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Renesas 7143LA20PF8
- Part No.:
- 7143LA20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7143LA20PF8.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,377
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Product details
Overview
7143LA20PF8 from IDT is a low-power, 2K × 16-bit dual-port static RAM designed as a SLAVE device in MASTER/SLAVE memory expansion systems. It supports fully asynchronous read/write access on independent left and right ports, features 20 ns maximum read cycle time (commercial grade), 1 mW typical standby power, and 2 V battery backup data retention. It is used in real-time embedded systems requiring concurrent CPU/DSP access to shared memory - such as radar signal processors and industrial motion controllers.
For engineers reviewing the 7143LA20PF8 datasheet, 7143LA20PF8 pinout, 7143LA20PF8 application, or 7143LA20PF8 equivalent, key selection criteria include its SLAVE-only BUSY input behavior, absence of on-chip arbitration logic, identical 68-pin PLCC pinout with IDT7133LA20PF8, and compatibility with 5 V ±10% supply and industrial temperature range (–40°C to +85°C).
Technical Context
The 7143LA20PF8 operates as a SLAVE dual-port SRAM with no internal port arbitration logic - unlike the MASTER IDT7133 - and relies entirely on external BUSY signaling for contention resolution. Its BUSY pin functions solely as an input to inhibit writes during address conflicts, eliminating the need for pull-up resistors required on IDT7133's open-drain BUSY output.
It supports byte-level write control (upper/lower) per port, TTL-compatible I/O, and automatic power-down via chip enable (CE). The device uses CMOS high-performance technology and achieves 1050 mW typical active power consumption while retaining data at 2 V, enabling battery-backed operation in fail-safe systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit total); provides 16-bit wide data path per port for parallel processor interfacing. |
| Access Time (tRC) | 20 ns max (commercial grade); enables direct interface with 50 MHz bus systems without wait states. |
| Supply Voltage | 5.0 V ±10%; compatible with standard TTL logic families and legacy 5 V system rails. |
| Standby Current | 1 mA typ. (ISB3, full CMOS standby); supports ultra-low-power hold mode during system sleep. |
| Data Retention | 2 V minimum VCC; retains memory contents during main power loss using backup battery. |
| Operating Temp | –40°C to +85°C (industrial grade); qualified for deployment in factory automation and transportation electronics. |
| Package | 68-pin PLCC (PLG68); surface-mount compatible with automated assembly and thermal cycling reliability. |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in. Dual-row, J-lead package with pin 1 index notch at top-left corner (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low port selection; controls power-down state per port independently. |
| R/WLUB / R/WRUB | Upper Byte Write Enable (Left / Right) | Enables write to I/O8–I/O15 only; allows partial-word updates without disturbing lower byte. |
| R/WLLB / R/WRLB | Lower Byte Write Enable (Left / Right) | Enables write to I/O0–I/O7 only; supports byte-granular memory management. |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O pins when deasserted; prevents bus contention during shared-memory arbitration. |
| BUSYL / BUSYR | Busy Input (Left / Right) | SLAVE-only function: asserts write-inhibit when driven LOW by MASTER's BUSY output. |
| A0L–A10L / A0R–A10R | Address Inputs (Left / Right) | 11-bit address bus per port; decodes 2K (2048) locations across 16-bit data width. |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (Left / Right) | Bidirectional 16-bit data path per port; supports simultaneous read/write on separate ports. |
| VCC (×2), GND (×2) | Power & Ground | Dual VCC/GND pairs ensure stable voltage distribution and reduce ground bounce in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| SLAVE-only BUSY interface | Eliminates need for external arbitration logic and pull-up resistors; simplifies MASTER/SLAVE width-expansion design. |
| Byte-selectable write control | Independent upper/lower byte enables per port allow atomic 8-bit updates without read-modify-write cycles. |
| 2 V data retention | Enables seamless transition to battery backup during main power failure - critical for avionics and medical data buffers. |
| Low-power LA variant | 1050 mW active / 1 mW standby reduces thermal load in dense PCB layouts and extends battery life in portable systems. |
| Industrial temperature rating | Validated operation from –40°C to +85°C ensures reliability in uncontrolled environments like motor drives and outdoor base stations. |
Applications
| Radar Signal Processing | Digital Motion Control |
|---|---|
|
Use Scenario: Real-time FFT processing where DSP and FPGA concurrently access shared coefficient and sample buffers. IC Role / Device Role / Timing Role: SLAVE dual-port RAM providing synchronized 16-bit data exchange between processing cores with hardware BUSY arbitration. Use Value: Eliminates software locks and polling overhead; enables deterministic sub-20 ns memory access latency across heterogeneous processors. |
Use Scenario: Multi-axis servo controller with dedicated microcontroller per axis sharing trajectory tables and status registers. IC Role / Device Role / Timing Role: Shared memory node enabling lock-free inter-axis coordination via dual-port read/write isolation. Use Value: Sustains 50 kHz position update rate with zero-cycle bus turnaround; avoids jitter introduced by bus arbitration protocols. |
| Avionics Data Recorder | Industrial PLC Backplane |
|
Use Scenario: Crash-protected flight data recorder maintaining volatile telemetry in RAM until safe power-down or battery switchover. IC Role / Device Role / Timing Role: Battery-backed SLAVE RAM storing sensor streams with guaranteed 2 V retention during main power loss. Use Value: Meets DO-160 Section 22 lightning-induced transient immunity requirements via low-impedance 2 V hold circuitry. |
Use Scenario: Modular PLC backplane where CPU module and I/O modules exchange process variables and diagnostics over shared memory. IC Role / Device Role / Timing Role: Width-expanded 32-bit memory bank built from IDT7133/7143 pairs, using BUSY-controlled write synchronization. Use Value: Enables deterministic 100 µs I/O scan times without Ethernet or fieldbus latency; supports SIL-2 functional safety architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Cypress CY7C1370D-200BAXI | 256K × 18, 200 MHz QDR interface; requires external clock and differential signaling. | Targeted at high-bandwidth networking ASIC interfaces, not asynchronous processor coherency. | Choose only if migrating to synchronous, clocked memory architecture with >100 MHz throughput needs. |
| IDT7133LA20PF8 | MASTER variant with on-chip arbitration logic and open-drain BUSY output; identical speed/package. | Required when implementing single-chip dual-port solution or when BUSY-driven interrupt generation is needed. | Select when standalone dual-port functionality or hardware BUSY flagging (e.g., for CPU interrupt) is required. |
Compared with CY7C1370D-200BAXI, the 7143LA20PF8 offers true asynchronous operation and simpler board-level integration; compared with IDT7133LA20PF8, it eliminates arbitration complexity and reduces BOM count in multi-chip width-expansion designs.
Availability
7143LA20PF8 is available at Aetrix Electronics and suitable for radar signal processing, digital motion control, and avionics data recorders requiring stable component supply across extended product lifecycles.
Supply support for 7143LA20PF8 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.
The IDT7133/7143 family was engineered for real-time embedded systems demanding concurrent, deterministic memory access - particularly in defense, industrial automation, and test equipment where bus contention must be resolved in hardware.
FAQ
What is the role of BUSY pins on the 7143LA20PF8?
The BUSY pins (BUSYL and BUSYR) on the 7143LA20PF8 function exclusively as inputs - unlike the IDT7133's open-drain outputs. When driven LOW by a MASTER device (e.g., IDT7133LA20PF8), they inhibit writes on the corresponding port. This SLAVE-only behavior eliminates external pull-up resistors and simplifies arbitration in width-expanded memory systems. The 7143LA20PF8 itself does not generate BUSY signals.
Can the 7143LA20PF8 operate as a standalone dual-port RAM without a MASTER device?
Yes, the 7143LA20PF8 can operate standalone, but without hardware arbitration - meaning simultaneous accesses to the same address on both ports will result in undefined data and potential bus contention. For reliable conflict resolution, it must be paired with an IDT7133 as MASTER, or software-managed access protocols must be implemented. Its SLAVE design assumes external BUSY coordination.
Does the 7143LA20PF8 support battery backup, and what voltage is required?
Yes, the 7143LA20PF8 supports battery backup data retention at VCC = 2.0 V minimum, with typical data retention current of 100 µA (commercial) or 4000 µA (military/industrial). This allows continuous memory hold during main power loss - critical for avionics black boxes and medical event loggers. The 2 V threshold is guaranteed, not typical.
What is the difference between 7143LA20PF8 and 7143SA20PF8?
The "LA" suffix denotes Low-power Active/Standby operation: 1050 mW typical active power and 1 mW typical standby current, versus "SA" (Standard Active) at 1150 mW active and 5 mW standby. Both share identical timing (20 ns), pinout, and functionality. Choose 7143LA20PF8 for thermally constrained or battery-operated systems where power efficiency is prioritized.
Is the 7143LA20PF8 pin-compatible with other members of the IDT7133/7143 family?
Yes, the 7143LA20PF8 shares identical 68-pin PLCC pinout with all IDT7133/7143 variants including IDT7133LA20PF8, IDT7143SA20PF8, and military-grade versions. This enables drop-in replacement within the same speed grade and package type, provided the MASTER/SLAVE role and power profile align with system requirements.
7143LA20PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- 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:
- 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:
- 100-TQFP (14x14)
7143LA20PF8 FAQ
1.How can I place an order for 7143LA20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143LA20PF8 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 7143LA20PF8 reliable?
The price and inventory of 7143LA20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143LA20PF8 is usually 5 days.
3.What payment methods are accepted for 7143LA20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143LA20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143LA20PF8?
7143LA20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143LA20PF8 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 7143LA20PF8?
For technical support, including 7143LA20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143LA20PF8 requirements.
6.How does Aetrix verify that 7143LA20PF8 is sourced from the original manufacturer or authorized distributors?
All 7143LA20PF8 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 7143LA20PF8 meets industry standards.
7.What is the process for return or replacement of 7143LA20PF8?
All 7143LA20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7143LA20PF8, 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 7143LA20PF8 part is unused and in its original packaging.
Return procedure for 7143LA20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143LA20PF8 Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24CS02-SSHM-T
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AT24C08C-STUM-T
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