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Renesas 7133LA70GB
- Part No.:
- 7133LA70GB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7133LA70GB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,989
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Product details
Overview
7133LA70GB 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, 70 ns maximum read cycle time, 2V data retention capability, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from two independent ports in real-time embedded systems requiring deterministic memory arbitration - such as digital signal processors interfacing with field-programmable gate arrays.
For engineers reviewing the 7133LA70GB datasheet, 7133LA70GB pinout, 7133LA70GB application, or 7133LA70GB equivalent, key selection criteria include its BUSY output flag for port contention resolution, separate upper/lower byte write controls per port, low standby current (1 µA typ.), battery backup support, and compatibility with 68-pin PLCC packaging for legacy industrial control designs.
Technical Context
The 7133LA70GB implements fully asynchronous dual-port operation with independent address, control, and I/O buses for left and right ports. Its on-chip arbitration logic resolves simultaneous accesses to identical memory locations by asserting an open-drain BUSY output (requiring external pull-up) to stall the contending port.
It supports TTL-compatible signaling with single 5V ±10% supply, features byte-level write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and enters ultra-low-power standby mode (<1 µA typ.) when both chip enables (CEL/CER) are deasserted at CMOS levels - enabling battery-backed data retention at 2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total); supports independent 16-bit word access per port |
| Max Read Cycle Time | 70 ns - defines minimum time between successive reads on same port |
| Standby Current | 1 µA typical - enables long-term battery backup without significant drain |
| Data Retention Voltage | 2.0 V minimum - guarantees nonvolatile data hold during main power loss |
| 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 5V TTL logic rails |
| Package | 68-pin PLCC - surface-mount compatible with legacy industrial PCB layouts |
Pinout & Package
7133LA70GB is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), top-view pinout with dual-row gull-wing leads. The package body measures approximately 0.95 in × 0.95 in × 0.17 in and requires both VCC pins connected to 5V and both GND pins tied to ground 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 memory locations independently |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data I/O | 16-bit parallel data path per port; high-impedance when CE/OE inactive |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; controls power-down entry when high |
| R/WLUB / R/WRUB | Upper Byte Write Enable | Controls write to I/O8–I/O15 on left/right port; enables byte-selective writes |
| R/WLLB / R/WRLB | Lower Byte Write Enable | Controls write to I/O0–I/O7 on left/right port; supports partial-word updates |
| OEL / OER | Output Enable (Left/Right) | Active-low enables data output drivers; overrides R/W state during reads |
| BUSYL / BUSYR | Busy Flag (Master Output) | BUSYL is open-drain output indicating left-port contention; requires pull-up resistor |
| VCC (×2) / GND (×2) | Power & Ground | Two dedicated VCC and GND pins ensure stable supply distribution and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| On-chip arbitration logic | Resolves simultaneous port accesses to same address without external logic - eliminates "busy lock-out" in multi-chip width-expansion |
| Separate byte write controls | Enables atomic 8-bit updates to upper/lower halves of 16-bit word - critical for mixed-data-type buffers |
| 2V data retention | Maintains stored contents during main power failure using backup battery - supports fail-safe state preservation |
| Ultra-low standby current | 1 µA typical at CMOS-level inputs - extends battery life in always-on monitoring systems |
| MASTER/SLAVE expandability | Supports seamless 32-bit+ bus width expansion using IDT7143LA as SLAVE - no additional glue logic required |
Applications
| Real-Time DSP Buffering | FPGA-CPU Co-Processing Interface |
|---|---|
|
Use Scenario: Synchronous data exchange between a TI C6000 DSP and external FPGA performing real-time filtering. IC Role / Device Role / Timing Role: MASTER dual-port RAM acts as zero-wait-state shared buffer with deterministic arbitration to prevent pipeline stalls. Use Value: 70 ns access ensures sub-microsecond latency for 16-bit sample transfers, while BUSY logic prevents corrupted writes during concurrent access. |
Use Scenario: High-throughput image preprocessing where FPGA handles pixel-level operations and ARM CPU manages metadata and compression. IC Role / Device Role / Timing Role: Dual-port interface provides non-blocking memory access - FPGA writes raw frames while CPU reads processed tiles. Use Value: Independent left/right ports eliminate software synchronization overhead; 2V retention preserves last frame during brownout. |
| Industrial Motion Controller | Digital Oscilloscope Acquisition Memory |
|
Use Scenario: Closed-loop servo control system requiring deterministic update of position setpoints and feedback capture. IC Role / Device Role / Timing Role: 7133LA70GB serves as shared register bank between motion ASIC and safety monitor MCU. Use Value: Industrial temp rating (–40°C to +85°C) and 1 µA standby current ensure reliability in uncooled enclosures with battery-backed fault logging. |
Use Scenario: 1 GS/s digitizer capturing transient waveforms into circular buffer memory. IC Role / Device Role / Timing Role: Dual-port RAM enables simultaneous acquisition (one port) and display processing (other port) without FIFO bottlenecks. Use Value: Asynchronous operation allows continuous sampling at full rate while display engine reads prior segments - no dead time between triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1362AV-70AXC | 70 ns access, 2K × 16, but lacks on-chip arbitration; BUSY must be implemented externally | Suitable only where external arbitration logic is acceptable; higher BOM cost and board area | Select if existing design already uses Cypress toolchain and external BUSY handling is feasible |
| IDT7143LA70GB | Same speed/package, but SLAVE-only; BUSY pin is input-only, no arbitration logic | Requires pairing with 7133LA70GB as MASTER; cannot operate standalone in arbitration-critical roles | Choose only as companion SLAVE in width-expanded 32-bit+ systems; not a functional replacement |
Compared with CY7C1362AV-70AXC and IDT7143LA70GB, the 7133LA70GB uniquely integrates arbitration logic and BUSY output in a single MASTER device - reducing system complexity for real-time deterministic memory sharing without external components.
Availability
7133LA70GB is available at Aetrix Electronics and suitable for industrial motion controllers, real-time DSP buffering, FPGA-CPU co-processing interfaces, and digital oscilloscope acquisition subsystems requiring stable component supply across extended product lifecycles.
Supply support for 7133LA70GB 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, RF, and sensor solutions, now part of Renesas Electronics since 2019.
The IDT7133/7143 family was designed specifically for deterministic, low-latency dual-port memory applications in industrial automation, test equipment, and military-grade embedded systems requiring hardware-enforced arbitration and battery-backed retention.
FAQ
What is the function of the BUSY pin on the 7133LA70GB?
The BUSY pin on the 7133LA70GB is an open-drain output that signals port contention - it asserts when both left and right ports attempt simultaneous access to the same memory location. This allows external logic to stall the contending port until the ongoing operation completes. Because it is open-drain, the 7133LA70GB requires an external pull-up resistor on BUSYL or BUSYR to generate a valid HIGH level. This behavior is intrinsic to the MASTER role of the 7133LA70GB and distinguishes it from SLAVE devices like the 7143LA70GB.
Does the 7133LA70GB support battery backup operation?
Yes, the 7133LA70GB supports battery backup operation with guaranteed data retention at VCC = 2.0 V minimum. In this mode, the device draws only 100 µA typical (up to 4 mA max) while preserving all 32 Kbits of memory content. This feature is enabled automatically when main supply drops below retention threshold - no software or configuration is required. The 7133LA70GB maintains data integrity across power cycles, making it suitable for fault-logging and state-preserving applications in industrial environments.
Can the 7133LA70GB be used without external arbitration logic?
Yes - the 7133LA70GB contains fully integrated on-chip arbitration logic and does not require external components to resolve port contention. When both ports access the same address concurrently, the internal arbiter grants access to one port and asserts BUSY to block the other. This eliminates timing-critical external gates or CPLDs. However, proper routing of BUSY signals and adherence to tAPS (arbitration priority setup time) of 5 ns is required to guarantee deterministic behavior - details are specified in the 7133LA70GB timing diagrams.
What is the difference between 7133LA70GB and 7143LA70GB?
The 7133LA70GB is a MASTER dual-port SRAM with on-chip arbitration logic and BUSY output, while the 7143LA70GB is a SLAVE device with BUSY input only and no arbitration circuitry. They share identical pinouts and speed grades (70 ns), but the 7143LA70GB cannot operate standalone in arbitration-critical roles. In width-expanded systems, the 7133LA70GB coordinates arbitration and drives BUSY signals to one or more 7143LA70GB SLAVE devices - enabling 32-bit+ word widths without external logic. Using 7143LA70GB alone would leave contention unresolved.
Which package types are available for the 7133LA70GB?
The 7133LA70GB is available in 68-pin PLCC (Plastic Leaded Chip Carrier), as confirmed by the official IDT datasheet and ordering information. While the broader IDT7133/7143 family also offers 68-pin ceramic PGA, 68-pin flatpack, and 100-pin TQFP variants, the 'GB' suffix in 7133LA70GB specifically denotes the 68-pin PLCC package. This surface-mount package is widely supported in industrial PCB assembly and provides mechanical robustness for vibration-prone applications.
7133LA70GB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tube
- 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7133LA70GB FAQ
1.How can I place an order for 7133LA70GB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA70GB 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 7133LA70GB reliable?
The price and inventory of 7133LA70GB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA70GB is usually 5 days.
3.What payment methods are accepted for 7133LA70GB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA70GB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA70GB?
7133LA70GB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA70GB 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 7133LA70GB?
For technical support, including 7133LA70GB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA70GB requirements.
6.How does Aetrix verify that 7133LA70GB is sourced from the original manufacturer or authorized distributors?
All 7133LA70GB 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 7133LA70GB meets industry standards.
7.What is the process for return or replacement of 7133LA70GB?
All 7133LA70GB units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA70GB, 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 7133LA70GB part is unused and in its original packaging.
Return procedure for 7133LA70GB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA70GB Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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