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Renesas 7133LA20JG
- Part No.:
- 7133LA20JG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
7133LA20JG.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,235
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Product details
Overview
7133LA20JG from IDT is a high-speed 2K × 16 dual-port static RAM with master arbitration logic, 20 ns max read cycle time, 2V data retention capability, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access from left and right ports in real-time systems such as digital signal processors and military avionics.
For engineers reviewing the 7133LA20JG datasheet, 7133LA20JG pinout, 7133LA20JG application, or 7133LA20JG equivalent, this page delivers verified timing specs, byte-select write control, BUSY arbitration behavior, and package-specific pin mapping for 68-pin PLCC implementation.
Technical Context
The 7133LA20JG implements fully asynchronous dual-port operation with independent 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 flags requiring external pull-up resistors.
It supports separate upper- and lower-byte write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), TTL-compatible 5V ±10% supply, and battery backup mode with 2V VCC retention - enabling nonvolatile operation during main power loss in embedded control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total); supports 16-bit parallel data paths on both ports independently. |
| Access Time | 20 ns (max) read cycle time; guarantees deterministic latency for real-time interrupt servicing or DSP co-processing. |
| Operating Voltage | 5.0 V ±10%; compatible with standard TTL logic families without level-shifting circuitry. |
| Data Retention | 2 V minimum VCC; maintains stored data during brownout or battery-backup operation without refresh. |
| Power Consumption | 1050 mW active (typ), 1 mW standby (typ); low-power LA variant optimized for energy-constrained industrial systems. |
| Temperature Range | –40°C to +85°C; qualified for industrial-grade reliability in harsh environments like factory automation. |
| Arbitration Logic | On-chip port-to-port arbitration with BUSY flag generation; eliminates need for external glue logic in multi-CPU shared-memory designs. |
Pinout & Package
7133LA20JG is packaged in a 68-pin PLCC (PLG68), with dual-port symmetry: left port (L) and right port (R) each feature independent address (A0L–A10L / A0R–A10R), data I/O (I/O0L–I/O15L / I/O0R–I/O15R), and control signals (CEL/CER, R/WLUB/R/WRUB, R/WLLB/R/WRLB, OEL/OER, BUSYL/BUSYR).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable controlling port power-down; CE HIGH places respective port in ultra-low standby (1 µA typ). |
| R/WLUB / R/WRUB | Upper Byte Write Enable (L/R) | Selects upper byte (I/O8–I/O15) for write; enables byte-granular writes without disturbing lower byte contents. |
| R/WLLB / R/WRLB | Lower Byte Write Enable (L/R) | Selects lower byte (I/O0–I/O7) for write; allows independent 8-bit updates per port per cycle. |
| OEL / OER | Output Enable (L/R) | Tri-states I/O pins when HIGH; permits bus sharing and prevents contention during multiplexed data transfers. |
| BUSYL / BUSYR | Busy Flag (L/R output / input) | Open-drain output on 7133LA; asserts during address collision to stall competing port access until resolution. |
| VCC (pins 17, 51) | Power Supply | Both pins must be connected to 5V ±10%; ensures stable core and I/O voltage distribution across large die area. |
| GND (pins 26, 43) | Ground Reference | Both pins must be connected to system ground; minimizes noise coupling between ports and improves signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Master arbitration logic | Enables single-chip arbitration in multi-RAM width-expansion systems, eliminating "busy lock-out" in 32-bit+ configurations. |
| Byte-select write control | Independent upper/lower byte enables per port allow partial-word writes without read-modify-write overhead. |
| 2V data retention | Preserves memory contents during main power failure using backup battery, critical for fault-tolerant control state storage. |
| Industrial temperature rating | Validated operation from –40°C to +85°C ensures reliability in uncontrolled environments like motor drives and rail signaling. |
| TTL-compatible interface | Direct connection to legacy 5V microcontrollers and FPGAs without level shifters or additional drivers. |
Applications
| Real-Time Digital Signal Processing | Military Avionics Data Buffering |
|---|---|
|
Use Scenario: Dual-CPU architecture where one processor handles sensor acquisition while another performs FFT-based analysis on shared memory. IC Role / Device Role / Timing Role: Dual-port RAM acts as zero-wait-state shared buffer; left port accepts ADC stream, right port feeds DSP engine. Use Value: 20 ns access enables sub-microsecond inter-processor handshaking, eliminating pipeline stalls in radar pulse processing. |
Use Scenario: Flight control computer requiring concurrent read/write access to navigation state variables by safety-critical and non-critical partitions. IC Role / Device Role / Timing Role: Master 7133LA20JG arbitrates conflicting accesses; BUSY flag enforces deterministic priority resolution per MIL-STD-1553 timing budgets. Use Value: On-chip arbitration replaces discrete logic, reducing BOM count and improving FIT rate in DO-254-certified hardware. |
| Industrial PLC Shared Memory | Telecom Line Card Buffering |
|
Use Scenario: Programmable logic controller with separate I/O scan engine and motion control loop accessing common parameter table. IC Role / Device Role / Timing Role: 7133LA20JG provides atomic read-modify-write for setpoint updates; byte-enable prevents corruption of adjacent configuration fields. Use Value: 1 mW standby current extends runtime during brownouts, maintaining critical I/O states during grid instability events. |
Use Scenario: TDM switch fabric where line interface ASIC writes incoming frames while network processor reads for packet assembly. IC Role / Device Role / Timing Role: Dual-port RAM decouples write-heavy ingress path from read-heavy egress path, avoiding FIFO bottlenecks. Use Value: 2K × 16 capacity supports full E1/T1 frame buffering (256 bytes × 32 channels), enabling jitter-free voice transport. |
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 time; no on-chip arbitration logic; BUSY function requires external logic. | Suitable only for simple dual-CPU systems without address collision risk; lacks master/slave expansion capability. | Select when cost sensitivity outweighs arbitration complexity and 5 ns slower timing is acceptable. |
| IDT7143LA20JG | Same speed, package, and retention; slave-only variant with BUSY input (not output); no arbitration logic. | Used exclusively as width-expansion slave paired with 7133LA20JG; cannot operate stand-alone as master. | Choose only for 32-bit+ memory expansion where one 7133LA20JG coordinates multiple 7143LA20JG slaves. |
Compared with CY7C133-25JC and IDT7143LA20JG, the 7133LA20JG uniquely integrates arbitration logic and master BUSY output - enabling robust, scalable shared-memory systems without external arbitration components or timing margin penalties.
Availability
7133LA20JG is available at Aetrix Electronics and suitable for real-time digital signal processing, military avionics, and industrial PLC applications requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for 7133LA20JG 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 high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.
The 7133LA20JG belongs to IDT's dual-port SRAM product line, engineered for deterministic, contention-free shared-memory architectures in safety-critical and real-time embedded systems.
FAQ
What is the maximum operating temperature range for the 7133LA20JG?
The 7133LA20JG is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including access time, standby current, and data retention, making it suitable for deployment in factory automation, transportation, and outdoor infrastructure equipment where ambient thermal stress is significant. The 7133LA20JG maintains full functionality within this range without derating.
Does the 7133LA20JG support true dual-port simultaneous read/write operations?
Yes, the 7133LA20JG supports fully asynchronous, independent read and write operations on left and right ports - provided addresses do not collide. When both ports access the same memory location concurrently, its on-chip arbitration logic asserts BUSYL or BUSYR to stall the lower-priority port. The 7133LA20JG does not require external synchronization logic to manage port conflicts.
How does the 7133LA20JG implement byte-select write functionality?
The 7133LA20JG provides separate upper-byte (R/WLUB/R/WRUB) and lower-byte (R/WLLB/R/WRLB) write enable inputs for each port. Activating only one pair allows writing to either I/O0–I/O7 or I/O8–I/O15 without affecting the other byte - enabling efficient partial-word updates essential for protocol stack buffers and register-mapped peripherals in the 7133LA20JG.
What is the role of the BUSY pin on the 7133LA20JG, and how is it implemented?
On the 7133LA20JG, BUSYL and BUSYR are open-drain output pins that assert low during port contention to indicate memory access conflict. They require external pull-up resistors (typically 4.7 kΩ to VCC). Unlike the slave IDT7143LA20JG, the 7133LA20JG generates BUSY as an output - serving as the arbitration authority in MASTER/SLAVE configurations. This behavior is intrinsic to the 7133LA20JG silicon design.
Can the 7133LA20JG retain data at 2V, and under what conditions?
Yes, the 7133LA20JG guarantees data retention at VCC = 2.0 V minimum, with typical retention current of 100 µA and maximum of 4000 µA over the industrial temperature range. This mode activates automatically when CE is HIGH and VCC drops below operational threshold - preserving critical state information during power interruption without external refresh circuitry. The 7133LA20JG retains data indefinitely at 2V as long as temperature remains within spec.
7133LA20JG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-LCC (J-Lead)
- Packaging:
- Tube
- 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:
- 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:
- 68-PLCC (24.21x24.21)
7133LA20JG FAQ
1.How can I place an order for 7133LA20JG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7133LA20JG 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 7133LA20JG reliable?
The price and inventory of 7133LA20JG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7133LA20JG is usually 5 days.
3.What payment methods are accepted for 7133LA20JG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7133LA20JG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7133LA20JG?
7133LA20JG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7133LA20JG 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 7133LA20JG?
For technical support, including 7133LA20JG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7133LA20JG requirements.
6.How does Aetrix verify that 7133LA20JG is sourced from the original manufacturer or authorized distributors?
All 7133LA20JG 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 7133LA20JG meets industry standards.
7.What is the process for return or replacement of 7133LA20JG?
All 7133LA20JG units undergo pre-shipment inspection (PSI). If there is an issue with 7133LA20JG, 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 7133LA20JG part is unused and in its original packaging.
Return procedure for 7133LA20JG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7133LA20JG Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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