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Renesas 7133LA45G
- Part No.:
- 7133LA45G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7133LA45G.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,144
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Product details
Overview
7133LA45G from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 45 ns max read cycle time, 2.0 V data retention capability, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from two independent ports in real-time systems such as digital signal processors and military avionics.
For engineers reviewing the 7133LA45G datasheet, 7133LA45G pinout, 7133LA45G application, or 7133LA45G equivalent, this page delivers verified timing parameters, byte-select write control, BUSY arbitration behavior, low-power standby current (1 mA typ.), and package-specific pin mapping for 68-pin PLCC, PGA, and flatpack variants.
Technical Context
The 7133LA45G implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention when both ports access the same memory location, asserting open-drain BUSYL/BUSYR outputs to stall the losing port.
It supports TTL-compatible signaling at 5.0 V ±10%, includes independent upper/lower byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and features automatic power-down via chip enable (CE) - enabling 1 mA typical standby current and 2 V battery backup data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total, organized as 2048 words × 16-bit wide) |
| Max Read Cycle Time | 45 ns - defines minimum time between successive reads on same port |
| Standby Current (ISB3) | 0.2 mA typ. - ultra-low power consumption when both ports disabled with CMOS-level inputs |
| Data Retention Voltage | 2.0 V min. - maintains stored data during brown-out or battery backup mode |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL logic rails |
| Bus Width Expansion | Master-only arbitration - enables seamless 32-bit+ width expansion using IDT7143LA slaves |
Pinout & Package
7133LA45G is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), and 68-pin flatpack (FP68) packages. All variants share identical pinout and function mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L | Left Port Address Inputs | 11-bit address bus for left port (2048 locations) |
| A0R–A10R | Right Port Address Inputs | 11-bit address bus for right port (independent addressing) |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path; direction controlled by R/WLUB/R/WLLB |
| I/O0R–I/O15R | Right Port Bidirectional Data | 16-bit data path; direction controlled by R/WRUB/R/WRLB |
| CEL / CER | Chip Enable (Left / Right) | Active-low enables port access and disables internal circuitry for standby |
| R/WLUB / R/WRUB | Upper Byte Write Enable | Controls write to I/O8–I/O15 on respective port |
| R/WLLB / R/WRLB | Lower Byte Write Enable | Controls write to I/O0–I/O7 on respective port |
| OEL / OER | Output Enable (Left / Right) | Active-low enables output drivers; high-Z when deasserted |
| BUSYL / BUSYR | Busy Flag (Output on 7133, Input on 7143) | Open-drain output on 7133LA45G; requires external pull-up; signals arbitration conflict |
| VCC (×2) | Power Supply | Both pins must be connected to 5 V supply for reliable operation |
| GND (×2) | Ground | Both pins must be connected to system ground for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Master arbitration logic | On-chip hardware resolver prevents simultaneous writes to same address; eliminates need for external arbitration logic |
| Byte-select write control | Independent upper/lower byte enables allow partial-word writes without read-modify-write cycles |
| 2 V data retention | Preserves memory contents during main power loss using backup battery or capacitor hold-up |
| Ultra-low standby current | 0.2 mA typical (ISB3) enables long-term battery-backed operation in embedded systems |
| Industrial temperature rating | –40°C to +85°C operation validated across full voltage and timing specs - no derating required |
Applications
| Digital Signal Processing (DSP) Co-Processing | Military Avionics Real-Time Control |
|---|---|
Use Scenario: Two processors (e.g., DSP and host MCU) share sensor data buffers and control registers in real time. IC Role / Device Role / Timing Role: Dual-port RAM acts as zero-wait-state shared memory with hardware arbitration preventing race conditions. Use Value: Enables deterministic latency for interrupt-driven control loops and eliminates software synchronization overhead. |
Use Scenario: Flight control computer and redundant monitoring unit access shared telemetry and configuration tables. IC Role / Device Role / Timing Role: 7133LA45G serves as master in a multi-chip 32-bit-wide memory subsystem with BUSY-controlled arbitration. Use Value: Guarantees data coherency under EMI stress and meets MIL-PRF-38535 QML reliability requirements. |
| Industrial PLC Communication Gateway | Medical Imaging Frame Buffer |
Use Scenario: Fieldbus controller (Modbus/Profibus) and safety processor exchange status and command packets. IC Role / Device Role / Timing Role: Acts as dual-access buffer with independent CE and OE controls per port for protocol isolation. Use Value: Supports concurrent packet assembly and safety-critical response without CPU intervention. |
Use Scenario: MRI or ultrasound system stores acquired scan lines in real time while display engine reads completed frames. IC Role / Device Role / Timing Role: Provides simultaneous write (acquisition port) and read (display port) of 16-bit pixel data at 45 ns cycle time. Use Value: Eliminates frame tearing and enables sub-millisecond latency between acquisition and rendering pipelines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7143LA45G | No on-chip arbitration logic; BUSY pins are inputs only; requires external master (e.g., 7133LA45G) for contention resolution | Used only as slave in width-expanded systems; cannot operate standalone as master | Select when building 32-bit+ memory arrays where one 7133LA45G coordinates multiple 7143LA45G devices |
| Cypress CY7C024AV-45AXC | 45 ns access, 2K × 16, but uses different pinout and lacks BUSY arbitration; requires external logic for conflict resolution | Compatible in basic dual-port read/write use cases but not drop-in for BUSY-dependent designs | Choose only if redesigning PCB layout and accepting added complexity for arbitration |
Compared with IDT7143LA45G and CY7C024AV-45AXC, the 7133LA45G uniquely integrates master arbitration, enabling single-chip contention management and simplifying system-level timing validation in real-time control applications.
Availability
7133LA45G is available at Aetrix Electronics and suitable for digital signal processing, military avionics, and industrial PLC applications requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.
Supply support for 7133LA45G 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 timing, memory interface, and RF solutions, now part of Renesas Electronics.
The IDT7133/7143 family was designed specifically for real-time embedded systems requiring deterministic dual-port memory access with hardware arbitration - targeting aerospace, defense, and industrial automation markets.
FAQ
What is the difference between 7133LA45G and 7143LA45G?
The 7133LA45G contains on-chip arbitration logic and drives BUSY outputs to manage port contention, making it the designated MASTER device. The 7143LA45G has no arbitration logic and accepts BUSY as an input only - it functions exclusively as a SLAVE in width-expanded configurations. Both share identical memory size, timing, and pinout, but only the 7133LA45G can operate standalone in arbitration-sensitive applications.
Does 7133LA45G require external pull-up resistors on BUSY pins?
Yes, the BUSYL and BUSYR pins on the 7133LA45G are open-drain outputs and require external pull-up resistors to VCC (typically 4.7 kΩ) to generate valid HIGH logic levels. This is explicitly stated in the functional block diagram note: "IDT7133 (MASTER): BUSY is open drain output and requires pull-up resistor." Failure to install pull-ups will prevent proper arbitration signaling.
Can 7133LA45G operate at 2.0 V for full functionality?
No - 7133LA45G requires 4.5 V to 5.5 V for active operation. The 2.0 V specification applies only to data retention mode: when VCC drops below 2.0 V, the device enters low-power retention state and preserves stored data, but all read/write operations cease. Full functionality (access, arbitration, I/O drive) is guaranteed only within the 4.5–5.5 V range.
What package options are available for 7133LA45G?
The 7133LA45G is offered in three industry-standard 68-pin packages: PLCC (PLG68), ceramic PGA (GU68), and flatpack (FP68). All share identical pinout and electrical characteristics. The 100-pin TQFP variant (PNG100) is documented for the 7133/7143 family but is not specified for the LA45G speed grade in the provided资料 - only the 68-pin variants are confirmed for this part number.
How does the byte-write enable feature improve system efficiency?
The 7133LA45G provides separate upper-byte (R/WLUB/R/WRUB) and lower-byte (R/WLLB/R/WRLB) write enables per port, allowing partial-word writes without read-modify-write sequences. This reduces bus traffic, eliminates CPU overhead for masking, and prevents unintended overwrites in mixed-data-width systems - critical for efficient register-mapped I/O and protocol stack buffering.
7133LA45G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- 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:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7133LA45G FAQ
1.How can I place an order for 7133LA45G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA45G 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 7133LA45G reliable?
The price and inventory of 7133LA45G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA45G is usually 5 days.
3.What payment methods are accepted for 7133LA45G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA45G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA45G?
7133LA45G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA45G 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 7133LA45G?
For technical support, including 7133LA45G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA45G requirements.
6.How does Aetrix verify that 7133LA45G is sourced from the original manufacturer or authorized distributors?
All 7133LA45G 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 7133LA45G meets industry standards.
7.What is the process for return or replacement of 7133LA45G?
All 7133LA45G units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA45G, 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 7133LA45G part is unused and in its original packaging.
Return procedure for 7133LA45G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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