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Renesas 7133LA25JGI8
- Part No.:
- 7133LA25JGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133LA25JGI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
IDT7133LA25JGI8 from Integrated Device Technology (IDT) is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 25 ns maximum access time, industrial temperature range (–40°C to +85°C), and 1 mW typical standby power. It enables simultaneous asynchronous read/write access from independent left and right ports in real-time embedded systems requiring deterministic memory contention resolution.
For engineers reviewing the IDT7133LA25JGI8 datasheet, IDT7133LA25JGI8 pinout, IDT7133LA25JGI8 application, or IDT7133LA25JGI8 equivalent, key selection criteria include BUSY arbitration timing (tBAA ≤ 25 ns), byte-selectable write control (R/WLUB/R/WLLB), dual 5V TTL-compatible I/O, battery backup data retention at 2V, and 68-pin PLCC package compatibility for legacy industrial control designs.
Technical Context
The IDT7133LA25JGI8 implements on-chip port arbitration logic exclusively in MASTER mode, generating open-drain BUSYL/BUSYR outputs that require external pull-up resistors. Its dual independent ports support fully asynchronous operation with separate address (A0L–A10L / A0R–A10R), control (CEL/CER, R/WLUB/R/WLLB, OEL/OER), and 16-bit bidirectional I/O buses (I/O0L–I/O15L / I/O0R–I/O15R).
It supports byte-level write enable per port, automatic power-down via chip enable (CE), and 2V data retention during battery backup. The device operates across –40°C to +85°C with 5.0 V ±10% supply and meets MIL-PRF-38535 QML for high-reliability applications when ordered in military-grade variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 KB total, organized as 2048 words × 16 bits) |
| Access Time | 25 ns max - guarantees deterministic latency for real-time interrupt handlers and DSP co-processors |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL logic families without level-shifting |
| Standby Current | 1 mW typ. (≈200 µA @ 5V) - enables low-power hold mode during CPU sleep states |
| Data Retention | 2 V minimum - sustains memory contents during main power loss using backup battery |
| Operating Temp | –40°C to +85°C - qualified for industrial automation, motor drives, and avionics subsystems |
| Package | 68-pin PLCC (PLG68) - surface-mount compatible with reflow assembly and legacy repair workflows |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in, with dual VCC and GND pins requiring connection for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low port selection; controls power-down entry/exit and bus contention arbitration |
| R/WLUB / R/WLLB R/WRUB / R/WRLB | Upper/Lower Byte Write Enable | Independent byte-write control per port - enables 8-bit peripheral interfacing without masking logic |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O bus independently per port - essential for shared-bus multiplexing |
| BUSYL / BUSYR | Busy Flag (Open-Drain Output) | Indicates memory address contention; requires external pull-up; used for hardware stall synchronization |
| A0L–A10L / A0R–A10R | Address Inputs | 11-bit address per port - supports full 2K-word addressing with no external decoding |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (16-bit bidirectional) | Two independent 16-bit data paths - enables concurrent CPU/DSP access without software coordination |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous same-address access in hardware - eliminates need for external priority encoders or software polling |
| Byte-selectable write control | Enables partial-word writes (upper/lower 8 bits) - reduces bus traffic and avoids read-modify-write cycles |
| Open-drain BUSY outputs | Allows wired-OR of multiple BUSY signals - simplifies interrupt generation for multi-RAM systems |
| 2V data retention | Maintains SRAM state during main power failure - supports graceful shutdown and fast resume in PLCs and HMIs |
| TTL-compatible I/O | Direct interface with 5V microcontrollers, FPGAs, and ASICs - no level translators required |
Applications
| Industrial Motion Controller | Digital Signal Processor Co-Processor |
|---|---|
Use Scenario: Real-time servo loop execution where FPGA handles PWM generation while ARM CPU manages trajectory planning. IC Role / Device Role / Timing Role: Dual-port RAM acts as synchronized data exchange buffer between FPGA and CPU, with BUSY arbitration preventing write collisions on shared status registers. Use Value: Eliminates software semaphore overhead; 25 ns access ensures sub-microsecond inter-processor communication latency. | Use Scenario: Audio processing system where DSP performs FFT analysis while host MCU streams new samples. IC Role / Device Role / Timing Role: IDT7133LA25JGI8 provides zero-wait-state memory window for DMA-accessed sample buffers - left port for DSP reads/writes, right port for MCU updates. Use Value: Enables continuous streaming without pipeline stalls; byte-write enables efficient metadata tagging of audio frames. |
| Avionics Display Generator | Programmable Logic Controller (PLC) |
Use Scenario: Flight display unit rendering graphics while flight management computer updates navigation data. IC Role / Device Role / Timing Role: Acts as frame buffer and telemetry scratchpad - left port driven by GPU, right port updated by FMC over ARINC-429 interface logic. Use Value: Hardware BUSY signaling prevents corrupted frame updates during critical navigation data writes. | Use Scenario: Industrial PLC executing ladder logic while HMI updates configuration parameters. IC Role / Device Role / Timing Role: Shared memory for I/O mapping - left port accessed by real-time scan engine, right port used by Ethernet/IP stack for parameter read/write. Use Value: 2V data retention preserves I/O state during brown-out events; 68-pin PLCC supports field-replaceable module design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1371DV33-25BGXI | 3.3V core, 25 ns access, 2K × 16, no built-in arbitration logic - requires external BUSY management | Lacks on-chip arbitration; suitable only where software-controlled access or external logic handles contention | Select when migrating to 3.3V systems and external arbitration is acceptable |
| ISSI IS61WV204816BLL-25MLI | 3.3V/2.5V dual-supply, 25 ns, 2K × 16, no BUSY pins - true dual-port without arbitration | No hardware contention resolution; relies on system-level protocol or time-division multiplexing | Choose for cost-sensitive designs where deterministic arbitration is not required |
Compared with CY7C1371DV33-25BGXI and IS61WV204816BLL-25MLI, the IDT7133LA25JGI8 uniquely integrates master arbitration logic and 5V TTL compatibility - making it irreplaceable in legacy industrial controllers requiring hardware-enforced memory coherency without added logic.
Availability
IDT7133LA25JGI8 is available at Aetrix Electronics and suitable for industrial motion control, avionics display systems, programmable logic controllers, and digital signal processor co-processor designs requiring stable component supply across extended product lifecycles.
Supply support for IDT7133LA25JGI8 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 real-time embedded systems requiring deterministic dual-ported memory with hardware arbitration - targeting industrial automation, test equipment, and military computing where software-managed memory coherency is unacceptable.
FAQ
What is the function of the BUSY pins on the IDT7133LA25JGI8?
The BUSYL and BUSYR pins on the IDT7133LA25JGI8 are open-drain outputs indicating memory address contention between ports. When both ports access the same location simultaneously, BUSY asserts to stall the lower-priority port. These pins require external pull-up resistors and are used for hardware synchronization in real-time systems. The IDT7133LA25JGI8 implements this logic internally as the MASTER device.
Does the IDT7133LA25JGI8 support battery backup operation?
Yes, the IDT7133LA25JGI8 supports battery backup operation with guaranteed data retention at VCC = 2.0 V minimum. In this mode, standby current is typically 200 µA per port, enabling long-term memory hold during main power loss. This feature is intrinsic to the LA (low-power) variant and is confirmed in the device's DC electrical characteristics table.
What package type is used for the IDT7133LA25JGI8?
The IDT7133LA25JGI8 uses a 68-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG68. Its dimensions are approximately 0.95 in × 0.95 in × 0.17 in. This package includes two VCC and two GND pins, all of which must be connected to ensure reliable operation per the manufacturer's pin configuration documentation.
Can the IDT7133LA25JGI8 be used in a 32-bit memory expansion?
Yes, the IDT7133LA25JGI8 can serve as the MASTER in a 32-bit (or wider) dual-port memory expansion when paired with one or more IDT7143 SLAVE devices. The MASTER provides BUSY arbitration, while SLAVES accept BUSY as an input to inhibit writes during contention. This architecture avoids "busy lock-out" and requires no external logic - a capability explicitly documented for the IDT7133LA25JGI8.
What is the difference between IDT7133LA25JGI8 and IDT7143LA25JGI8?
The IDT7133LA25JGI8 is the MASTER dual-port RAM with on-chip arbitration logic and open-drain BUSY outputs, while the IDT7143LA25JGI8 is the SLAVE device with BUSY inputs only and no internal arbitration. They share identical pinouts and timing but differ in BUSY functionality and role in width-expansion configurations - the IDT7133LA25JGI8 must be used as the arbitration source in MASTER/SLAVE systems.
7133LA25JGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- 68-PLCC (24.21x24.21)
7133LA25JGI8 FAQ
1.How can I place an order for 7133LA25JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA25JGI8 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 7133LA25JGI8 reliable?
The price and inventory of 7133LA25JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA25JGI8 is usually 5 days.
3.What payment methods are accepted for 7133LA25JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA25JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA25JGI8?
7133LA25JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA25JGI8 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 7133LA25JGI8?
For technical support, including 7133LA25JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA25JGI8 requirements.
6.How does Aetrix verify that 7133LA25JGI8 is sourced from the original manufacturer or authorized distributors?
All 7133LA25JGI8 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 7133LA25JGI8 meets industry standards.
7.What is the process for return or replacement of 7133LA25JGI8?
All 7133LA25JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA25JGI8, 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 7133LA25JGI8 part is unused and in its original packaging.
Return procedure for 7133LA25JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA25JGI8 Tags
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