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Renesas 7005L25PFI8
- Part No.:
- 7005L25PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005L25PFI8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
7005L25PFI8 from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 25 ns max read cycle time (tRC), 2V data retention capability, and industrial temperature range (–40°C to +85°C). It supports simultaneous reads of the same memory location and is used in real-time inter-processor communication systems requiring deterministic arbitration.
For engineers reviewing the 7005L25PFI8 datasheet, 7005L25PFI8 pinout, 7005L25PFI8 application, or 7005L25PFI8 equivalent, key selection criteria include BUSY/INT semaphore timing, master/slave configuration via M/S pin, low-power standby current (1 µA typ.), and TQFP-64 package compatibility with PCB layout for dual-bus memory bridges.
Technical Context
The 7005L25PFI8 implements full hardware port arbitration using push-pull BUSY outputs and dedicated SEM/INT signaling logic. Its dual asynchronous ports operate independently with separate CE/R/W/OE controls, enabling concurrent read/write operations across left (L) and right (R) interfaces without external logic.
It integrates on-chip semaphore flags (8 addressable via A0–A2), interrupt flag latching (INTL/INTR), and automatic power-down via CE control. The device uses CMOS technology with TTL-compatible I/Os and supports battery backup operation at 2V with 100 µA typical retention current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 bits (64 Kbit total); enables 16-bit+ word expansion via Master/Slave cascading |
| Max Read Cycle Time (tRC) | 25 ns - guarantees deterministic latency for real-time bus arbitration in dual-CPU systems |
| Standby Current (ISB3) | 0.2 mA typ. - ultra-low power retention mode with all CMOS-level inputs held valid |
| Data Retention Voltage | 2.0 V - supports battery-backed operation during main power loss without data corruption |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control and avionics subsystems |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail compatible with legacy TTL logic families |
| Package | 64-pin thin quad flatpack (TQFP) - 14 mm × 14 mm footprint with 0.5 mm pitch for high-density routing |
Pinout & Package
64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access; independent of right port addressing |
| A0R–A12R | Right port address inputs | 13-bit address bus for right-side memory access; no shared address lines with left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path for left port; tri-stated when OEL = H or CEL = H |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path for right port; tri-stated when OER = H or CER = H |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls power-down entry for that side only |
| R/WL / R/WR | Read/write control (left/right) | Active-low write enable; high = read mode; determines direction of I/O data flow per port |
| OEL / OER | Output enable (left/right) | Active-low enables output drivers; allows read data to appear on I/O pins |
| SEML / SEMR | Semaphore enable (left/right) | Active-low selects semaphore register access instead of memory array |
| INTL / INTR | Interrupt flag (left/right) | Open-drain compatible outputs indicating pending interrupt status per port |
| BUSYL / BUSYR | Busy flag (left/right) | Push-pull outputs (master) or inputs (slave); signal contention during simultaneous access |
| M/S | Master/Slave select | H = BUSY outputs active; L = BUSY inputs active; configures arbitration role in multi-device systems |
| VCC / GND | Power supply | Multiple VCC/GND pins distributed for noise reduction and stable decoupling in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous, independent read/write access to same or different addresses without arbitration delay |
| Hardware semaphore support | Eight dedicated flags accessible via A0–A2 allow atomic resource locking between processors without software overhead |
| On-chip arbitration logic | Automatic BUSY assertion resolves port contention within 20 ns (tBDD), eliminating need for external priority encoders |
| 2V data retention mode | Preserves memory contents during main power failure using backup battery, with <100 µA ICCDR draw |
| Master/Slave cascading | Supports 16-bit+ data bus expansion by connecting multiple devices with M/S pin configuration and BUSY chaining |
Applications
| Real-Time Inter-Processor Communication | Dual-CPU Embedded Control Systems |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands via shared memory without polling or OS intervention. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronous message buffer with hardware semaphore coordination and sub-25 ns read latency. Use Value: Eliminates software mutex overhead and guarantees deterministic response under worst-case contention via tBDD ≤30 ns. | Use Scenario: Industrial PLC uses one CPU for I/O scanning and another for motion control, sharing status registers and setpoints. IC Role / Device Role / Timing Role: Memory bridge with independent left/right buses and BUSY-driven arbitration ensures atomic updates to shared variables. Use Value: Prevents race conditions during concurrent writes with tAPS = 5 ns setup guarantee and push-pull BUSY signaling. |
| Avionics Data Concentrators | Redundant Flight Computer Interfaces |
Use Scenario: Sensor fusion unit aggregates ADC outputs from multiple analog front-ends into a unified data stream for flight management. IC Role / Device Role / Timing Role: High-reliability dual-port RAM with 2V retention stores critical telemetry during brownout events. Use Value: Maintains integrity of last-known-good sensor values with <4000 µA max ICCDR at –55°C to +125°C military grade. | Use Scenario: Primary and backup flight computers maintain synchronized state through mirrored memory regions. IC Role / Device Role / Timing Role: Master/Slave configured 7005L25PFI8 pairs provide fault-tolerant memory mirroring with automatic failover signaling via INT/SEM. Use Value: Enables seamless switchover with tINR ≤20 ns interrupt reset and tSWRD = 5 ns semaphore write-to-read latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-25AXC | 25 ns tRC, 8K × 16 organization, 100-pin TQFP; higher density but wider bus requires redesign | Requires 16-bit data path and larger PCB footprint; lacks integrated M/S cascading logic | Choose when 16-bit word width is mandatory and board space permits larger package |
| AS7C38098B-25JCIN | 25 ns tRC, 8K × 8, 64-pin TQFP; commercial temp only (0°C to +70°C); no BUSY/SEM hardware | No built-in arbitration or semaphore logic - external logic required for multi-processor sync | Choose for cost-sensitive non-industrial designs where software-managed locking suffices |
Compared with CY7C028V-25AXC and AS7C38098B-25JCIN, the 7005L25PFI8 uniquely delivers industrial temperature support, integrated hardware arbitration, and battery-retained operation in the same 64-pin TQFP footprint-enabling drop-in replacement in legacy dual-CPU systems without layout changes.
Availability
7005L25PFI8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial PLC memory bridging, and avionics data concentrator applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7005L25PFI8 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 IDT7005 product line was designed specifically for deterministic dual-processor memory sharing in mission-critical embedded systems, emphasizing hardware-accelerated arbitration, low-power retention, and industrial reliability.
FAQ
What is the maximum operating temperature range for the 7005L25PFI8?
The 7005L25PFI8 is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and qualified for use in harsh-environment embedded control systems without derating.
Does the 7005L25PFI8 support battery backup operation?
Yes, the 7005L25PFI8 supports battery backup operation down to 2.0 V with typical data retention current of 100 µA, enabling non-volatile storage during main power loss while maintaining full functionality upon restoration.
How does the M/S pin affect BUSY signal behavior on the 7005L25PFI8?
When M/S = H, BUSYL and BUSYR are push-pull outputs indicating port contention; when M/S = L, they become inputs that inhibit writes on the slave port, enabling hierarchical arbitration in multi-device configurations.
What is the minimum pulse width required for reliable semaphore flag writes on the 7005L25PFI8?
The 7005L25PFI8 requires a minimum semaphore update pulse width (tSOP) of 10 ns, guaranteed across industrial temperature and voltage ranges, ensuring robust flag setting/clearing during high-speed inter-processor synchronization.
Can the 7005L25PFI8 be used in a 16-bit data bus configuration?
Yes, the 7005L25PFI8 supports 16-bit expansion via Master/Slave cascading: two devices can be connected using the M/S pin and BUSY chaining to form a 8K × 16 memory without external glue logic.
7005L25PFI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP
7005L25PFI8 FAQ
1.How can I place an order for 7005L25PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L25PFI8 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 7005L25PFI8 reliable?
The price and inventory of 7005L25PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L25PFI8 is usually 5 days.
3.What payment methods are accepted for 7005L25PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L25PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L25PFI8?
7005L25PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L25PFI8 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 7005L25PFI8?
For technical support, including 7005L25PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L25PFI8 requirements.
6.How does Aetrix verify that 7005L25PFI8 is sourced from the original manufacturer or authorized distributors?
All 7005L25PFI8 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 7005L25PFI8 meets industry standards.
7.What is the process for return or replacement of 7005L25PFI8?
All 7005L25PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 7005L25PFI8, 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 7005L25PFI8 part is unused and in its original packaging.
Return procedure for 7005L25PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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