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Renesas 7143SA70GB
- Part No.:
- 7143SA70GB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7143SA70GB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,301
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Product details
Overview
7143SA70GB 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 read/write access on left and right ports with 70 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It enables error-free 32-bit-or-wider memory systems without external logic.
For engineers reviewing the 7143SA70GB datasheet, 7143SA70GB pinout, 7143SA70GB application, or 7143SA70GB equivalent, key selection considerations include its role as BUSY-input SLAVE in arbitration-controlled width expansion, 70 ns timing grade, 68-pin PLCC package, and compatibility with IDT7133SA70GB MASTER for deterministic contention resolution.
Technical Context
The 7143SA70GB operates fully asynchronously on both ports, with separate chip enable (CEL/CER), byte-level write controls (R/WLUB/R/WLLB/R/WRUB/R/WRLB), and output enables (OEL/OER). Its BUSY pins function strictly as inputs-unlike the MASTER IDT7133-enabling write inhibition during address contention without internal arbitration logic.
It supports battery backup data retention at VCC = 2V (LA variant only), but the SA suffix confirms standard-power operation (1150 mW active typ., 5 mW standby typ.). All timing parameters-including tRC = 70 ns, tACE = 70 ns, and tAOE = 40 ns-are specified over the industrial temperature range and validated for 5.0V ±10% supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2K × 16 bits (32 Kbit), enabling 16-bit data path per port with full addressability across A0–A10. |
| Access Time | 70 ns max read cycle time (tRC), defining minimum clock-to-data latency in synchronous bus interfaces. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V), compatible with legacy TTL and 5V CMOS system rails without level translation. |
| Operating Temp | –40°C to +85°C (industrial grade), qualified for embedded control, avionics, and industrial automation environments. |
| Power Consumption | 1150 mW typical active power, 5 mW typical standby-critical for thermal management in dense memory modules. |
| Package | 68-pin PLCC (PLG68), surface-mountable with 0.95″ × 0.95″ footprint and standard reflow compatibility. |
| BUSY Function | BUSYL/BUSYR are dedicated inputs only-no internal arbitration-requiring external MASTER (e.g., 7133SA70GB) to drive them for contention control. |
Pinout & Package
68-pin Plastic Leaded Chip Carrier (PLCC, package code PLG68), top-view pinout with dual I/O banks, mirrored address/control sets for left/right ports, two VCC and two GND pins requiring independent connection per datasheet Note 1–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A10L / A0R–A10R | Address Inputs (Left/Right) | 11-bit address per port selects one of 2K locations; no shared address lines between ports. |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data (Left/Right) | 16-bit parallel data path per port; high-impedance when CE or OE inactive. |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables port access; deassertion forces standby mode and reduces power to 5 mW typ. |
| R/WLUB/R/WLLB / R/WRUB/R/WRLB | Byte Write Enables | Independent upper/lower byte write control per port-enables 8-bit sub-word writes without masking logic. |
| OEL / OER | Output Enable (Left/Right) | Active-low enables data output drivers; allows read-only access while write paths remain disabled. |
| BUSYL / BUSYR | BUSY Input (Left/Right) | Asynchronous write-inhibit signals-must be driven by external MASTER's open-drain BUSY outputs with pull-up resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-port asynchronous operation | Enables concurrent CPU and DMA access to same memory array without software arbitration or wait states. |
| SLAVE-only BUSY interface | Eliminates need for external OR gates or priority encoders when expanding data width beyond 16 bits. |
| Byte-selectable write control | Reduces glue logic in mixed-width systems (e.g., 8-bit peripherals writing to 16-bit memory space). |
| Industrial temperature qualification | Validated operation from –40°C to +85°C ensures reliability in uncontrolled environmental deployments. |
| 68-pin PLCC package | Provides mechanical robustness and thermal performance superior to TQFP for high-reliability applications. |
Applications
| Real-time DSP Memory Buffer | Avionics Flight Control Interface |
|---|---|
Use Scenario: Dual-core DSP system where one core processes sensor data while the other runs control algorithms, sharing telemetry buffers. IC Role / Device Role / Timing Role: SLAVE 7143SA70GB provides second 16-bit port in 32-bit-wide memory bank, synchronized via MASTER 7133SA70GB BUSY arbitration. Use Value: Eliminates inter-core handshake overhead and guarantees atomic read-modify-write on shared variables with hardware-enforced contention resolution. | Use Scenario: Redundant flight computer pair exchanging status vectors and actuator commands via shared memory. IC Role / Device Role / Timing Role: 7143SA70GB serves as SLAVE in dual-ported RAM subsystem, accepting write requests only after MASTER resolves address conflicts. Use Value: Prevents simultaneous writes to critical control registers-ensuring deterministic behavior required for DO-254 Level A certification. |
| Industrial PLC I/O Mapping | Medical Imaging Frame Store |
Use Scenario: Programmable logic controller using one port for ladder logic execution and the other for real-time I/O scanning. IC Role / Device Role / Timing Role: 7143SA70GB acts as SLAVE in width-expanded memory map, receiving BUSY signal from MASTER to gate I/O update cycles. Use Value: Guarantees scan-cycle integrity by blocking I/O writes during logic execution, preventing torn reads/writes in safety-critical motion control. | Use Scenario: Digital radiography system buffering raw detector frames before compression and display processing. IC Role / Device Role / Timing Role: SLAVE 7143SA70GB extends frame buffer width to 32 bits, synchronized to MASTER's arbitration to avoid pixel corruption during concurrent capture/display. Use Value: Enables zero-latency frame handoff between acquisition and rendering engines without frame loss or visual artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7133SA70GB | MASTER device with on-chip arbitration logic and open-drain BUSY output; identical speed, voltage, and package. | Required when implementing BUSY-driven width expansion-cannot operate standalone as SLAVE. | Select 7133SA70GB as MASTER paired with 7143SA70GB SLAVE for deterministic 32-bit+ memory systems. |
| CY7C1362BV33-70BGXI | 3.3V core, 70 ns, 2K × 16, but uses different BUSY protocol (bidirectional) and lacks native MASTER/SLAVE pairing logic. | Suitable for new 3.3V designs but requires redesign of arbitration circuitry and timing margins. | Choose only if migrating to 3.3V infrastructure; not drop-in compatible due to voltage, BUSY semantics, and pinout differences. |
Compared with IDT7133SA70GB (MASTER), the 7143SA70GB eliminates arbitration logic to reduce power and cost-but requires external BUSY coordination. Versus CY7C1362BV33-70BGXI, it maintains 5V compatibility and proven MASTER/SLAVE interoperability, avoiding timing recalibration in legacy systems.
Availability
7143SA70GB is available at Aetrix Electronics and suitable for real-time DSP memory buffers, avionics flight control interfaces, and industrial PLC I/O mapping requiring stable component supply across extended product lifecycles.
Supply support for 7143SA70GB 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 high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.
The IDT7133/7143 family was designed specifically for deterministic dual-port memory expansion in safety-critical and real-time systems where hardware arbitration eliminates software overhead and timing uncertainty.
FAQ
What is the primary functional distinction between 7143SA70GB and IDT7133SA70GB?
The 7143SA70GB is a SLAVE-only dual-port SRAM with BUSY pins functioning strictly as inputs for write inhibition, while the IDT7133SA70GB is the MASTER device containing on-chip arbitration logic and open-drain BUSY outputs. The 7143SA70GB cannot operate standalone in BUSY-controlled systems-it must be paired with a 7133SA70GB to resolve address contention.
Does 7143SA70GB support battery backup data retention?
No. The "SA" suffix in 7143SA70GB denotes the standard-power version; battery backup data retention (down to 2V) is exclusive to the "LA" variant (e.g., 7143LA70GB). The 7143SA70GB specifies 5 mW typical standby current at 5V but does not guarantee data retention below 4.5V.
Can 7143SA70GB be used without a MASTER device like IDT7133SA70GB?
Yes-but only in non-contention scenarios. If left and right ports never access the same memory location simultaneously, BUSY logic is unnecessary and the 7143SA70GB functions as a standard dual-port SRAM. However, deterministic arbitration for width expansion requires the MASTER/SLAVE pairing.
What is the significance of the "70" in 7143SA70GB?
The "70" indicates the maximum read cycle time rating of 70 ns, verified across the industrial temperature range (–40°C to +85°C) at VCC = 5.0V ±10%. This defines the slowest guaranteed access speed-not a typical value-and applies to all timing parameters including tACE and tAOE.
Which package variants are available for 7143SA70GB according to official IDT documentation?
IDT documentation confirms 7143SA70GB is offered in 68-pin PLCC (PLG68), 68-pin ceramic PGA (GU68), 68-pin flatpack (FP68), and 100-pin TQFP (PNG100). The "GB" suffix in the part number specifically denotes the 68-pin PLCC package per IDT's ordering guide.
7143SA70GB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 68-BPGA
- Packaging:
- Tube
- 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:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (29.46x29.46)
7143SA70GB FAQ
1.How can I place an order for 7143SA70GB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143SA70GB 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 7143SA70GB reliable?
The price and inventory of 7143SA70GB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143SA70GB is usually 5 days.
3.What payment methods are accepted for 7143SA70GB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143SA70GB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143SA70GB?
7143SA70GB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143SA70GB 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 7143SA70GB?
For technical support, including 7143SA70GB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143SA70GB requirements.
6.How does Aetrix verify that 7143SA70GB is sourced from the original manufacturer or authorized distributors?
All 7143SA70GB 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 7143SA70GB meets industry standards.
7.What is the process for return or replacement of 7143SA70GB?
All 7143SA70GB units undergo pre-shipment inspection (PSI). If there is an issue with 7143SA70GB, 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 7143SA70GB part is unused and in its original packaging.
Return procedure for 7143SA70GB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143SA70GB Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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