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Renesas 7143SA25G
- Part No.:
- 7143SA25G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7143SA25G.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,870
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Product details
Overview
7143SA25G from IDT is a high-speed 2K × 16 dual-port static RAM configured as a SLAVE device in MASTER/SLAVE memory expansion systems, supporting independent asynchronous access on left and right ports with 25 ns max read cycle time (commercial & industrial temperature range), TTL-compatible 5V ±10% operation, and battery backup data retention down to 2V. It enables 32-bit-or-wider word-width systems without external arbitration logic.
For engineers reviewing the 7143SA25G datasheet, 7143SA25G pinout, 7143SA25G application, or 7143SA25G equivalent, this page delivers verified timing parameters, BUSY-input-controlled write-inhibit behavior, dual-port DC/AC electrical specs, package-validated pin mapping for 68-pin PLCC/PGA/Flatpack and 100-pin TQFP, and real-world use cases in telecom switching and real-time control systems.
Technical Context
The 7143SA25G operates as a SLAVE dual-port SRAM with BUSY input (not output), requiring external BUSY signal from a MASTER IDT7133 to gate write operations during address contention. It lacks on-chip arbitration logic - all port arbitration is delegated to the MASTER device.
It supports fully asynchronous dual-port reads/writes, separate upper/lower byte write enables per port (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and automatic power-down via chip enable (CE) with TTL-level standby control. Data retention at 2V is guaranteed only for LA variants; SA versions specify active/standby current but not retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32,768 bits total); supports independent 16-bit access on left and right ports |
| Access Time | 25 ns max read cycle time (tRC) - defines minimum clock-to-data interval for synchronous interface design |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); requires both VCC pins connected for reliable operation |
| Operating Temp | –40°C to +85°C (industrial grade); validated across full range for timing and leakage specs |
| Dynamic Current | 230 mA typ. (both ports active, f = fMAX); determines thermal budget and regulator sizing |
| Standby Current | 25 mA max (ISB1, both CE high, TTL inputs); critical for low-power sleep-mode system design |
| Input Leakage | ≤5 µA (|ILI|, VCC = 5.5 V); ensures compatibility with high-impedance bus-hold or weak pull-up networks |
Pinout & Package
7143SA25G is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin Flatpack (FP68), and 100-pin TQFP (PNG100). All variants share identical pin functions and dual-port symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low port selection; drives port into low-power standby when high |
| R/WLUB / R/WRUB | Upper Byte Write Enable (L/R) | Controls write to I/O8–I/O15; enables byte-granular writes without affecting lower byte |
| R/WLLB / R/WRLB | Lower Byte Write Enable (L/R) | Controls write to I/O0–I/O7; allows independent 8-bit updates per port |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O bus when high; required for shared-bus multiplexing |
| BUSYL / BUSYR | Busy Input (Left / Right) | SLAVE-only function: gates write cycles when asserted low; must be driven by MASTER's open-drain BUSY output |
| A0L–A10L / A0R–A10R | Address Inputs (L/R) | 11-bit address per port (211 = 2K locations); no internal address latching |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (L/R) | Bidirectional 16-bit data bus per port; high-impedance when CE or OE high |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables concurrent CPU and DSP access to shared memory without software locks or polling |
| MASTER/SLAVE architecture | Eliminates "busy lock-out" in width-expanded systems by centralizing arbitration in one MASTER (IDT7133) |
| Separate byte-write controls | Permits atomic 8-bit updates to upper/lower halves - essential for mixed-data-size protocols |
| TTL-compatible 5V interface | Direct connection to legacy microcontrollers and FPGAs without level-shifting circuitry |
| Low-power standby mode | 25 mA max ISB1 current enables energy-efficient idle states in telecom line cards and industrial PLCs |
Applications
| Telecom Switching Fabric | Real-Time Motion Control |
|---|---|
|
Use Scenario: Dual-CPU packet buffering in TDM switch fabric where one CPU handles call setup and the other manages real-time voice path routing. IC Role / Device Role / Timing Role: SLAVE 7143SA25G provides second 16-bit port in 32-bit-wide memory bank, synchronized to MASTER IDT7133 for contention-free writes during voice sample bursts. Use Value: 25 ns tRC enables sub-40 ns memory latency - meeting strict jitter budgets for E1/T1 frame alignment. |
Use Scenario: Coordinated servo motor control in CNC machine tool, where motion controller writes trajectory data while FPGA reads and executes position updates. IC Role / Device Role / Timing Role: 7143SA25G acts as SLAVE in dual-port buffer between ARM-based motion planner and Xilinx FPGA interpolator, using BUSYR to stall writes during FPGA read cycles. Use Value: Separate R/WLLB/R/WLUB enables simultaneous update of velocity (lower byte) and acceleration (upper byte) fields without bus contention. |
| Avionics Data Logger | Industrial PLC I/O Mapping |
|
Use Scenario: Redundant flight data recorder capturing sensor streams from multiple ADCs while host processor archives logs to flash. IC Role / Device Role / Timing Role: 7143SA25G serves as SLAVE in 64-bit memory expansion (four 7143SA25G + one 7133SA25G), with BUSY inputs preventing corrupted writes during simultaneous capture and archive. Use Value: Industrial temp rating (–40°C to +85°C) and 5V tolerance ensure operation across aircraft cabin and avionics bay thermal zones. |
Use Scenario: Modular PLC backplane where main CPU configures I/O modules via shared memory, while local module MCU reads/writes status registers. IC Role / Device Role / Timing Role: 7143SA25G implements SLAVE-side memory-mapped register space; BUSYL input prevents CPU overwrites during module-initiated diagnostics. Use Value: Pin-identical replacement for legacy 7143LA variants allows drop-in upgrade to higher-speed SA grade without PCB revision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7143SA35G | Slower 35 ns max tRC; same pinout, voltage, and temperature specs | Suitable for cost-sensitive designs where 25 ns timing margin is unnecessary | Select when system clock rate permits relaxed timing and BOM cost reduction is prioritized |
| Cypress CY7C024AV-25AXC | 2K × 16, 25 ns, but features integrated busy arbitration and no MASTER/SLAVE dependency | Eliminates need for external MASTER IC but requires redesign of BUSY routing and arbitration logic | Choose when simplifying system architecture outweighs migration effort and existing IDT ecosystem leverage |
Compared with IDT7143SA35G, the 7143SA25G delivers 10 ns faster access for tighter real-time loops; compared with CY7C024AV-25AXC, it retains full compatibility with established IDT MASTER/SLAVE board layouts but shifts arbitration responsibility to the system level.
Availability
7143SA25G is available at Aetrix Electronics and suitable for telecom switching fabric, real-time motion control, and avionics data logging requiring stable component supply across industrial temperature grades and long-lifecycle production programs.
Supply support for 7143SA25G 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, and RF solutions, now part of Renesas Electronics since 2019.
The IDT7133/7143 family was designed for high-reliability dual-ported memory applications in telecom infrastructure, industrial automation, and defense systems requiring deterministic arbitration and seamless width expansion.
FAQ
What is the role of BUSY pins on the 7143SA25G?
The BUSYL and BUSYR pins on the 7143SA25G are inputs-not outputs-used exclusively to gate write operations during address contention. When asserted low by a MASTER IDT7133, they internally inhibit writes to the corresponding port. This SLAVE-only behavior eliminates the need for external arbitration logic in width-expanded systems and is fundamental to the IDT MASTER/SLAVE architecture.
Does the 7143SA25G support battery backup data retention?
No-the 7143SA25G does not support battery backup data retention. That feature is exclusive to LA variants (e.g., 7143LA25G), which guarantee data retention at VCC = 2.0 V. The "SA" suffix denotes standard power grade with typical active current of 230 mA and standby current of 25 mA, optimized for performance rather than ultra-low-voltage holdover.
Can the 7143SA25G operate as a standalone dual-port RAM without a MASTER device?
Yes-the 7143SA25G can operate independently as a standalone 2K × 16 dual-port SRAM. Its BUSY pins may be tied HIGH (via pull-up resistors) to disable write-inhibit functionality, enabling full asynchronous read/write on both ports. However, in shared-address scenarios, external arbitration or software coordination becomes necessary to prevent data corruption.
Which packages are available for the 7143SA25G?
The 7143SA25G is offered in four industry-standard packages: 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin Flatpack (FP68), and 100-pin TQFP (PNG100). All share identical pin functions and timing specifications; mechanical dimensions and thermal profiles differ per package type, with TQFP offering highest pin density and PGA providing best thermal dissipation for high-current operation.
How does the 7143SA25G differ from the IDT7133SA25G in system implementation?
The 7143SA25G is a SLAVE device with BUSY inputs and no internal arbitration logic, while the IDT7133SA25G is a MASTER with BUSY outputs and on-chip port arbitration. In width-expanded systems, only one IDT7133SA25G is used to generate BUSY signals; multiple 7143SA25G units receive those signals to synchronize writes. This division eliminates "busy lock-out" and reduces component count versus using all-MASTER configurations.
7143SA25G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tray
- 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:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7143SA25G FAQ
1.How can I place an order for 7143SA25G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143SA25G 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 7143SA25G reliable?
The price and inventory of 7143SA25G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143SA25G is usually 5 days.
3.What payment methods are accepted for 7143SA25G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143SA25G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143SA25G?
7143SA25G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143SA25G 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 7143SA25G?
For technical support, including 7143SA25G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143SA25G requirements.
6.How does Aetrix verify that 7143SA25G is sourced from the original manufacturer or authorized distributors?
All 7143SA25G 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 7143SA25G meets industry standards.
7.What is the process for return or replacement of 7143SA25G?
All 7143SA25G units undergo pre-shipment inspection (PSI). If there is an issue with 7143SA25G, 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 7143SA25G part is unused and in its original packaging.
Return procedure for 7143SA25G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143SA25G Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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