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Renesas 7133LA25PFGI
- Part No.:
- 7133LA25PFGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA25PFGI.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
7133LA25PFGI 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, 25 ns maximum access time, industrial temperature range (–40°C to +85°C), and low-power LA-series operation (1050 mW active, 1 µA standby). It enables error-free 32-bit+ memory expansion when paired with IDT7143 SLAVE devices in real-time embedded control systems.
For engineers reviewing the 7133LA25PFGI datasheet, 7133LA25PFGI pinout, 7133LA25PFGI application, or 7133LA25PFGI equivalent, key selection considerations include its open-drain BUSY output requiring pull-up, byte-level write enable per port, 68-pin PLCC package, battery backup capability at 2 V, and TTL-compatible 5 V ±10% supply.
Technical Context
The 7133LA25PFGI implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention by asserting BUSYL/BUSYR flags and gating writes on the contended port - a hardware mechanism eliminating need for external arbitration logic.
It supports separate upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), enabling partial-word writes without read-modify-write cycles. The device enters ultra-low-power data retention mode (<1 µA) at VCC = 2 V, preserving contents during battery backup operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 16 (32,768 bits), dual-port SRAM with independent left/right access |
| Access Time (max) | 25 ns - guarantees full-speed operation in industrial-temperature real-time control loops |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL logic families and legacy 5 V systems |
| Active Current (typ) | 230 mA - corresponds to ~1050 mW power dissipation at 5 V, enabling thermal design in dense PCB layouts |
| Standby Current (typ) | 0.2 mA - enables battery-backed operation with multi-year retention at 2 V |
| Data Retention Voltage | 2.0 V minimum - supports seamless switchover to backup battery during main supply failure |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, motor drives, and telecom line cards |
Pinout & Package
7133LA25PFGI is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in, with two VCC and two GND pins requiring connection for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | 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 I/O (Left/Right) | 16-bit parallel data path per port; high-impedance when CE or OE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enable; controls port power-down and memory access permission |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left/Right) | Enables write to I/O8–I/O15 only; allows partial-word updates without corruption |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left/Right) | Enables write to I/O0–I/O7 only; supports byte-granular memory management |
| OEL / OER | Output Enable (Left/Right) | Controls tri-state output drivers; decouples data bus timing from address/control setup |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Signals port contention; requires external pull-up; used for hardware arbitration stall |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous left/right access to same address without external logic or software intervention |
| Separate upper/lower byte write enables | Eliminates read-modify-write overhead for 8-bit peripheral register updates in microcontroller systems |
| Open-drain BUSY outputs with priority resolution | Enables wired-OR interrupt generation and deterministic master-slave coordination in multi-chip arrays |
| 2 V data retention mode | Preserves RAM contents during brown-out or hot-swap events without volatile backup capacitor |
| 68-pin PLCC industrial package | Provides mechanical robustness and thermal performance suitable for convection-cooled industrial enclosures |
Applications
| Motor Control System | Digital Signal Processing Buffer |
|---|---|
Use Scenario: Real-time servo loop running at 20 kHz with FPGA-based position controller and MCU-based trajectory planner sharing shared memory. IC Role / Device Role / Timing Role: MASTER dual-port RAM acting as low-latency communication buffer between FPGA (left port) and ARM Cortex-M7 (right port). Use Value: 25 ns access ensures sub-microsecond inter-processor handshaking, enabling jitter-free motion profiling without software arbitration delays. |
Use Scenario: Audio codec interfacing with DSP and host processor, requiring concurrent streaming and parameter update. IC Role / Device Role / Timing Role: Dual-port SRAM serving as ping-pong buffer for 24-bit stereo audio samples between TI C674x DSP (left) and Xilinx Zynq PS (right). Use Value: Independent byte write enables allow DSP to update filter coefficients in lower byte while streaming PCM in upper byte-no bus contention or cycle loss. |
| Industrial PLC I/O Module | Avionics Data Concentrator |
Use Scenario: Modular PLC backplane where fieldbus controller and safety monitor concurrently access I/O image table. IC Role / Device Role / Timing Role: MASTER 7133LA25PFGI provides atomic read/write access to 32-byte I/O mapping region with hardware BUSY arbitration. Use Value: Open-drain BUSY outputs wired-OR'd to generate NMI interrupt on either CPU, ensuring deterministic fault response within 35 ns of contention detection. |
Use Scenario: ARINC 429 data concentrator aggregating sensor inputs for flight control computer and display system. IC Role / Device Role / Timing Role: Dual-port RAM buffers time-stamped sensor packets (left port) and formatted display frames (right port) with guaranteed coherency. Use Value: Battery backup at 2 V maintains last-valid sensor state across power cycles, satisfying DO-160 Section 22 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362V-25AXI | 32K × 16 organization, 25 ns access, 3.3 V core (5 V tolerant I/O), no built-in BUSY arbitration | Requires external logic or firmware for port contention handling; better suited for non-real-time buffering | Select when higher density and lower voltage operation outweigh need for hardware arbitration |
| IDT7143LA25PFGI | SLAVE variant: identical pinout and timing, but BUSY pins are inputs (not outputs); no on-chip arbitration logic | Used only in MASTER/SLAVE width-expansion configurations; cannot operate standalone as arbitrator | Select only as companion to 7133LA25PFGI in 32-bit+ memory systems requiring BUSY-controlled write inhibition |
Compared with CY7C1362V-25AXI and IDT7143LA25PFGI, the 7133LA25PFGI uniquely delivers integrated arbitration, making it the sole choice for deterministic, zero-software-overhead dual-CPU memory sharing in hard real-time industrial and avionics systems.
Availability
7133LA25PFGI is available at Aetrix Electronics and suitable for industrial motor drives, avionics data concentrators, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle support, and MIL-PRF-38535-compliant reliability.
Supply support for 7133LA25PFGI 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.
The IDT7133/7143 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems-emphasizing hardware arbitration, battery backup, and industrial-grade packaging.
FAQ
What is the function of the BUSY pin on the 7133LA25PFGI?
The BUSY pin on the 7133LA25PFGI is an open-drain output that signals port contention when both left and right ports attempt simultaneous access to the same memory location. It must be externally pulled up and is used to stall the contended port's write operation. This hardware arbitration eliminates race conditions without software intervention, and is central to the device's role as a MASTER in width-expanded memory systems.
Can the 7133LA25PFGI operate with a 3.3 V supply?
No, the 7133LA25PFGI requires a single 5.0 V ±10% supply (4.5 V to 5.5 V) and is not rated for 3.3 V operation. Its input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and output drive levels (VOH = 2.4 V min at –4 mA) are specified for TTL compatibility. Using 3.3 V would violate DC operating conditions and risk unreliable read/write behavior or excessive leakage current.
How does the 7133LA25PFGI support battery backup operation?
The 7133LA25PFGI supports data retention at VCC = 2.0 V with typical current draw of 100 µA (max 4000 µA over temperature). When main supply drops below ~2.2 V, the device automatically enters retention mode-preserving all 32,768 bits without external circuitry. This feature is intrinsic to the LA-series low-power CMOS process and is validated across the industrial temperature range.
Is the 7133LA25PFGI pin-compatible with the IDT7143LA25PFGI?
Yes, the 7133LA25PFGI and IDT7143LA25PFGI share identical 68-pin PLCC pinouts and AC/DC specifications, including 25 ns access time and industrial temperature rating. However, their BUSY pin functionality differs: 7133LA25PFGI has BUSY as open-drain output (MASTER), while IDT7143LA25PFGI has BUSY as input (SLAVE). This functional difference requires careful schematic assignment.
What is the purpose of separate upper and lower byte write enables on the 7133LA25PFGI?
The separate R/WLUB/R/WLLB (left) and R/WRUB/R/WRLB (right) pins enable independent 8-bit write operations to the upper (I/O8–I/O15) or lower (I/O0–I/O7) byte of each 16-bit word. This avoids destructive read-modify-write sequences when updating peripheral registers or status fields, reducing bus traffic and improving determinism in real-time systems-especially critical in motor control and digital power applications.
7133LA25PFGI 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7133LA25PFGI FAQ
1.How can I place an order for 7133LA25PFGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA25PFGI 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 7133LA25PFGI reliable?
The price and inventory of 7133LA25PFGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA25PFGI is usually 5 days.
3.What payment methods are accepted for 7133LA25PFGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA25PFGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA25PFGI?
7133LA25PFGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA25PFGI 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 7133LA25PFGI?
For technical support, including 7133LA25PFGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA25PFGI requirements.
6.How does Aetrix verify that 7133LA25PFGI is sourced from the original manufacturer or authorized distributors?
All 7133LA25PFGI 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 7133LA25PFGI meets industry standards.
7.What is the process for return or replacement of 7133LA25PFGI?
All 7133LA25PFGI units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA25PFGI, 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 7133LA25PFGI part is unused and in its original packaging.
Return procedure for 7133LA25PFGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA25PFGI Tags
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