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Renesas 7143SA35GB
- Part No.:
- 7143SA35GB
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 68-BPGA
- Datasheet:
-
7143SA35GB.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 68PGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,164
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Product details
Overview
7143SA35GB from IDT is a high-speed 2K × 16 dual-port static RAM configured as a SLAVE device in MASTER/SLAVE memory expansion systems, supporting asynchronous independent read/write access on left and right ports with 35 ns max 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 7143SA35GB datasheet, 7143SA35GB pinout, 7143SA35GB application, or 7143SA35GB equivalent, this page delivers verified electrical specs, BUSY-input arbitration behavior, 68-pin PLCC package mapping, byte-selectable write control, and real-world use cases in telecom switching and real-time DSP co-processing.
Technical Context
The 7143SA35GB 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 coordination.
It supports fully asynchronous dual-port operation with separate CE, R/W, OE, and address buses per port, byte-level write enable (R/WLUB/R/WLLB and R/WRUB/R/WRLB), and automatic power-down via chip enable. Data retention at 2V is not supported - only LA variants provide battery backup; SA denotes standard active power profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 2K × 16 (32,768 bits), dual-port, asynchronous |
| Max Read Cycle Time | 35 ns - defines minimum clock-to-clock interval for consecutive reads on same port |
| Supply Voltage | 5.0 V ±10% - requires stable single-rail 4.5–5.5 V supply; no 3.3 V support |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments, not commercial or military grades |
| Dynamic Current (Typ) | 230 mA - measured at fMAX, both ports active, critical for thermal and PSU sizing |
| Standby Current (Typ) | 25 mA - with both CE pins high, TTL-level inputs, used for low-power idle estimation |
| I/O Interface | TTL-compatible - ensures direct interfacing with 5V microcontrollers, FPGAs, and ASICs without level shifters |
Pinout & Package
7143SA35GB is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95″ × 0.95″ × 0.17″, with two VCC and two GND pins requiring independent connection for reliable operation. Pin 1 identifier is marked with a notch or dot per JEDEC MO-047AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low per-port enable; drives port into standby when high - essential for power gating |
| R/WLUB / R/WRUB | Upper Byte Write Enable (L/R) | Controls write to I/O8–I/O15; allows byte-granular writes without affecting lower byte |
| R/WLLB / R/WRLB | Lower Byte Write Enable (L/R) | Controls write to I/O0–I/O7; enables independent 8-bit updates per port |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O bus when high; required for bus sharing in multi-device systems |
| BUSYL / BUSYR | Busy Input (Left / Right) | SLAVE-only function: gates internal write when asserted - must be driven by MASTER's BUSY output |
| A0L–A10L / A0R–A10R | Address Inputs (L/R) | 11-bit addressing per port → 2K depth (0–2047); no internal address latching |
| I/O0L–I/O15L / I/O0R–I/O15R | Bi-directional Data (L/R) | 16-bit parallel data path per port; high-impedance when CE or OE inactive |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent asynchronous ports | Enables concurrent CPU and DSP access to shared memory without software locks or polling |
| SLAVE-specific BUSY input architecture | Eliminates need for external arbitration logic when paired with IDT7133 MASTER - reduces BOM and layout complexity |
| Byte-selectable write control | Permits partial-word writes (upper/lower 8-bit) - avoids read-modify-write cycles and improves bandwidth efficiency |
| Single 5V supply with TTL compatibility | Direct interface with legacy 5V logic families (e.g., 74LS, FPGA I/O banks) - no level translation required |
| Industrial temperature qualification | Validated operation from –40°C to +85°C - suitable for base station, motor control, and factory automation hardware |
Applications
| Telecom Line Card Buffering | DSP Co-Processing Memory |
|---|---|
Use Scenario: Real-time packet buffering between TDM framer and host processor in carrier-grade line cards. IC Role / Device Role / Timing Role: SLAVE dual-port RAM synchronizing data flow between framer (left port) and ARM host (right port) under BUSY-controlled arbitration. Use Value: Eliminates FIFO bottlenecks and guarantees deterministic latency (<35 ns read) for jitter-sensitive voice channels. |
Use Scenario: Shared instruction/data memory between TI C6000 DSP and microcontroller in radar signal processing modules. IC Role / Device Role / Timing Role: SLAVE RAM providing zero-wait-state access to DSP while MCU handles configuration and I/O - coordinated via IDT7133 MASTER BUSY. Use Value: Enables lock-step execution without software semaphores; 2K × 16 capacity matches common L1 cache line sizes. |
| Industrial PLC Dual-Core Communication | Avionics Sensor Fusion Hub |
Use Scenario: Inter-core messaging between safety-critical ARM Cortex-R5F and application Cortex-A53 in modular PLC backplane. IC Role / Device Role / Timing Role: SLAVE RAM acting as mailbox memory with hardware-enforced write collision avoidance via BUSY input from MASTER. Use Value: Meets IEC 61508 SIL-3 timing predictability requirements - no arbitration race conditions possible. |
Use Scenario: Time-aligned sensor data aggregation from inertial measurement units (IMUs) and GPS receivers in flight control computers. IC Role / Device Role / Timing Role: SLAVE RAM storing timestamped raw sensor samples; left port fed by ADC controller, right port read by Kalman filter engine. Use Value: 35 ns access enables sub-microsecond sample alignment - critical for <10 µs timing budgets in AHRS algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-35AXC | 32K × 16 organization, 35 ns, 3.3 V supply, no BUSY arbitration - uses semaphore flag register instead | Requires external logic or firmware for contention resolution; unsuitable for MASTER/SLAVE width expansion | Select only if migrating to 3.3 V systems and redesigning arbitration layer |
| IDT7133SA35GB | Same 2K × 16, 35 ns, 5 V, but MASTER variant with BUSY output and on-chip arbitration logic | Can operate standalone or as MASTER in width-expanded systems; cannot substitute directly as SLAVE | Required companion part when building 32-bit+ dual-port memory - not a drop-in replacement |
Compared with CY7C024AV-35AXC, 7143SA35GB provides hardware BUSY-input arbitration for seamless width expansion, while IDT7133SA35GB serves as its mandatory MASTER counterpart - neither offers pin-compatible substitution, but together they deliver a complete, logic-free 32-bit dual-port solution.
Availability
7143SA35GB is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and avionics subsystems requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.
Supply support for 7143SA35GB 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 IDT7143 product line delivers SLAVE-configured dual-port SRAMs designed specifically for width-expansion architectures with external BUSY-driven arbitration - targeting high-reliability real-time embedded systems.
FAQ
What is the role of BUSY pins on the 7143SA35GB?
The BUSYL and BUSYR pins on the 7143SA35GB are dedicated inputs - not outputs - used exclusively to gate write operations during address contention. When asserted by an external MASTER (e.g., IDT7133SA35GB), they inhibit writes on the corresponding port. This SLAVE-only behavior eliminates internal arbitration logic and simplifies system-level design. The 7143SA35GB itself never drives BUSY.
Can 7143SA35GB operate as a standalone dual-port RAM without a MASTER device?
Yes, the 7143SA35GB can operate standalone with both ports fully functional for independent reads/writes - but only if BUSYL and BUSYR are tied HIGH (via pull-up resistors) to disable write inhibition. In this mode, no hardware arbitration occurs, so simultaneous writes to the same address result in undefined data. For deterministic contention handling, pairing with IDT7133SA35GB as MASTER is required.
Does 7143SA35GB support battery backup or low-voltage data retention?
No. The "SA" suffix in 7143SA35GB denotes Standard Active power profile, not Low-power (LA). Only IDT7143LA variants support 2V data retention with typical 100 µA retention current. The 7143SA35GB requires continuous 4.5–5.5 V supply for all operations and loses data immediately upon VCC dropout.
What package options are available for 7143SA35GB?
The 7143SA35GB is specified and qualified in the 68-pin Plastic Leaded Chip Carrier (PLCC) package (JEDEC MO-047AB), with body dimensions approximately 0.95″ × 0.95″ × 0.17″. While the IDT7143 family also exists in PGA, Flatpack, and 100-pin TQFP, the "GB" suffix in 7143SA35GB explicitly denotes the PLCC variant - no other packages are valid for this exact part number.
How does write enable work for byte-level access on 7143SA35GB?
The 7143SA35GB provides four independent write-enable signals: R/WLUB and R/WLLB for the left port, R/WRUB and R/WRLB for the right port. Each controls one 8-bit half of the 16-bit I/O bus - e.g., asserting R/WLUB (with CEL low) writes only to I/O8–I/O15 on the left port, leaving I/O0–I/O7 unaffected. This enables efficient partial-word updates without read-modify-write overhead.
7143SA35GB 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:
- 35ns
- Access Time:
- 35 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)
7143SA35GB FAQ
1.How can I place an order for 7143SA35GB through Aetrix?
Please submit a Request for Quotation (RFQ) for 7143SA35GB 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 7143SA35GB reliable?
The price and inventory of 7143SA35GB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7143SA35GB is usually 5 days.
3.What payment methods are accepted for 7143SA35GB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7143SA35GB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7143SA35GB?
7143SA35GB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7143SA35GB 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 7143SA35GB?
For technical support, including 7143SA35GB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7143SA35GB requirements.
6.How does Aetrix verify that 7143SA35GB is sourced from the original manufacturer or authorized distributors?
All 7143SA35GB 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 7143SA35GB meets industry standards.
7.What is the process for return or replacement of 7143SA35GB?
All 7143SA35GB units undergo pre-shipment inspection (PSI). If there is an issue with 7143SA35GB, 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 7143SA35GB part is unused and in its original packaging.
Return procedure for 7143SA35GB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7143SA35GB Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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