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Renesas 7133SA35PFG8
- Part No.:
- 7133SA35PFG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133SA35PFG8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
7133SA35PFG8 from IDT is a high-speed 2K × 16 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, 35 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables error-free 32-bit-or-wider memory expansion when paired with IDT7143 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7133SA35PFG8 datasheet, 7133SA35PFG8 pinout, 7133SA35PFG8 application, or 7133SA35PFG8 equivalent, key selection criteria include BUSY arbitration timing (tBAA ≤ 30 ns), byte-selectable write control per port, dual independent asynchronous access, and battery backup data retention capability at 2V (LA variant only).
Technical Context
The 7133SA35PFG8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left and right ports. Its on-chip arbitration logic resolves simultaneous access contention by asserting BUSYL/BUSYR open-drain output flags, requiring external pull-up resistors.
It supports MASTER-only features including BUSY output generation, automatic port priority resolution via tAPS (5 ns setup), and hardware write inhibition during contention - distinguishing it from SLAVE-only IDT7143 variants where BUSY is input-only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total, organized as two independent 2048-word × 16-bit ports) |
| Access Time | 35 ns max read cycle time - defines minimum clock period for synchronous interface or maximum bus turnaround in real-time systems |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL logic families without level translation |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including motor drives and PLCs |
| Power Dissipation | Active: 1150 mW typ., Standby: 5 mW typ. - enables low-power idle modes in battery-backed systems |
| Bus Width Control | Separate R/WLUB/R/WLLB and R/WRUB/R/WRLB - allows independent upper/lower byte writes per port |
| BUSY Logic | Open-drain BUSYL/BUSYR outputs with tBAA ≤ 30 ns - provides hardware arbitration signaling for multi-CPU coherency |
Pinout & Package
7133SA35PFG8 is packaged in a 68-pin PLCC (Plastic Leaded Chip Carrier) with body dimensions approximately 0.95 in × 0.95 in × 0.17 in. Both VCC pins must be connected to 5V supply and both GND pins to ground for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A11R | Address Inputs (Left/Right Port) | 11-bit address bus per port selects one of 2048 memory locations |
| I/O0L–I/O15L / I/O0R–I/O15R | Bi-directional Data I/O | 16-bit parallel data path per port; high-impedance when CE or OE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable for respective port; controls power-down mode when HIGH |
| R/WLUB / R/WRUB R/WLLB / R/WRLB | Byte Write Enable (Upper/Lower) | Independent write gating per byte - enables partial-word updates without read-modify-write |
| OEL / OER | Output Enable (Left/Right) | Active-low control for data output drivers; decouples read data from bus timing |
| BUSYL / BUSYR | Busy Flag (Output) | Open-drain signals indicating port contention; require external pull-up resistors |
| VCC (×2) / GND (×2) | Power & Ground | Dual VCC/GND pairs reduce switching noise and improve signal integrity in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access between ports without external logic, preventing data corruption |
| MASTER/SLAVE expandability | Enables seamless 32-bit+ word width systems using one 7133SA35PFG8 MASTER and multiple IDT7143 SLAVEs |
| Byte-selectable write control | Allows independent update of upper or lower byte per port - critical for mixed-endian or packed-data protocols |
| Asynchronous dual-port operation | Eliminates clock domain crossing constraints; supports independent CPU, DSP, or FPGA interfaces |
| Battery backup data retention | Retains valid data at VCC = 2V - supports non-volatile operation during brown-out or controlled shutdown |
Applications
| Industrial Motion Controller | Real-Time DSP Interface |
|---|---|
Use Scenario: Two independent processors (PLC CPU and motion sequencer) share sensor feedback and trajectory data in a closed-loop servo system. IC Role / Device Role / Timing Role: 7133SA35PFG8 acts as MASTER dual-port RAM providing synchronized, contention-free memory access with hardware BUSY arbitration. Use Value: Eliminates software semaphores and reduces inter-processor latency to ≤35 ns, enabling sub-millisecond motion loop execution. | Use Scenario: A host microcontroller streams configuration parameters to a TI C6000 DSP while the DSP writes processed results back concurrently. IC Role / Device Role / Timing Role: 7133SA35PFG8 serves as buffer memory with independent left/right ports mapped to MCU and DSP data buses. Use Value: Enables full-duplex data exchange without DMA stalls or polling overhead, sustaining 28.6 MB/s aggregate bandwidth (1/35 ns × 16 bits). |
| Avionics Data Logger | Redundant Communication Gateway |
Use Scenario: Dual-redundant flight computers log telemetry to shared memory while maintaining independence during fault conditions. IC Role / Device Role / Timing Role: 7133SA35PFG8 operates as MASTER with BUSY logic disabled via external pull-up, allowing deterministic failover handshaking. Use Value: Guarantees atomic write completion and eliminates race conditions during hot-swap or reset events across redundant channels. | Use Scenario: CAN and Ethernet subsystems exchange protocol-converted messages through a safety-critical gateway with lock-step verification. IC Role / Device Role / Timing Role: 7133SA35PFG8 provides dual-port scratchpad memory where one port handles CAN frame assembly and the other manages Ethernet packet buffering. Use Value: Supports concurrent 1 Mbps CAN FD and 100 Mbps Ethernet traffic with zero-cycle inter-port synchronization via BUSY flag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-35PC | 35 ns access, 2K × 16, but no built-in BUSY arbitration logic; requires external logic for contention management | Suitable for simpler dual-CPU systems without strict real-time coherency requirements | Select when cost sensitivity outweighs need for hardware arbitration and board space permits discrete logic |
| IDT7143SA35PFG8 | Same speed/package, but SLAVE-only: BUSY pins are inputs only; no on-chip arbitration logic | Used exclusively with 7133SA35PFG8 MASTER in width-expanded configurations (e.g., 32-bit systems) | Choose only as companion device in MASTER/SLAVE topology - not standalone replacement |
Compared with CY7C133-35PC and IDT7143SA35PFG8, the 7133SA35PFG8 uniquely delivers integrated arbitration, eliminating external glue logic and reducing system-level timing uncertainty in hard real-time applications.
Availability
7133SA35PFG8 is available at Aetrix Electronics and suitable for industrial motion control, avionics data logging, and redundant communication gateway designs requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535-compliant manufacturing traceability.
Supply support for 7133SA35PFG8 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 industrial, communications, and aerospace markets.
The IDT7133/7143 family was designed specifically for real-time embedded systems requiring deterministic dual-processor memory sharing with hardware-enforced coherency - targeting applications where software-managed semaphores introduce unacceptable latency or complexity.
FAQ
What is the function of the BUSY pins on the 7133SA35PFG8?
The BUSYL and BUSYR pins on the 7133SA35PFG8 are open-drain outputs that signal port contention when both ports attempt simultaneous access to the same memory location. As a MASTER device, the 7133SA35PFG8 asserts these flags to stall the contending port; external pull-up resistors are required for proper operation. This hardware arbitration eliminates race conditions without software intervention.
Can the 7133SA35PFG8 operate with a 3.3V supply?
No, the 7133SA35PFG8 requires a single 5.0V ±10% supply (4.5V to 5.5V) and is TTL-compatible. It does not support 3.3V operation. Using a 3.3V supply will result in undefined behavior, failure to meet timing specifications, and potential data corruption. Level-shifting circuitry is required for interfacing with 3.3V controllers.
How does the 7133SA35PFG8 differ from the IDT7143SA35PFG8?
The 7133SA35PFG8 is the MASTER device with on-chip arbitration logic and BUSY output capability, while the IDT7143SA35PFG8 is the SLAVE device with BUSY inputs only and no arbitration logic. They share identical pinouts and timing but serve complementary roles: 7133SA35PFG8 manages contention, and IDT7143SA35PFG8 responds to BUSY signals in width-expanded systems.
What is the significance of the 'SA' suffix in 7133SA35PFG8?
The 'SA' suffix in 7133SA35PFG8 denotes the Standard Active power version - distinguishing it from the low-power 'LA' variant. SA devices have typical active current of 1150 mW and standby current of 5 mW, optimized for performance-critical applications where speed takes precedence over ultra-low standby power.
Is the 7133SA35PFG8 suitable for battery-backed operation?
Yes, the 7133SA35PFG8 supports data retention at VCC = 2V, enabling battery backup functionality. While the LA variant offers lower retention current (100 µA typ.), the SA version retains valid data under brown-out conditions down to 2V - critical for graceful shutdown and state preservation in industrial and avionics systems.
7133SA35PFG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tape & Reel (TR)
- 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:
- 35ns
- Access Time:
- 35 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7133SA35PFG8 FAQ
1.How can I place an order for 7133SA35PFG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133SA35PFG8 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 7133SA35PFG8 reliable?
The price and inventory of 7133SA35PFG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133SA35PFG8 is usually 5 days.
3.What payment methods are accepted for 7133SA35PFG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133SA35PFG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133SA35PFG8?
7133SA35PFG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133SA35PFG8 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 7133SA35PFG8?
For technical support, including 7133SA35PFG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133SA35PFG8 requirements.
6.How does Aetrix verify that 7133SA35PFG8 is sourced from the original manufacturer or authorized distributors?
All 7133SA35PFG8 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 7133SA35PFG8 meets industry standards.
7.What is the process for return or replacement of 7133SA35PFG8?
All 7133SA35PFG8 units undergo pre-shipment inspection (PSI). If there is an issue with 7133SA35PFG8, 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 7133SA35PFG8 part is unused and in its original packaging.
Return procedure for 7133SA35PFG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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