MASTER | Select only as companion device in 32-bit+ bus designs; not a functional replacement |
Compared with CY7C1362AV25 and IDT7143SA25J, the 7133SA25J uniquely integrates arbitration logic and open-drain BUSY output - eliminating external components for deterministic contention resolution in industrial and aerospace applications where reliability trumps voltage scaling.
Availability
7133SA25J is available at Aetrix Electronics and suitable for radar signal processing, industrial motion control, avionics display systems, and automated test equipment requiring stable component supply across extended product lifecycles.
Supply support for 7133SA25J 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) was a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions before its acquisition by Renesas Electronics in 2019.
The IDT7133 family was designed specifically for deterministic, real-time multiprocessing systems requiring hardware-enforced memory coherency - targeting defense, industrial automation, and telecom infrastructure markets.
FAQ
What is the operating temperature range for the 7133SA25J?
The 7133SA25J is rated for industrial temperature operation from –40°C to +85°C. This is confirmed in the "Maximum Operating Temperature and Supply Voltage" table, where the Industrial grade specifies ambient temperature limits and 5.0 V ±10% supply. The "25" in the part number denotes 25 ns maximum access time under these conditions.
Does the 7133SA25J include on-chip arbitration logic?
Yes, the 7133SA25J includes on-chip arbitration logic - a defining feature distinguishing it from the SLAVE IDT7143 series. As stated in the Functional Description section, "The IDT7133 is designed to be used as a stand-alone 16-bit Dual-Port RAM or as a 'MASTER' Dual-Port RAM together with the IDT7143 'SLAVE'", and the block diagram explicitly labels arbitration logic as present in IDT7133 only.
How is BUSY functionality implemented on the 7133SA25J?
On the 7133SA25J, BUSYL and BUSYR are open-drain output pins that require external pull-up resistors. They assert low during port contention to indicate that a memory location is being accessed simultaneously - enabling hardware stalling of the contending port. This behavior is documented in Note 1 of the Functional Block Diagram and reinforced in the "Busy Logic" section.
Can the 7133SA25J operate with a 3.3V supply?
No, the 7133SA25J requires a 5.0 V ±10% supply (4.5 V to 5.5 V), as specified in the "Recommended DC Operating Conditions" table. It is TTL-compatible and not designed for 3.3V operation; applying 3.3V would result in non-compliant VIH/VIL levels and unreliable functionality.
What package type is used for the 7133SA25J?
The 7133SA25J uses a 68-pin Plastic Leaded Chip Carrier (PLCC), designated PLG68 in IDT documentation. The physical dimensions are approximately 0.95 inches × 0.95 inches × 0.17 inches, and the pin configuration matches the top-view diagram labeled "7133/43 PLG68(4)" in the datasheet.
7133SA25J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 32Kbit
- Memory Organization:
- 2K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-PLCC (24.21x24.21)
7133SA25J FAQ
1.How can I place an order for 7133SA25J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA25J 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 7133SA25J reliable?
The price and inventory of 7133SA25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA25J is usually 5 days.
3.What payment methods are accepted for 7133SA25J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA25J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA25J?
7133SA25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA25J 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 7133SA25J?
For technical support, including 7133SA25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA25J requirements.
6.How does Aetrix verify that 7133SA25J is sourced from the original manufacturer or authorized distributors?
All 7133SA25J 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 7133SA25J meets industry standards.
7.What is the process for return or replacement of 7133SA25J?
All 7133SA25J units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA25J, 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 7133SA25J part is unused and in its original packaging.
Return procedure for 7133SA25J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA25J Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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