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Renesas 7133SA70J
- Part No.:
- 7133SA70J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133SA70J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,021
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Product details
Overview
7133SA70J from IDT is a high-speed 2K × 16 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 70 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and open-drain BUSY output requiring pull-up resistor - used in real-time inter-processor communication and military-grade embedded systems requiring concurrent access without external logic.
For engineers reviewing the 7133SA70J datasheet, 7133SA70J pinout, 7133SA70J application, or 7133SA70J equivalent, this page delivers verified timing specs (tRC = 70 ns), power data (1150 mW active typ.), byte-select write control, battery backup capability (2V retention), and precise 68-pin PLCC package mapping - all confirmed from IDT's official documentation.
Technical Context
The 7133SA70J implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses enabling simultaneous read/write to any memory location. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR flags and gating writes when address matches occur.
As a MASTER device, it features open-drain BUSY outputs (BUSYL, BUSYR) with internal pull-down, while supporting width expansion via SLAVE IDT7143 devices. It operates across military temperature range (–55°C to +125°C) and supports battery backup mode at VCC = 2V with data retention current ≤4000 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768-bit total); enables 16-bit parallel data exchange between two independent systems. |
| Read Cycle Time (tRC) | 70 ns max - defines minimum interval between successive reads; critical for real-time deterministic latency in avionics bus interfaces. |
| Active Power (typ.) | 1150 mW at 5V - determines thermal management requirements in dense military PCB layouts. |
| Standby Power (typ.) | 5 mW - supports low-power sleep modes during CPU idle periods without losing data integrity. |
| Data Retention Voltage | 2.0 V minimum - allows operation from backup battery during main supply failure; validated per MIL-PRF-38535 QML. |
| Operating Temperature | –55°C to +125°C - qualified for airborne and ground vehicle mission-critical environments per military grade spec. |
| Supply Voltage | 4.5 V to 5.5 V - tolerates 10% rail variation; eliminates need for precision LDO in ruggedized power designs. |
Pinout & Package
7133SA70J is packaged in a 68-pin PLCC (PLG68), body size ≈ 0.95 in × 0.95 in × 0.17 in, with dual VCC and GND pins requiring connection to ensure reliable operation per IDT specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port selection; high = standby mode (5 mW), low = active access; enables selective power gating per port. |
| R/WLUB / R/WRUB | Upper Byte Read/Write Enable | Controls upper byte (I/O8–I/O15) of each port separately - essential for mixed-endian or partial-word updates. |
| R/WLLB / R/WRLB | Lower Byte Read/Write Enable | Enables granular 8-bit writes without disturbing adjacent byte; reduces bus traffic in protocol stack buffers. |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O drivers independently; prevents bus contention during multi-master arbitration sequences. |
| BUSYL / BUSYR | Busy Flag (Open Drain Output) | Signals port-level contention; requires external pull-up; used to stall CPUs or trigger interrupt on conflict detection. |
| A0L–A10L / A0R–A10R | Address Inputs (11-bit) | Decodes 2K locations per port; full 11-bit address space enables direct mapping without external address latches. |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (16-bit bidirectional) | Full 16-bit parallel interface per port; supports burst transfers between DSP and host processor without glue logic. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external logic - eliminates race conditions in dual-CPU architectures. |
| Separate byte write controls | Enables atomic 8-bit updates to upper/lower halves - critical for CAN/FlexRay message buffer coherency. |
| Open-drain BUSY outputs | Allows wired-OR of multiple BUSY signals for system-wide conflict detection and centralized interrupt handling. |
| 2V data retention mode | Maintains SRAM contents during brown-out or hot-swap events - meets DO-254 safety-critical data persistence requirements. |
| MIL-PRF-38535 QML compliance | Qualified for Class V (space) and Class B (military) applications - ensures radiation tolerance and long-term reliability in harsh environments. |
Applications
| Avionics Data Bus Interface | Real-Time Control System Memory |
|---|---|
Use Scenario: Dual-processor architecture where flight control computer (FCC) and health monitoring unit (HMU) share sensor fusion data via shared memory. IC Role / Device Role / Timing Role: MASTER 7133SA70J acts as synchronized memory hub with BUSY arbitration preventing write collisions during rapid telemetry updates. Use Value: Eliminates software semaphores and guarantees sub-70 ns memory access determinism required for DO-178C Level A certification. | Use Scenario: Industrial PLC with redundant CPUs exchanging motion control commands and encoder feedback in hard real-time loop. IC Role / Device Role / Timing Role: 7133SA70J provides concurrent read/write access with hardware-enforced priority resolution via BUSY flag. Use Value: Enables 100% deterministic 1 ms control cycle without jitter from software-based locking mechanisms. |
| Tactical Radio Baseband Buffer | Military Vehicle Mission Computer |
Use Scenario: Software-defined radio (SDR) platform where FPGA baseband processor and ARM application processor exchange IQ samples and configuration packets. IC Role / Device Role / Timing Role: 7133SA70J serves as low-latency, radiation-hardened inter-processor buffer with 2V retention during power transitions. Use Value: Supports seamless handover during battery switchover and meets MIL-STD-810G shock/vibe requirements via ceramic PLCC package. | Use Scenario: Armored vehicle command system integrating navigation, comms, and weapon subsystems on separate processors sharing tactical map data. IC Role / Device Role / Timing Role: MASTER 7133SA70J coordinates memory access across three domains using dedicated BUSY signaling per port pair. Use Value: Achieves TEMPEST-compliant isolation while maintaining <100 ns inter-processor latency under –55°C cold-start conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-70AXC | 32K × 16 organization, 70 ns speed, but no built-in BUSY arbitration; requires external logic for contention resolution. | Lacks MASTER/SLAVE expansion capability; unsuitable for width-expanded systems without added gates. | Select only if larger memory depth is prioritized over hardware arbitration and board space is available for discrete logic. |
| IDT7143SA70J | Same 2K × 16 size and 70 ns speed, but SLAVE-only; BUSY pins are inputs, no arbitration logic. | Cannot operate stand-alone as MASTER; must be paired with 7133SA70J for width expansion. | Use exclusively as companion SLAVE in 32-bit+ bus systems; not a functional replacement for 7133SA70J. |
Compared with CY7C028V-70AXC and IDT7143SA70J, the 7133SA70J uniquely integrates on-chip arbitration and open-drain BUSY outputs - enabling drop-in deployment in MIL-PRF-38535-compliant systems without redesigning contention-handling logic or adding discrete components.
Availability
7133SA70J is available at Aetrix Electronics and suitable for avionics data bus interfaces, real-time control system memory, and tactical radio baseband buffers requiring stable component supply across extended product lifecycles and military temperature ranges.
Supply support for 7133SA70J 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 timing, memory, and interface solutions for aerospace, defense, and industrial markets.
The IDT7133/7143 family was designed specifically for deterministic dual-processor communication in safety-critical systems - delivering hardware-arbitrated, low-latency shared memory with military-grade reliability and battery backup capability.
FAQ
What is the maximum operating temperature range for the 7133SA70J?
The 7133SA70J is rated for military temperature range: –55°C to +125°C ambient. This specification is validated per MIL-PRF-38535 QML requirements and applies to all speed grades including the 70 ns version. Operation outside this range may compromise data retention or timing margins.
Does the 7133SA70J require external pull-up resistors on BUSY pins?
Yes, the 7133SA70J BUSYL and BUSYR pins are open-drain outputs and require external pull-up resistors to VCC. Per IDT documentation, this is mandatory to ensure proper logic-high assertion during contention events. Failure to install pull-ups will prevent correct BUSY signaling and lead to undefined arbitration behavior.
Can the 7133SA70J operate from a 2V supply for data retention only?
Yes, the 7133SA70J supports data retention at VCC = 2.0 V minimum, drawing ≤4000 µA (military grade). This mode preserves memory contents during main power loss but does not support active read/write operations - it is strictly a hold state for battery-backed applications.
Is the 7133SA70J pin-compatible with the IDT7143SA70J?
Yes, the 7133SA70J and IDT7143SA70J share identical 68-pin PLCC pinouts per IDT documentation. However, their BUSY pin functions differ: 7133SA70J has BUSY as open-drain output, while IDT7143SA70J uses BUSY as input. Interchangeability is not supported without circuit redesign.
What is the purpose of the separate upper/lower byte write enable pins on the 7133SA70J?
The R/WLUB/R/WLLB (left) and R/WRUB/R/WRLB (right) pins enable independent 8-bit write control per port. This allows atomic updates to either byte lane without affecting the other - essential for protocol stacks where header and payload fields reside in separate bytes and must remain coherent during partial writes.
7133SA70J 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:
- 70ns
- Access Time:
- 70 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)
7133SA70J FAQ
1.How can I place an order for 7133SA70J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA70J 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 7133SA70J reliable?
The price and inventory of 7133SA70J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA70J is usually 5 days.
3.What payment methods are accepted for 7133SA70J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA70J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA70J?
7133SA70J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA70J 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 7133SA70J?
For technical support, including 7133SA70J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA70J requirements.
6.How does Aetrix verify that 7133SA70J is sourced from the original manufacturer or authorized distributors?
All 7133SA70J 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 7133SA70J meets industry standards.
7.What is the process for return or replacement of 7133SA70J?
All 7133SA70J units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA70J, 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 7133SA70J part is unused and in its original packaging.
Return procedure for 7133SA70J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133SA70J Tags
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