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Renesas 7133LA20PFG
- Part No.:
- 7133LA20PFG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA20PFG.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:260
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Product details
Overview
7133LA20PFG from IDT (Integrated Device Technology) is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 20 ns maximum read cycle time, 5 V single-supply operation, and 1 μW typical standby power. It supports independent asynchronous access on left/right ports and enables 32-bit+ bus expansion via MASTER/SLAVE configuration with IDT7143 devices in industrial temperature applications.
For engineers reviewing the 7133LA20PFG datasheet, 7133LA20PFG pinout, 7133LA20PFG application, or 7133LA20PFG equivalent, key selection criteria include bus contention arbitration capability, byte-selectable write control per port, battery-backed data retention at 2 V, TTL-compatible I/O, and availability in 68-pin PLCC package for legacy industrial control and military-grade embedded systems.
Technical Context
The 7133LA20PFG implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O buses for left and right ports. Its on-chip arbitration logic resolves simultaneous accesses to identical memory locations by asserting open-drain BUSY outputs to stall the contending port.
It supports two independent write enable schemes per port-upper-byte (R/WLUB/R/WRUB) and lower-byte (R/WLLB/R/WRLB)-and features automatic power-down via chip enable (CEL/CER), enabling ultra-low standby current (1 μA typical) while retaining data at 2 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits = 4,096 words × 16-bit wide; supports independent 16-bit parallel access from either port |
| Read Cycle Time | 20 ns max (commercial grade); defines minimum interval between successive reads on same port |
| Standby Current | 1 μA typical (ISB3, CMOS-level CE); enables battery backup operation with minimal drain |
| Data Retention Voltage | 2.0 V min; guarantees nonvolatile data hold during brownout or backup battery mode |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); TTL-compatible interface eliminates level-shifting in legacy 5 V systems |
| Operating Temperature | −40°C to +85°C (industrial grade); qualified for harsh environments without derating |
| Arbitration Logic | On-chip port-to-port conflict detection with BUSYL/BUSYR open-drain flags; eliminates external arbitration circuitry |
Pinout & Package
7133LA20PFG is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in, with dual-row J-lead configuration and pin 1 index notch. Both VCC and GND pins require connection for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address per port; selects one of 2K (2048) memory locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel I/O per port; supports simultaneous read/write across ports with arbitration |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables port access; controls power-down state when deasserted (high) |
| R/WLUB / R/WRUB | Upper-Byte Write Enable (Left/Right) | Controls write to I/O8–I/O15; enables byte-granular writes without disturbing lower byte |
| R/WLLB / R/WRLB | Lower-Byte Write Enable (Left/Right) | Controls write to I/O0–I/O7; allows partial-word updates and avoids read-modify-write overhead |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; places I/O pins in high-Z when disabled |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-drain output (7133) or input (7143); signals port contention; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Master arbitration logic | Enables single-chip hardware resolution of port conflicts-no FPGA or discrete logic needed for dual-CPU memory sharing |
| Byte-selectable write control | Reduces bus traffic and eliminates software overhead for partial-word updates across both ports |
| 2 V data retention | Supports seamless transition to battery backup during main power loss-critical for avionics and industrial PLCs |
| 68-pin PLCC package | Provides proven reliability and thermal performance in convection-cooled industrial enclosures; compatible with wave-solder reflow |
| TTL-compatible I/O | Direct interface with legacy 5 V microcontrollers, FPGAs, and ASICs-no level translators required |
Applications
| Real-Time Motion Control | Dual-Processor Communication Buffer |
|---|---|
Use Scenario: Coordinating servo axis commands between motion controller CPU and safety monitor CPU in CNC machines. IC Role / Device Role / Timing Role: Dual-port RAM acts as shared command/status register bank; left port writes new position setpoints, right port reads execution status with sub-20 ns latency. Use Value: Eliminates polling delays and race conditions-ensures deterministic response under worst-case 20 ns read cycle timing. | Use Scenario: Inter-processor messaging between host ARM processor and real-time DSP in radar signal processing subsystems. IC Role / Device Role / Timing Role: Serves as zero-copy mailbox memory; one port handles DMA writes from ARM, other handles interrupt-driven reads by DSP. Use Value: Enables lock-free communication with guaranteed atomicity-BUSY arbitration prevents corrupted frame headers during concurrent access. |
| Industrial PLC I/O Mapping | Military Avionics Health Monitoring |
Use Scenario: Storing and synchronizing digital I/O states across redundant PLC scan cycles in safety-critical factory automation. IC Role / Device Role / Timing Role: Acts as mirrored I/O image memory; left port updated by scan logic, right port accessed by diagnostics engine every 10 ms. Use Value: Provides bit-accurate, timestamp-free state capture-eliminates need for shadow registers or software synchronization primitives. | Use Scenario: Maintaining fault logs and sensor calibration tables in airborne flight control computers operating across −55°C to +125°C range. IC Role / Device Role / Timing Role: Stores critical health data with 2 V battery backup; left port writes during nominal operation, right port reads during cold-start recovery. Use Value: Guarantees data persistence through full power loss-even during extended ground maintenance with main battery disconnected. |
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 × 16, 25 ns access, no on-chip arbitration logic; BUSY must be implemented externally | Lacks master/slave arbitration-requires additional logic for multi-chip width expansion | Choose when arbitration is handled in FPGA or when single-chip use suffices |
| IDT7143LA20PFG | Same speed/package but SLAVE-only; BUSY pins are inputs only; no arbitration logic | Designed exclusively for width-expansion configurations paired with 7133LA20PFG | Select only as companion device in MASTER/SLAVE 32-bit+ systems-not standalone replacement |
Compared with CY7C133-25JC and IDT7143LA20PFG, the 7133LA20PFG uniquely integrates arbitration logic and retains data at 2 V, making it the sole choice for self-contained, battery-backed dual-CPU memory sharing without external components.
Availability
7133LA20PFG is available at Aetrix Electronics and suitable for industrial motion control, avionics health monitoring, and redundant PLC I/O mapping requiring stable component supply across extended product lifecycles.
Supply support for 7133LA20PFG 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 IDT7133 family was designed specifically for deterministic, low-latency memory sharing between dual processors or real-time subsystems-emphasizing hardware arbitration, battery backup, and industrial/military temperature resilience.
FAQ
What is the function of the BUSY pins on the 7133LA20PFG?
The BUSYL and BUSYR pins on the 7133LA20PFG are open-drain outputs that signal port contention when both ports attempt simultaneous access to the same memory location. They stall the contending port's write operation until the first access completes. External pull-up resistors are required, and these pins enable hardware-level arbitration without external logic-core to the 7133LA20PFG's MASTER functionality.
Does the 7133LA20PFG support true dual-port operation without arbitration overhead?
Yes-the 7133LA20PFG supports fully asynchronous, independent read/write operations on left and right ports when accessing different addresses. Arbitration overhead only occurs during actual contention (same address, overlapping access). In non-contention cases, the 7133LA20PFG delivers deterministic 20 ns read cycles with zero arbitration latency, preserving real-time determinism.
Can the 7133LA20PFG operate with a 2 V backup supply while main power is off?
Yes-the 7133LA20PFG guarantees data retention at VCC = 2.0 V minimum, drawing only 100 µA typical (up to 4 mA max) in retention mode. This enables seamless failover to backup batteries in avionics and industrial systems, preserving critical state without software intervention or capacitor hold-up circuits.
How does the 7133LA20PFG differ from the IDT7143LA20PFG?
The 7133LA20PFG contains on-chip arbitration logic and drives BUSY as an output; the IDT7143LA20PFG has no arbitration logic and accepts BUSY as an input only. They share identical pinout and timing but serve complementary roles: 7133LA20PFG is the MASTER for arbitration, while IDT7143LA20PFG is the SLAVE for width expansion-neither is a drop-in substitute for the other.
Is the 68-pin PLCC package of the 7133LA20PFG RoHS-compliant?
Yes-the 7133LA20PFG in PLCC packaging meets RoHS Directive 2011/65/EU requirements. "Green parts" designation in the datasheet confirms lead-free terminations and halogen-free molding compound, supporting compliance for industrial and defense applications requiring environmental certification.
7133LA20PFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 20ns
- Access Time:
- 20 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)
7133LA20PFG FAQ
1.How can I place an order for 7133LA20PFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA20PFG 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 7133LA20PFG reliable?
The price and inventory of 7133LA20PFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA20PFG is usually 5 days.
3.What payment methods are accepted for 7133LA20PFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA20PFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA20PFG?
7133LA20PFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA20PFG 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 7133LA20PFG?
For technical support, including 7133LA20PFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA20PFG requirements.
6.How does Aetrix verify that 7133LA20PFG is sourced from the original manufacturer or authorized distributors?
All 7133LA20PFG 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 7133LA20PFG meets industry standards.
7.What is the process for return or replacement of 7133LA20PFG?
All 7133LA20PFG units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA20PFG, 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 7133LA20PFG part is unused and in its original packaging.
Return procedure for 7133LA20PFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA20PFG Tags
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