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Renesas 7143LA25G
- Part No.:
- 7143LA25G
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7143LA25G.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,149
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Product details
Overview
7143LA25G 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, TTL-compatible 5V ±10% operation, and 1 µA typical standby current - used in real-time avionics data buffering and industrial motion controller memory arbitration.
For engineers reviewing the 7143LA25G datasheet, 7143LA25G pinout, 7143LA25G application, or 7143LA25G equivalent, this page delivers verified timing parameters, BUSY-input behavior, battery-retention capability at 2V, and exact package mapping for 68-pin PLCC, PGA, flatpack, and 100-pin TQFP footprints.
Technical Context
The 7143LA25G 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 and does not drive BUSY - unlike the IDT7133 - making it strictly dependent on external arbitration control.
It supports separate upper/lower byte write enables per port (R/WLUB/R/WLLB and R/WRUB/R/WRLB), fully asynchronous reads/writes, and automatic power-down via CE pins. Data retention at 2V is guaranteed, with 100 µA typical ICCDR under VCC = 2V and CMOS-level standby conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total, organized as 2048 words × 16-bit wide) |
| Access Time | 25 ns max read cycle time - defines minimum clock period for synchronous interface or maximum bus frequency in asynchronous systems |
| Supply Voltage | 5.0 V ±10% - requires stable 4.5–5.5 V rail; not compatible with 3.3 V or mixed-voltage domains |
| Standby Current | 1 µA typical (ISB3, both ports in full CMOS standby) - enables ultra-low-power battery backup operation |
| Data Retention | 2 V minimum VCC - retains data during brownout or backup-battery mode without refresh |
| Operating Temp | −40°C to +85°C (Industrial grade) - validated across full range, not commercial-only |
| I/O Interface | TTL-compatible inputs/outputs - interfaces directly with 5V microcontrollers, FPGAs, and legacy logic without level shifters |
Pinout & Package
7143LA25G is available in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100) packages. All variants share identical pin functions and dual-port signal mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; drives port into low-power standby when HIGH |
| R/WLUB / R/WRUB | Upper Byte Write Enable | Controls write to I/O8–I/O15 on respective port; independent of lower byte |
| R/WLLB / R/WRLB | Lower Byte Write Enable | Controls write to I/O0–I/O7 on respective port; enables partial-word writes |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O pins when HIGH; allows shared bus operation |
| BUSYL / BUSYR | Busy Input (SLAVE only) | Active-low write-inhibit signal - must be driven by MASTER's BUSY output |
| A0L–A10L / A0R–A10R | Address Inputs | 11-bit address per port (2048 locations); no internal address latching |
| I/O0L–I/O15L / I/O0R–I/O15R | Bi-directional Data | 16-bit parallel I/O per port; high-impedance when OE or CE inactive |
| VCC (×2) / GND (×2) | Power & Ground | Both VCC and GND pins must be connected - single-point connection invalidates operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ports | Enables simultaneous CPU and DSP access to same memory without software arbitration overhead |
| SLAVE-only BUSY input | Eliminates need for external logic when paired with IDT7133 MASTER - simplifies 32-bit+ width expansion |
| Byte-selectable write control | Permits 8-bit updates without disturbing adjacent bytes - critical for protocol register overlays |
| 2V data retention | Preserves memory contents during main power loss using coin-cell backup - validated at −40°C to +85°C |
| Low active power | 1050 mW typical active power (vs. 1150 mW for SA version) - reduces thermal load in dense PCB layouts |
Applications
| Avionics Data Buffering | Industrial Motion Controller |
|---|---|
Use Scenario: Real-time acquisition of sensor telemetry (IMU, GPS, pressure) and buffering for periodic downlink transmission. IC Role / Device Role / Timing Role: SLAVE dual-port RAM synchronizing flight computer writes with ground-station readout via dedicated port arbitration. Use Value: Eliminates CPU polling delays using hardware BUSY handshake - ensures deterministic 25 ns read response under contention. | Use Scenario: Coordinating multi-axis servo position registers between FPGA motion sequencer and ARM-based HMI processor. IC Role / Device Role / Timing Role: SLAVE memory enabling concurrent register update (FPGA port) and status readback (ARM port) without lock-step synchronization. Use Value: 2K × 16 capacity accommodates 128-axis position/velocity/error registers; byte-write enables per-axis parameter updates. |
| Medical Imaging Pipeline | Military Radar Signal Processing |
Use Scenario: Staging raw ultrasound frame data between ADC capture engine and DSP-based beamforming unit. IC Role / Device Role / Timing Role: SLAVE buffer decoupling high-speed serial ADC interface (left port) from parallel DSP memory bus (right port). Use Value: Asynchronous operation prevents pipeline stalls; 25 ns access sustains >40 MSPS pixel throughput with zero wait states. | Use Scenario: Storing intermediate FFT coefficients in electronic warfare receivers where multiple processors access shared spectral data. IC Role / Device Role / Timing Role: SLAVE node in multi-chip 64-bit-wide dual-port array, receiving BUSY arbitration from central IDT7133 MASTER. Use Value: Industrial temp rating (−40°C to +85°C) and MIL-PRF-38535-compliant variants ensure field reliability in airborne EW pods. |
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 | 2K × 16, 25 ns, but uses active-HIGH BUSY output and includes on-chip arbitration - MASTER-only function | Cannot replace 7143LA25G in SLAVE role; requires redesign of BUSY routing and arbitration topology | Select only if redesigning entire dual-port system around Cypress architecture and abandoning IDT MASTER/SLAVE hierarchy |
| IDT7133LA25G | Same speed, package, and LA power profile, but implements BUSY as open-drain output and includes on-chip arbitration logic | Functions as MASTER - drives BUSY signal; cannot accept external BUSY input like 7143LA25G | Use as direct companion in same system: pair IDT7133LA25G (MASTER) with 7143LA25G (SLAVE) for 32-bit+ expansion |
Compared with CY7C133-25JC and IDT7133LA25G, the 7143LA25G is uniquely optimized as a passive SLAVE - its BUSY input behavior, absence of arbitration logic, and pin-for-pin compatibility with IDT7133 make it irreplaceable in existing MASTER/SLAVE designs requiring seamless width scaling without added logic.
Availability
7143LA25G is available at Aetrix Electronics and suitable for avionics data buffering, industrial motion control, medical imaging pipelines, and military radar signal processing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7143LA25G 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 signal-path solutions, now part of Renesas Electronics.
The IDT7133/7143 family was designed specifically for high-reliability dual-ported memory expansion in real-time embedded systems where deterministic latency, hardware arbitration, and battery-backed retention are mandatory - not general-purpose SRAM.
FAQ
What is the role of BUSY pins on the 7143LA25G?
The BUSYL and BUSYR pins on the 7143LA25G are dedicated inputs - not outputs - used exclusively to receive BUSY signals from a MASTER IDT7133 device. When asserted LOW, they inhibit write operations on the corresponding port. Unlike the IDT7133, the 7143LA25G contains no arbitration logic and never drives BUSY. Pull-up resistors are not required on these pins.
Can 7143LA25G operate standalone without a MASTER device?
Yes, the 7143LA25G can operate as a standalone 2K × 16 dual-port SRAM without a MASTER, but BUSY functionality must be disabled by tying BUSYL and BUSYR HIGH. In this configuration, it behaves as a standard dual-port RAM with no hardware arbitration - contention resolution must be handled externally in software or logic.
Does 7143LA25G support 3.3V I/O interfacing?
No, the 7143LA25G is strictly 5V TTL-compatible with VIH(min) = 2.2V and VIL(max) = 0.8V. It does not support 3.3V signaling levels. Interfacing with 3.3V controllers requires level-shifting circuitry on all address, control, and data lines - no internal voltage translation is provided.
What is the significance of "LA" in 7143LA25G?
The "LA" suffix denotes Low-power Active/Standby operation: 1050 mW typical active power and 1 µA typical full standby current (ISB3), enabling battery backup with 2V data retention. This contrasts with the "SA" variant (e.g., 7143SA25G), which draws 1150 mW active and 5 µA standby - higher power but identical timing and logic.
Which packages are available for 7143LA25G?
The 7143LA25G 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). Pin functions and electrical characteristics are identical across all packages; mechanical dimensions and thermal profiles differ per package type.
7143LA25G 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)
7143LA25G FAQ
1.How can I place an order for 7143LA25G through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143LA25G 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 7143LA25G reliable?
The price and inventory of 7143LA25G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143LA25G is usually 5 days.
3.What payment methods are accepted for 7143LA25G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143LA25G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143LA25G?
7143LA25G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143LA25G 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 7143LA25G?
For technical support, including 7143LA25G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143LA25G requirements.
6.How does Aetrix verify that 7143LA25G is sourced from the original manufacturer or authorized distributors?
All 7143LA25G 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 7143LA25G meets industry standards.
7.What is the process for return or replacement of 7143LA25G?
All 7143LA25G units undergo pre-shipment inspection (PSI). If there is an issue with 7143LA25G, 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 7143LA25G part is unused and in its original packaging.
Return procedure for 7143LA25G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143LA25G 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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M24C02-FMC6TG
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