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Renesas 7133LA20PF
- Part No.:
- 7133LA20PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7133LA20PF.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
7133LA20PF 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, 20 ns maximum read cycle time, 2V data retention capability, and TTL-compatible 5V ±10% operation - used in real-time embedded systems requiring concurrent CPU and DSP access to shared memory buffers.
For engineers reviewing the 7133LA20PF datasheet, 7133LA20PF pinout, 7133LA20PF application, or 7133LA20PF equivalent, this page delivers verified timing parameters, byte-selectable write control per port, BUSY arbitration behavior, industrial temperature support (–40°C to +85°C), and package-specific pin mapping for reliable system integration.
Technical Context
The 7133LA20PF implements fully asynchronous dual-port architecture with independent left/right address, control, and I/O buses. Its on-chip arbitration logic resolves port contention via open-drain BUSYL/BUSYR outputs (requiring external pull-ups), enabling deterministic priority resolution without external logic.
It supports separate upper- and lower-byte write enables (R/WLUB/R/WLLB and R/WRUB/R/WRLB), allowing granular 8-bit writes per port. Battery backup mode maintains data integrity at VCC = 2V with typical ICCDR ≤ 100 µA, validated across commercial and industrial grades.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit), organized as 2048 words × 16-bit wide |
| Access Time (tRC) | 20 ns max - defines minimum read cycle interval for full-speed operation |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible interface; no dual-supply design overhead |
| Data Retention | 2 V minimum - enables battery-backed operation during main power loss |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
| Active Power | 1050 mW typ. - low-power LA variant reduces thermal load vs. SA version |
| Standby Current | 1 mW typ. - ultra-low ISB3 enables energy-sensitive always-on subsystems |
Pinout & Package
7133LA20PF 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 to ensure reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L | Left Port Address Inputs | 11-bit address bus for left-side memory access (2048 locations) |
| A0R–A10R | Right Port Address Inputs | Independent 11-bit address bus for right-side access |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path; high-impedance when OEL or CEL inactive |
| I/O0R–I/O15R | Right Port Bidirectional Data | 16-bit data path; isolated from left port for true concurrency |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls power-down state |
| R/WLUB / R/WLLB | Left Upper/Lower Byte Write Enable | Independent 8-bit write control per left port byte lane |
| R/WRUB / R/WRLB | Right Upper/Lower Byte Write Enable | Independent 8-bit write control per right port byte lane |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; overrides R/W state for reads |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates port contention; requires external pull-up resistor |
| VCC (×2) | Power Supply | Both pins must be connected to 5V ±10%; decoupling critical at high speed |
| GND (×2) | Ground Reference | Both pins must be connected to system ground for signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous left/right port accesses to same address without external logic or software intervention |
| Byte-selectable write control | Enables partial-word writes (8-bit granularity per port), reducing bus traffic and improving efficiency in mixed-data-width systems |
| 2V data retention | Maintains stored contents during brown-out or battery-backup mode, eliminating need for external nonvolatile storage |
| Master/Slave expandability | Supports 32-bit+ bus width expansion using IDT7143LA as SLAVE; eliminates "busy lock-out" via centralized arbitration |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in harsh environments without thermal management overhead |
Applications
| Telecom Line Card Buffering | DSP-Based Motor Control |
|---|---|
Use Scenario: Dual-CPU telecom line card where host processor configures parameters while DSP handles real-time packet processing. IC Role / Device Role / Timing Role: Shared memory buffer with concurrent read/write access; BUSY arbitration prevents data corruption during overlapping accesses. Use Value: Eliminates software semaphores and polling delays; 20 ns access enables sub-microsecond inter-processor communication latency. |
Use Scenario: Real-time motor controller with ARM host managing UI and safety logic while dedicated DSP executes PWM and current-loop algorithms. IC Role / Device Role / Timing Role: Synchronized parameter exchange and status reporting between host and DSP via dual-port RAM. Use Value: Enables deterministic, zero-latency data handoff without interrupt overhead or cache coherency complexity. |
| Avionics Sensor Fusion Hub | Industrial PLC I/O Mapping |
Use Scenario: Flight control system fusing inertial, GPS, and barometric sensor data across redundant processing channels. IC Role / Device Role / Timing Role: MASTER 7133LA20PF coordinates arbitration between two independent sensor processors accessing shared calibration tables. Use Value: Hardware-enforced atomicity ensures consistent state updates; 2V retention preserves critical configuration during power transitions. |
Use Scenario: Modular PLC backplane where main controller and distributed I/O modules require synchronized register mapping. IC Role / Device Role / Timing Role: Dual-port RAM acts as mirrored I/O image - one port for controller writes, other for module reads. Use Value: Removes need for periodic polling or DMA transfers; byte-selectable writes reduce bus bandwidth usage by 50% vs. full-word updates. |
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 | 25 ns access, 68-pin PLCC, no built-in BUSY arbitration logic; requires external logic for contention resolution | Suitable only in systems where software-managed mutual exclusion is acceptable | Select only if arbitration can be handled externally and 5 ns slower access is tolerable |
| IDT7143LA20PF | Same speed/package but SLAVE-only; BUSY pins are inputs only; no on-chip arbitration logic | Used exclusively in width-expanded configurations paired with 7133LA20PF as MASTER | Required companion part for 32-bit+ bus expansion; not standalone functional replacement |
Compared with CY7C133-25JC and IDT7143LA20PF, the 7133LA20PF uniquely integrates arbitration logic and open-drain BUSY signaling - enabling hardware-guaranteed conflict resolution and true plug-and-play dual-processor memory sharing without external components or firmware overhead.
Availability
7133LA20PF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, avionics data acquisition, and programmable logic controller applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for 7133LA20PF 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 IDT7133 family was designed specifically for real-time embedded systems requiring deterministic, contention-free dual-processor memory access - targeting telecom, industrial automation, and aerospace applications.
FAQ
What is the function of the BUSY pins on the 7133LA20PF?
The BUSYL and BUSYR pins on the 7133LA20PF are open-drain outputs that signal port contention when both ports attempt simultaneous access to the same memory location. They require external pull-up resistors and are used to stall the contending port's access until the first operation completes. This hardware arbitration eliminates race conditions without software intervention - a core feature distinguishing the 7133LA20PF from standard SRAMs.
Does the 7133LA20PF support battery backup operation?
Yes, the 7133LA20PF supports battery backup operation down to VCC = 2.0 V, retaining stored data with typical ICCDR ≤ 100 µA. This capability is intrinsic to the LA (Low Power) variant and is validated across commercial and industrial temperature ranges. No external circuitry is required beyond connecting a 2V backup source to the VCC pins during main power loss.
Can the 7133LA20PF be used without the BUSY arbitration feature?
Yes, the 7133LA20PF can operate without BUSY arbitration by tying both BUSYL and BUSYR pins HIGH (via pull-ups), effectively disabling contention detection. In this mode, simultaneous accesses result in undefined data - so it is only safe when software guarantees exclusive access or when contention is architecturally impossible. The 7133LA20PF retains all other functionality including byte-selectable writes and dual-port concurrency.
What is the difference between 7133LA20PF and 7143LA20PF?
The 7133LA20PF is the MASTER dual-port SRAM with on-chip arbitration logic and open-drain BUSY outputs, while the 7143LA20PF is the SLAVE device with BUSY inputs only and no internal arbitration. They share identical pinouts and timing but differ functionally: 7133LA20PF initiates BUSY signaling; 7143LA20PF responds to it. They are designed to be used together for 32-bit+ bus expansion - the 7143LA20PF is not a drop-in replacement for the 7133LA20PF.
Which package types are available for the 7133LA20PF?
The 7133LA20PF is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100). The "PF" suffix in the part number specifically denotes the 68-pin PLCC package. All variants maintain identical electrical specifications and pin functions, though mechanical dimensions and thermal characteristics differ - PLCC offers cost-effective reworkability, while TQFP provides higher I/O density.
7133LA20PF 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:
- 20ns
- Access Time:
- 20 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)
7133LA20PF FAQ
1.How can I place an order for 7133LA20PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA20PF 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 7133LA20PF reliable?
The price and inventory of 7133LA20PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA20PF is usually 5 days.
3.What payment methods are accepted for 7133LA20PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA20PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA20PF?
7133LA20PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA20PF 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 7133LA20PF?
For technical support, including 7133LA20PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA20PF requirements.
6.How does Aetrix verify that 7133LA20PF is sourced from the original manufacturer or authorized distributors?
All 7133LA20PF 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 7133LA20PF meets industry standards.
7.What is the process for return or replacement of 7133LA20PF?
All 7133LA20PF units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA20PF, 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 7133LA20PF part is unused and in its original packaging.
Return procedure for 7133LA20PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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