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Renesas 7134SA45JI8
- Part No.:
- 7134SA45JI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
7134SA45JI8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
IDT7134SA45JI8 from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent asynchronous left/right ports, 45 ns read cycle time (max), TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables real-time data exchange between two processors or bus masters in embedded control, digital signal processing, and video frame buffering systems.
For engineers reviewing the 7134SA45JI8 datasheet, 7134SA45JI8 pinout, 7134SA45JI8 application, or 7134SA45JI8 equivalent, key selection criteria include dual-port arbitration-free access, 45 ns timing compliance, PLCC-52 package compatibility, and low-power standby current (40 mA typical ISB1) under industrial thermal conditions.
Technical Context
The 7134SA45JI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-no on-chip arbitration logic required. Each port features independent CE, OE, R/W, and address decoding, enabling concurrent read/write operations when accessing distinct memory locations.
It supports external contention management via user-defined arbitration and includes automatic power-down mode triggered by CE high. The device uses CMOS process technology and operates at 5 V ±10%, delivering 700 mW typical active power and 40 mA typical ISB1 standby current across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 (32 Kbit), dual-port SRAM with independent left/right address/data/control interfaces |
| Read Cycle Time (tRC) | 45 ns max - defines minimum interval between successive reads on same port |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; no auxiliary supplies needed |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Standby Current (ISB1) | 40 mA typical - both ports disabled with TTL-level CE inputs; critical for low-idle power budgeting |
| Package | 52-pin PLCC (PLG52) - surface-mount compatible with standard reflow profiles and board-level test access |
| Input/Output Compatibility | TTL-level - direct interface with legacy microcontrollers, FPGAs, and ASICs without level-shifting |
Pinout & Package
7134SA45JI8 is packaged in a 52-pin Plastic Leaded Chip Carrier (PLCC, code PLG52), body size ≈ 0.75 in × 0.75 in × 0.17 in, with J-lead configuration and pin 1 index mark. All VCC pins must be connected to 5 V supply; all GND pins to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; latched on CEL assertion |
| A0R–A11R | Right-port address inputs | 12-bit address bus for right-side memory access; fully independent of left port |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; direction controlled by R/WL; high-impedance when OEL = high |
| I/O0R–I/O7R | Right-port bidirectional data | 8-bit data path; direction controlled by R/WR; isolated from left-port I/O |
| CEL, CER | Chip enable (left/right) | Active-low enables respective port; drives internal circuitry into low-power standby when high |
| OEL, OER | Output enable (left/right) | Active-low enables output drivers; sets I/O pins to high-Z when high |
| R/WL, R/WR | Read/write control (left/right) | Active-low selects write mode; high enables read; controls data direction per port |
| VCC, GND | Power and ground | Multiple VCC/GND pins ensure stable supply distribution and low-noise operation |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized access from two system domains without clock domain crossing or wait states |
| 45 ns maximum read cycle time | Supports 22.2 MHz sustained memory bandwidth per port in real-time control loops and DSP pipelines |
| Industrial temperature qualification (–40°C to +85°C) | Validated for deployment in factory automation, motor drives, and outdoor communications equipment |
| Low standby power (40 mA typical ISB1) | Reduces system-level idle power consumption in battery-backed or energy-sensitive applications |
| 52-pin PLCC package (PLG52) | Provides robust mechanical mounting, thermal dissipation, and compatibility with automated SMT assembly |
Applications
| Industrial Motion Control | Digital Signal Processing Buffer |
|---|---|
|
Use Scenario: Real-time coordination between motion controller CPU and FPGA-based servo driver. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared register bank and command queue, allowing CPU to write new trajectory points while FPGA reads and executes them concurrently. Use Value: Eliminates inter-processor handshake delays; 45 ns tRC ensures sub-microsecond data handoff for 10 kHz servo update rates. |
Use Scenario: Frame buffer between ADC interface and FFT accelerator in spectrum analyzer. IC Role / Device Role / Timing Role: Left port accepts streaming 8-bit samples from ADC; right port feeds burst-mode FFT engine with aligned 4K-word blocks. Use Value: Asynchronous ports prevent pipeline stalls during FFT computation; PLCC-52 supports dense PCB layout near analog front-end. |
| Video Overlay Engine | Legacy Bus Bridge Interface |
|
Use Scenario: Simultaneous read of background frame and write of alpha-blended overlay pixels in broadcast graphics system. IC Role / Device Role / Timing Role: Right port reads display memory; left port writes updated pixel data from graphics processor - no arbitration logic required. Use Value: 4K × 8 capacity matches common line buffers; 5 V TTL compatibility integrates directly with legacy video DACs and timing controllers. |
Use Scenario: Interfacing an 8-bit microcontroller (Z80) to a 16-bit peripheral bus in retro-computing restoration. IC Role / Device Role / Timing Role: Acts as transparent data bridge: Z80 writes to left port; peripheral reads from right port using its native timing. Use Value: No glue logic needed; 45 ns tRC meets Z80's 250 ns bus cycle; industrial temp rating ensures reliability in vintage chassis environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C135-45JC | 45 ns tRC, 5 V, 4K × 8, 52-pin PLCC - identical speed and organization but Cypress-manufactured; higher ISB1 (50 mA typ) | Same industrial temp grade and PLCC footprint; requires validation of OE timing margins in high-noise environments | Preferred where Cypress supply chain continuity is prioritized; verify tAOE (25 ns max) against host controller setup time |
| AS7C34096A-45PCN | 45 ns tRC, 5 V, 4K × 8, 48-pin DIP - same speed but different package; lacks CER/OER separation (shared OE) | Suitable for prototyping or through-hole designs; not drop-in for PLCC-52 layouts; no dedicated right-port OE | Select only for breadboard evaluation or legacy DIP-based systems; requires PCB redesign for production use |
Compared with CY7C135-45JC and AS7C34096A-45PCN, the 7134SA45JI8 offers lower standby current (40 mA vs. 50 mA), true independent OE per port, and Renesas' industrial-grade qualification - making it optimal for thermally constrained, high-reliability dual-bus systems.
Availability
7134SA45JI8 is available at Aetrix Electronics and suitable for industrial motion control, digital signal processing buffer, video overlay engine, and legacy bus bridge interface applications requiring stable component supply across extended product lifecycles.
Supply support for 7134SA45JI8 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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT7134 family was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to address deterministic, arbitration-free memory sharing in real-time embedded systems - particularly where dual-CPU coordination, video buffering, or legacy bus bridging is required.
FAQ
What is the maximum operating temperature range for the 7134SA45JI8?
The 7134SA45JI8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per manufacturer specifications and applies across all DC and AC electrical parameters including tRC = 45 ns max, ISB1 = 40 mA typical, and VCC = 5.0 V ±10%. It is not qualified for military (–55°C to +125°C) or commercial (0°C to +70°C) grades.
Does the 7134SA45JI8 support battery backup data retention?
No, the 7134SA45JI8 does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., 7134LA45JI8), which specifies VDR ≥ 2.0 V and ICCDR ≤ 4000 µA. The SA suffix denotes standard power version with no data retention capability below VCC = 4.5 V.
What package type is used for the 7134SA45JI8?
The 7134SA45JI8 uses a 52-pin Plastic Leaded Chip Carrier (PLCC) package, designated PLG52 in Renesas documentation. Its dimensions are approximately 0.75 in × 0.75 in × 0.17 in, with J-leads and pin 1 index marking. It is not available in DIP, LCC, or Flatpack variants under this specific orderable part number.
Can both ports of the 7134SA45JI8 perform simultaneous read operations?
Yes, the 7134SA45JI8 supports fully independent simultaneous read operations on left and right ports - provided addresses do not conflict. Each port has dedicated OE (OEL/OER), CE (CEL/CER), and address lines, enabling concurrent access without internal arbitration. Data integrity is the user's responsibility if both ports access the same memory location simultaneously.
Is the 7134SA45JI8 pin-compatible with other speed grades in the IDT7134SA family?
Yes, all IDT7134SA variants in the PLCC-52 package (e.g., 7134SA20JI8, 7134SA55JI8) share identical pinout and footprint. Differences are limited to AC timing parameters (e.g., tRC = 20 ns, 45 ns, or 55 ns) and corresponding DC current specs - no PCB redesign is needed when upgrading or downgrading speed grades within the same package and temperature grade.
7134SA45JI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
7134SA45JI8 FAQ
1.How can I place an order for 7134SA45JI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA45JI8 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 7134SA45JI8 reliable?
The price and inventory of 7134SA45JI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA45JI8 is usually 5 days.
3.What payment methods are accepted for 7134SA45JI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA45JI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA45JI8?
7134SA45JI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA45JI8 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 7134SA45JI8?
For technical support, including 7134SA45JI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA45JI8 requirements.
6.How does Aetrix verify that 7134SA45JI8 is sourced from the original manufacturer or authorized distributors?
All 7134SA45JI8 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 7134SA45JI8 meets industry standards.
7.What is the process for return or replacement of 7134SA45JI8?
All 7134SA45JI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA45JI8, 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 7134SA45JI8 part is unused and in its original packaging.
Return procedure for 7134SA45JI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134SA45JI8 Tags
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