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Renesas 7025L35PF8
- Part No.:
- 7025L35PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025L35PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
7025L35PF8 from IDT is a high-speed 8K × 16 (128 Kbit) true dual-port static RAM with independent asynchronous left/right ports, 35 ns maximum read cycle time, 1 µA typical standby current, and TTL-compatible 5 V ±10% operation - used in real-time inter-processor communication and military-grade avionics data buffering.
For engineers reviewing the 7025L35PF8 datasheet, 7025L35PF8 pinout, 7025L35PF8 application, or 7025L35PF8 equivalent, key selection considerations include BUSY arbitration timing (tBAA ≤ 20 ns), semaphore flag support (8 flags via A0–A2), battery backup retention at 2 V, and compatibility with master/slave cascading for 32-bit+ word systems.
Technical Context
The 7025L35PF8 implements full hardware port arbitration with dedicated BUSY output (master) or input (slave), enabling deterministic conflict resolution during simultaneous access to identical addresses. Its on-chip semaphore logic supports eight independent flags accessed via I/O0–I/O15 using address lines A0–A2.
It operates fully asynchronously from either port, with separate CE/R/W/OE/UB/LB controls per side, and supports byte-selectable writes (upper/lower 8-bit lanes) for multiplexed bus interfacing. The L-version uses CMOS design to achieve 1 µA full-standby current under CMOS-level inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8K × 16 = 128 Kbit, organized as two independent 8K-word × 16-bit ports |
| Access Time | 35 ns max read cycle (tRC), enabling 28.6 MHz sustained throughput per port |
| Supply Voltage | 5.0 V ±10%, compatible with legacy TTL logic families without level-shifting |
| Standby Current | 1 µA typical (ISB3, both ports in full CMOS standby), enabling battery-backed data retention |
| Data Retention | 2 V minimum VCC, supporting nonvolatile hold mode during main power loss |
| Operating Temp | –40°C to +85°C industrial range, qualified for embedded control and avionics |
| Package | 100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm footprint with 0.5 mm pitch |
Pinout & Package
7025L35PF8 is housed in a 100-pin TQFP (PNG100) package with exposed thermal pad, measuring 14 mm × 14 mm × 1.4 mm. Pin assignments follow standard dual-port RAM layout with mirrored left/right I/O, address, and control groups, plus dedicated M/S, INT, and BUSY signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L / A0R–A12R | Address Inputs (Left/Right) | 13-bit address buses for independent 8K-word addressing per port |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data (Left/Right) | 16-bit parallel data paths; support byte-wide reads/writes via UBL/UBL and LBL/LBR |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables memory array access; deassertion places port in low-power standby |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write enable; high = read, low = write; controls direction of I/O transceivers |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; allows high-impedance tri-state for bus sharing |
| UBL / UBR / LBL / LBR | Byte Select (Upper/Lower) | Enable 8-bit sub-word access; permits multiplexed 8-bit bus expansion without glue logic |
| SEML / SEMR | Semaphore Enable | Active-low enables semaphore flag register access (8 flags via A0–A2) |
| INTL / INTR | Interrupt Flag Output | Open-drain push-pull interrupt signal asserted on semaphore or write event |
| BUSYL / BUSYR | Arbitration Status | Master: output indicating port contention; Slave: input used to stall write operations |
| M/S | Master/Slave Select | High = BUSY output (master); Low = BUSY input (slave); configures cascaded system topology |
| VCC / GND | Power & Ground | Multiple distributed VCC/GND pins ensure stable supply and low-noise operation across high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent read/write to same location with hardware BUSY arbitration |
| On-Chip Semaphore Logic | Eight dedicated flags accessible via A0–A2, eliminating external lock management logic |
| Master/Slave Cascading | Enables 32-bit+ data bus expansion using M/S pin and BUSY handshaking without discrete glue |
| Battery Backup Support | Retains valid data at 2 V VCC, allowing seamless transition to backup power during main supply failure |
| Low-Power Standby Mode | 1 µA typical ISB3 current enables always-on memory state in power-constrained systems |
Applications
| Avionics Flight Control | Digital Signal Processor Interface |
|---|---|
Use Scenario: Real-time exchange of sensor fusion data between flight management computer and autopilot processor. IC Role / Device Role / Timing Role: Dual-port RAM acts as deterministic shared memory buffer with BUSY-controlled arbitration preventing race conditions. Use Value: 35 ns access ensures sub-35 ns inter-processor handshake latency, meeting DO-254 Level A timing budgets. | Use Scenario: Offloading FFT coefficient tables and intermediate results between dual DSP cores in radar processing. IC Role / Device Role / Timing Role: Provides zero-wait-state memory access for both cores, with semaphore flags coordinating pipeline stages. Use Value: 16-bit dual-width interface eliminates 32-bit data splitting, reducing instruction overhead by ~40% vs. single-port alternatives. |
| Industrial PLC Backplane | Military Radio Baseband |
Use Scenario: Shared I/O mapping table between CPU module and motion control ASIC across modular backplane. IC Role / Device Role / Timing Role: Acts as synchronized configuration memory with INT-driven updates on parameter changes. Use Value: Industrial temperature rating (–40°C to +85°C) and 100-pin TQFP ensure reliability in uncooled control cabinets. | Use Scenario: Storing encrypted channel parameters and hopping sequences between RF transceiver and crypto engine. IC Role / Device Role / Timing Role: Secure dual-access memory with battery-retained keys during power cycling. Use Value: 2 V data retention enables cryptographic state persistence through brownout events in field-deployed radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1370D-35BVXI | 35 ns access, 8K × 18 organization, 3.3 V core with 5 V tolerant I/O | Requires level translation for pure 5 V systems; wider data bus suits parity-aware designs | Select when 3.3 V power architecture and error-checking capability are prioritized over pin compatibility |
| AS7C3256A-35JCIN | 35 ns access, 32K × 8 organization, 5 V only, no built-in semaphore or BUSY logic | Lacks hardware arbitration - requires external logic or software coordination for multi-processor use | Select for cost-sensitive 5 V systems where arbitration is handled at firmware level and density >128 Kbit is needed |
Compared with CY7C1370D-35BVXI and AS7C3256A-35JCIN, the 7025L35PF8 uniquely integrates hardware semaphore and master/slave BUSY arbitration in a 5 V-only, 128 Kbit dual-port package - eliminating external logic while ensuring deterministic real-time coherency in safety-critical embedded systems.
Availability
7025L35PF8 is available at Aetrix Electronics and suitable for avionics flight control, industrial PLC backplane, and military radio baseband applications requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial-temperature performance.
Supply support for 7025L35PF8 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 IDT7025 product line delivers high-reliability dual-port SRAMs for deterministic inter-processor communication in aerospace, defense, and industrial automation - emphasizing hardware arbitration, battery backup, and extended temperature operation.
FAQ
What is the maximum operating temperature range for the 7025L35PF8?
The 7025L35PF8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including 35 ns access time, 1 µA standby current, and 2 V data retention. It does not support military-grade –55°C to +125°C operation, which applies only to specific 7025X70 variants in PGA/Flatpack packages.
Does the 7025L35PF8 support true simultaneous read access to the same memory location?
Yes, the 7025L35PF8 supports true simultaneous reads from both ports to the same address without contention or arbitration delay. Its dual-port cell architecture guarantees concurrent access integrity, and BUSY signaling is only asserted during write-write or read-write conflicts - not during read-read operations.
How is semaphore functionality implemented in the 7025L35PF8?
The 7025L35PF8 implements eight hardware semaphore flags accessed via I/O0–I/O15 using address lines A0–A2. Semaphore mode is enabled by setting SEM = VIH for RAM access or SEM = VIL for semaphore access. Each flag is independently writable via I/O0 and readable across all 16 I/O lines, providing lock-free inter-processor synchronization without software overhead.
What package type is used for the 7025L35PF8?
7025L35PF8 uses a 100-pin Thin Quad Flatpack (TQFP) package, designated PNG100, with dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. This surface-mount package includes an exposed thermal pad and is distinct from the 84-pin PGA (PLG84), Flatpack (FP84), or PLCC variants offered in the broader 7025 family.
Can the 7025L35PF8 operate with a 2 V supply for data retention only?
Yes, the 7025L35PF8 guarantees data retention at VCC = 2.0 V with ICCDR ≤ 4000 µA across military and industrial temperature ranges. During retention mode, CE must be held high, inputs biased to valid logic levels, and no active cycling performed. This enables reliable hold-mode operation during main power interruption while maintaining full 128 Kbit state.
7025L35PF8 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:
- 128Kbit
- Memory Organization:
- 8K 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
7025L35PF8 FAQ
1.How can I place an order for 7025L35PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L35PF8 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 7025L35PF8 reliable?
The price and inventory of 7025L35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L35PF8 is usually 5 days.
3.What payment methods are accepted for 7025L35PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L35PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L35PF8?
7025L35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L35PF8 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 7025L35PF8?
For technical support, including 7025L35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L35PF8 requirements.
6.How does Aetrix verify that 7025L35PF8 is sourced from the original manufacturer or authorized distributors?
All 7025L35PF8 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 7025L35PF8 meets industry standards.
7.What is the process for return or replacement of 7025L35PF8?
All 7025L35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025L35PF8, 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 7025L35PF8 part is unused and in its original packaging.
Return procedure for 7025L35PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025L35PF8 Tags
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AT24C02C-XHM-T
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