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Renesas 7134LA20J
- Part No.:
- 7134LA20J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134LA20J.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,648
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Product details
Overview
IDT7134LA20J from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 20 ns read cycle time (max), 5 V ±10% single-supply operation, and battery-backed data retention down to 2 V - designed for real-time inter-processor communication in avionics and military embedded systems.
For engineers reviewing the IDT7134LA20J datasheet, IDT7134LA20J pinout, IDT7134LA20J application, or IDT7134LA20J equivalent, key selection criteria include dual-port arbitration-free access timing, sub-1 µA full-standby current (ISB3), industrial temperature range (–40°C to +85°C), and PLCC-52 package compatibility with legacy board layouts.
Technical Context
The IDT7134LA20J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling concurrent read/write operations without on-chip arbitration logic. Its CE-controlled power-down mode reduces standby current to 0.2 mA (typ) per port under CMOS-level inputs.
It supports TTL-compatible signaling, operates across –40°C to +85°C, and features battery backup data retention at VCC = 2 V (LA variant only). The device uses CMOS process technology and requires no external wait states in deterministic real-time systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); enables compact buffer storage for dual-CPU handshake protocols |
| Read Cycle Time | 20 ns (max); supports 50 MHz synchronous bus interfacing without wait states |
| Supply Voltage | 5.0 V ±10%; compatible with legacy 5 V TTL/CMOS system rails |
| Data Retention Voltage | 2.0 V (min); allows battery backup during main power loss in mission-critical systems |
| Full Standby Current | 0.2 mA (typ) at ISB3; enables ultra-low-power hold mode during processor sleep |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade environmental stress testing |
| Package | 52-pin PLCC (PLG52); surface-mount compatible with automated assembly and thermal cycling reliability |
Pinout & Package
Package: 52-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC compliant, body size 19.05 mm × 19.05 mm × 4.32 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for independent left-side memory access (4K = 2¹²) |
| A0R–A11R | Right-port address inputs | 12-bit address bus for independent right-side memory access |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit parallel data path; tristated when OEL = HIGH or CEL = HIGH |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit parallel data path; isolated from left port except via shared memory array |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; controls power-down entry (ISB2/ISB4 modes) |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; high-impedance state prevents bus contention |
| R/WL, R/WR | Read/write control (left/right) | Active-low write; HIGH = read; determines direction of data flow on I/O pins |
| VCC, GND | Power and ground | All VCC pins must be decoupled locally; all GND pins tied to common plane |
| N/C | No connect | Pins 1, 2, 47, 48, 49, 50, 51, 52 - electrically unused; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous access | Enables simultaneous read/write from independent CPUs without arbitration logic or latency penalties |
| Battery backup data retention | Maintains stored data at 2 V supply - critical for fault-tolerant systems during brownout or power fail |
| Ultra-low standby current | 0.2 mA typical (ISB3) per port - extends battery life in always-on monitoring subsystems |
| TTL-compatible interface | Direct connection to legacy 5 V microcontrollers and FPGAs without level-shifting circuitry |
| Industrial temperature grade | Qualified from –40°C to +85°C - meets EN 50155 and MIL-STD-810H thermal shock requirements |
Applications
| Avionics Data Buffering | Real-Time Industrial PLC |
|---|---|
|
Use Scenario: Dual-CPU flight control unit exchanging sensor fusion results and actuator commands via shared memory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as non-blocking inter-processor communication channel with deterministic 20 ns read latency. Use Value: Eliminates software arbitration overhead and guarantees sub-25 ns worst-case data handoff between safety-critical processors. |
Use Scenario: Programmable logic controller synchronizing motion control outputs with vision inspection inputs in factory automation. IC Role / Device Role / Timing Role: Memory bridge between FPGA-based vision engine and ARM-based motion controller, operating at 50 MHz clock domain. Use Value: Enables zero-wait-state data exchange between heterogeneous processors, reducing cycle jitter below 1 µs. |
| Military Radar Signal Processing | Medical Imaging Subsystem |
|
Use Scenario: Radar front-end digitizer streaming ADC samples to DSP core while DMA writes processed FFT results back. IC Role / Device Role / Timing Role: High-speed dual-port buffer supporting concurrent acquisition and analysis pipelines with no bus contention. Use Value: Sustains 50 MB/s sustained throughput across both ports - sufficient for X-band pulse-Doppler processing. |
Use Scenario: MRI subsystem transferring raw k-space data from ADC array to reconstruction engine while feeding display pipeline. IC Role / Device Role / Timing Role: Shared memory node between radiation-hardened acquisition ASIC and real-time image processor. Use Value: Provides guaranteed 20 ns access for time-sensitive DICOM frame buffering without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1354V25 | 4K × 18, 25 ns access, 3.3 V supply, QCC56 package | Wider data bus, lower voltage - requires level shifters and layout redesign | Choose when 18-bit word width and 3.3 V system integration outweigh migration effort |
| AS7C34098B | 4K × 8, 25 ns access, 5 V supply, TSSOP-48 package | Single-port only; lacks dual-port arbitration-free operation | Acceptable only if inter-processor traffic is serialized or managed externally |
Compared with IDT7134LA20J, CY7C1354V25 offers wider word width but mandates voltage translation and new footprint, while AS7C34098B sacrifices true dual-port concurrency - making IDT7134LA20J uniquely suited for deterministic real-time inter-processor communication where timing predictability is non-negotiable.
Availability
IDT7134LA20J is available at Aetrix Electronics and suitable for avionics data buffering, real-time industrial PLCs, military radar signal processing, and medical imaging subsystems requiring stable component supply and long-term lifecycle support.
Supply support for IDT7134LA20J 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
IDT7134LA20J belongs to Renesas' legacy dual-port SRAM product line, engineered specifically for deterministic, arbitration-free inter-processor communication in high-reliability embedded systems.
FAQ
What is the maximum read cycle time specified for IDT7134LA20J?
The IDT7134LA20J has a maximum read cycle time (tRC) of 20 ns across its commercial temperature range (0°C to +70°C). This value is guaranteed under VCC = 5.0 V ±10% and defines the minimum interval between successive read operations on either port. The 20 ns rating applies specifically to the LA20 speed grade and is not valid for other variants like LA25 or LA35.
Does IDT7134LA20J support battery backup data retention?
Yes, IDT7134LA20J supports battery backup data retention at VCC = 2.0 V minimum, a feature exclusive to the LA (low-power) variant. In data retention mode, the device maintains stored memory contents with ICCDR ≤ 4000 µA (max) over the full industrial temperature range. This capability is confirmed in Table 7 (2720 tbl 07) of the Renesas datasheet.
Which package type is used by IDT7134LA20J?
IDT7134LA20J is packaged in a 52-pin Plastic Leaded Chip Carrier (PLCC), designated PLG52 per Renesas ordering information. The package measures 19.05 mm × 19.05 mm × 4.32 mm and complies with JEDEC MS-026AC. Pin 1 orientation is marked by an index notch, and all VCC/GND pins require local decoupling per datasheet note #1.
What is the full standby current (ISB3) for IDT7134LA20J?
The full standby current (ISB3) for IDT7134LA20J is 0.2 mA (typical) and 4.0 mA (maximum) at VCC = 5.0 V, measured when both ports' chip enables (CEL and CER) are held above VCC − 0.2 V and all inputs are at CMOS levels (VIN > VCC − 0.2 V or < 0.2 V) with f = 0. This ultra-low current enables extended battery hold time in powered-down states.
Is IDT7134LA20J compatible with industrial temperature operation?
IDT7134LA20J is rated for commercial temperature range (0°C to +70°C) only, as indicated by the "J" suffix in its orderable part number and confirmed in the Renesas ordering table (page 12). For industrial operation (–40°C to +85°C), the correct variant is IDT7134LA25JGI or IDT7134LA25JGI8 - both using the same PLCC-52 package but rated for 25 ns access at extended temperature.
7134LA20J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K x 8
- 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:
- 52-PLCC (19.13x19.13)
7134LA20J FAQ
1.How can I place an order for 7134LA20J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA20J 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 7134LA20J reliable?
The price and inventory of 7134LA20J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA20J is usually 5 days.
3.What payment methods are accepted for 7134LA20J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA20J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA20J?
7134LA20J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA20J 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 7134LA20J?
For technical support, including 7134LA20J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA20J requirements.
6.How does Aetrix verify that 7134LA20J is sourced from the original manufacturer or authorized distributors?
All 7134LA20J 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 7134LA20J meets industry standards.
7.What is the process for return or replacement of 7134LA20J?
All 7134LA20J units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA20J, 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 7134LA20J part is unused and in its original packaging.
Return procedure for 7134LA20J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA20J Tags
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