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Renesas 7133LA25PF
- Part No.:
- 7133LA25PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA25PF.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,009
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Product details
Overview
7133LA25PF from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 25ns max access time (industrial grade), 1050mW typical active power, 1µA typical standby current, and battery backup data retention at 2V - used in real-time inter-processor communication systems requiring concurrent read/write access without external arbitration.
For engineers reviewing the 7133LA25PF datasheet, 7133LA25PF pinout, 7133LA25PF application, or 7133LA25PF equivalent, this page delivers verified timing specs, byte-selectable write control per port, BUSY arbitration behavior, industrial temperature support (–40°C to +85°C), and 68-pin PLCC package details essential for deterministic dual-CPU memory interfacing.
Technical Context
The 7133LA25PF implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses - enabling simultaneous access to any memory location. Its on-chip arbitration logic resolves contention via open-drain BUSYL/BUSYR outputs (requiring pull-up resistors) and supports MASTER/SLAVE expansion to 32-bit+ data widths.
It features separate upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), TTL-compatible 5V ±10% supply, and automatic power-down via chip enable (CE). The LA variant delivers ultra-low standby power (1µA typ.) and 2V data retention - critical for battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit reads/writes on both ports |
| Access Time | 25 ns (max) at VCC = 5.0V, TA = –40°C to +85°C; guarantees deterministic latency for real-time inter-processor handshaking |
| Power Consumption | 1050 mW (typ. active), 1 µA (typ. full standby); enables low-power operation during CPU idle cycles |
| Data Retention | 2 V minimum VCC; retains data during main power loss using backup battery - no external circuitry required |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for embedded control, avionics, and industrial automation environments |
| Supply Voltage | 5.0 V ±10%; compatible with standard TTL logic families and legacy 5V system rails |
| Input Capacitance | 11 pF (max); ensures stable signal integrity with standard PCB trace lengths and termination practices |
Pinout & Package
7133LA25PF is packaged in a 68-pin PLCC (PLG68) with 0.95″ × 0.95″ footprint and 0.17″ height. Both VCC and GND pins must be connected for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A11R | Address Inputs (Left/Right) | 11-bit address bus per port; selects one of 2K locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data Bus (Left/Right) | 16-bit parallel data path per port; supports concurrent read/write across ports |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; controls port power-down and memory access activation |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left/Right) | Enables write to I/O8–I/O15 only; allows partial-word updates without masking logic |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left/Right) | Enables write to I/O0–I/O7 only; supports byte-granular memory writes |
| OEL / OER | Output Enable (Left/Right) | Controls tri-state output drivers; isolates data bus when inactive |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention; requires external pull-up; used for hardware arbitration stall |
| VCC (×2) / GND (×2) | Power & Ground | Dual VCC/GND pairs ensure stable voltage distribution and reduce ground bounce in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous access to same address without external logic - eliminates race conditions in dual-CPU systems |
| Separate byte write enables | Enables atomic 8-bit writes to upper/lower bytes - avoids read-modify-write cycles and bus contention |
| 2V data retention | Maintains memory contents during main power failure using backup battery - no volatile data loss |
| MASTER/SLAVE expandability | One 7133LA25PF (MASTER) + multiple 7143LA25PF (SLAVE) enables 32-bit+ word width with single arbitration point |
| Industrial temperature range | Validated operation from –40°C to +85°C - suitable for under-hood automotive, factory floor, and outdoor telecom equipment |
Applications
| Real-Time Inter-Processor Communication | Digital Signal Processing Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory with zero software overhead. IC Role / Device Role / Timing Role: Dual-port RAM acts as synchronous message buffer; left port serves CPU-A, right port serves CPU-B. Use Value: Eliminates polling or interrupt-driven handshaking; 25ns access enables sub-microsecond inter-core data transfer. |
Use Scenario: DSP core writes processed audio samples while host processor reads them for storage or display. IC Role / Device Role / Timing Role: Acts as ping-pong buffer between processing and I/O domains; decouples timing mismatches. Use Value: Prevents pipeline stalls; 16-bit width matches common DSP data paths; 2V retention preserves last valid frame during brownout. |
| Avionics Flight Control Interface | Industrial PLC Memory Expansion |
Use Scenario: Safety-critical flight computer shares telemetry and actuator commands with redundant monitoring unit. IC Role / Device Role / Timing Role: Provides fault-tolerant shared memory with hardware arbitration to prevent conflicting writes. Use Value: BUSY flag enforces deterministic priority resolution; industrial temp rating ensures reliability at altitude. |
Use Scenario: Programmable logic controller expands local memory for ladder logic state tables and I/O mapping. IC Role / Device Role / Timing Role: Serves as fast, non-volatile scratchpad memory accessible by both CPU and FPGA co-processor. Use Value: 68-pin PLCC simplifies through-hole mounting on ruggedized PCBs; 1µA standby extends battery life in remote deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7133SA25PF | Higher active power (1150mW typ.), no 2V data retention; SA variant optimized for speed over low-power operation | Suitable where battery backup is unnecessary and thermal headroom permits higher dissipation | Select when maximum throughput is prioritized over standby efficiency or retention capability |
| 7143LA25PF | SLAVE-only device; BUSY pins are inputs (not outputs); no on-chip arbitration logic; identical pinout and timing | Used only in MASTER/SLAVE configurations - cannot operate standalone as memory controller | Choose only when expanding data width beyond 16 bits with a 7133LA25PF MASTER |
Compared with 7133SA25PF, the 7133LA25PF reduces standby current by 80% and adds 2V data retention - critical for battery-backed systems. Compared with 7143LA25PF, it provides full MASTER functionality including arbitration and BUSY output generation - enabling standalone dual-port operation.
Availability
7133LA25PF is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and avionics flight control interface applications requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.
Supply support for 7133LA25PF 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 semiconductor company specializing in timing, memory interface, RF, and high-performance computing solutions, now part of Renesas Electronics.
The 7133LA25PF belongs to IDT's dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between independent processors or subsystems in mission-critical embedded systems.
FAQ
What is the key functional difference between 7133LA25PF and 7143LA25PF?
The 7133LA25PF is a MASTER dual-port SRAM with on-chip arbitration logic and open-drain BUSY outputs, enabling standalone operation and hardware contention resolution. The 7143LA25PF is a SLAVE device with BUSY inputs only and no arbitration - it must be paired with a 7133LA25PF in width-expansion configurations. Both share identical pinout and timing, but only the 7133LA25PF can function independently as a complete dual-port memory solution.
Does 7133LA25PF support true simultaneous read/write operations on both ports?
Yes - the 7133LA25PF supports fully asynchronous, independent read and write operations on left and right ports. When accessing different addresses, both ports operate concurrently with no timing penalty. When accessing the same address, on-chip arbitration asserts BUSYL or BUSYR to stall the lower-priority port, ensuring data coherency without external logic.
What is required to implement the BUSY arbitration function with 7133LA25PF?
The BUSY outputs (BUSYL/BUSYR) on the 7133LA25PF are open-drain and require external pull-up resistors (typically 4.7kΩ to VCC). When contention occurs, the asserted BUSY signal must be fed back to the requesting controller's wait-state input or interrupt line. No additional glue logic is needed - the 7133LA25PF handles arbitration internally and drives the BUSY flag directly.
Can 7133LA25PF operate reliably at 2V for data retention only?
Yes - the 7133LA25PF guarantees data retention at VCC = 2.0V (min), with typical retention current of 100µA and maximum of 4000µA across military/industrial grades. This mode disables all I/O and internal logic except memory cell biasing; full functionality resumes immediately upon return to 4.5–5.5V operation.
Is the 68-pin PLCC package of 7133LA25PF RoHS-compliant and lead-free?
Yes - the 7133LA25PF in PLCC packaging is offered as a green part per IDT's ordering information. It complies with RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly.
7133LA25PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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:
- 100-TQFP (14x14)
7133LA25PF FAQ
1.How can I place an order for 7133LA25PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA25PF 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 7133LA25PF reliable?
The price and inventory of 7133LA25PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA25PF is usually 5 days.
3.What payment methods are accepted for 7133LA25PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA25PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA25PF?
7133LA25PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA25PF 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 7133LA25PF?
For technical support, including 7133LA25PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA25PF requirements.
6.How does Aetrix verify that 7133LA25PF is sourced from the original manufacturer or authorized distributors?
All 7133LA25PF 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 7133LA25PF meets industry standards.
7.What is the process for return or replacement of 7133LA25PF?
All 7133LA25PF units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA25PF, 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 7133LA25PF part is unused and in its original packaging.
Return procedure for 7133LA25PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA25PF Tags
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AT24C02C-XHM-T
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