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Renesas 7005L25PFI
- Part No.:
- 7005L25PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
7005L25PFI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,730
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Product details
Overview
7005L25PFI from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 25 ns max read cycle time (tRC), 2 V data retention capability, and integrated hardware semaphore/arbitration logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the 7005L25PFI datasheet, 7005L25PFI pinout, 7005L25PFI application, or 7005L25PFI equivalent, this page delivers verified timing specs, master/slave port arbitration behavior, BUSY/INT signal timing, low-power standby current (1 µA typ), and TQFP-64 package compatibility for industrial control and military-grade dual-CPU designs.
Technical Context
The 7005L25PFI implements fully asynchronous dual-port operation with separate address, data, and control lines per port (A0L–A12L/I/O0L–I/O7L/R/WL/CEL/OEL/BUSYL/INTL/SEML on left; mirrored on right). It supports simultaneous reads of the same memory location and uses on-chip arbitration to resolve contention via BUSY flag assertion or semaphore signaling.
Its M/S pin configures master (BUSY output) or slave (BUSY input) mode; semaphore access requires CE = VIH and SEM = VIL, while RAM access requires CE = VIL and SEM = VIH. The device operates at 5.0 V ±10% with TTL-compatible inputs and push-pull BUSY/INT outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8K × 8 bits (64 Kbit), organized as two independent 8K-word × 8-bit ports |
| Access Time (tRC) | 25 ns max - defines minimum read cycle interval for full-speed operation |
| Supply Voltage | 4.5 V to 5.5 V - single 5 V ±10% rail, compatible with legacy TTL logic families |
| Standby Current (ISB3) | 0.2 mA typ - ultra-low power full standby mode with CMOS-level inputs |
| Data Retention | 2 V min - retains data during brown-out or battery backup with ≤4 mA ICCDR |
| Operating Temp | −40°C to +85°C - industrial temperature grade, qualified per MIL-PRF-38535 QML |
| Package | 64-pin thin quad flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body |
Pinout & Package
7005L25PFI is housed in a 64-pin thin quad flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm footprint, and exposed thermal pad. All VCC pins require local decoupling; all GND pins must be connected to ground plane.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access (0x0000–0x1FFF) |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit parallel data path; tri-stated when OEL = H or CEL = H |
| CEL, OEL, R/WL | Left port controls | Chip Enable, Output Enable, Read/Write Enable - active-low, TTL-compatible |
| BUSYL, INTL | Left port status flags | BUSY output (master) or input (slave); INTL is open-drain interrupt flag |
| SEML, M/S | Arbitration interface | SEM enable for 8-flag semaphore register; M/S selects master (H) or slave (L) role |
| A0R–A12R / I/O0R–I/O7R / CER / OER / R/WR / BUSYR / INTR / SEMR | Right port equivalents | Mirror left-port signals; enables symmetric dual-CPU memory sharing without glue logic |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables concurrent read/write access from two independent processors without external arbitration logic |
| Hardware semaphore support | Eight dedicated semaphore flags (addressed by A0–A2) with atomic read/write, eliminating software race conditions |
| Master/slave cascading | M/S pin allows seamless expansion to 16-bit+ data buses using multiple 7005L25PFI devices in master–slave configuration |
| 2 V data retention | Preserves memory contents during main power loss using backup battery, critical for fault-tolerant systems |
| Push-pull BUSY/INT outputs | Eliminates need for external pull-ups; provides deterministic timing for real-time interrupt response |
Applications
| Industrial PLC Controller | Military Avionics Data Bus |
|---|---|
|
Use Scenario: Dual-CPU redundancy architecture where primary and backup CPUs share status registers and command queues. IC Role / Device Role / Timing Role: Shared memory buffer with hardware arbitration ensures deterministic write conflict resolution and sub-25 ns inter-processor synchronization. Use Value: Eliminates software-based mutex overhead and guarantees atomic semaphore updates under EMI stress. |
Use Scenario: Real-time sensor fusion system requiring simultaneous access to inertial measurement unit (IMU) and GPS data buffers. IC Role / Device Role / Timing Role: Dual-port SRAM serves as time-critical shared scratchpad between flight control and navigation processors. Use Value: 25 ns tRC and −40°C to +85°C operation ensure deterministic latency in mission-critical avionics loops. |
| Medical Imaging Subsystem | Telecom Baseband Processor |
|
Use Scenario: MRI scanner front-end where acquisition processor writes raw ADC samples while reconstruction engine reads them. IC Role / Device Role / Timing Role: High-bandwidth memory conduit with BUSY flag coordination prevents data corruption during overlapping DMA bursts. Use Value: Simultaneous read/write capability sustains >100 MB/s sustained throughput without FIFO bottlenecks. |
Use Scenario: 4G/LTE baseband modem with separate channel estimation and modulation/demodulation DSP cores. IC Role / Device Role / Timing Role: Shared coefficient table and symbol buffer accessed concurrently by two tightly coupled DSPs. Use Value: On-chip semaphore logic replaces discrete logic, reducing BOM count and PCB area in space-constrained RF modules. |
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, 3.3 V core (5 V tolerant I/O) | Wider data bus; requires level-shifting for 5 V-only systems; no native 2 V retention | Select for 16-bit systems needing higher bandwidth; avoid if 5 V-only supply or battery backup is required. |
| IDT70V25L25PF | Lower voltage (3.3 V), 25 ns tRC, same 64-pin TQFP, but -40°C to +85°C industrial grade only | No 2 V data retention; incompatible with 5 V logic families without translation | Choose for lower power in 3.3 V designs; not suitable as drop-in replacement for 7005L25PFI in legacy 5 V systems. |
Compared with CY7C028V-25AXC and IDT70V25L25PF, the 7005L25PFI uniquely combines 5 V TTL compatibility, 2 V data retention, and industrial temperature range in a 64-pin TQFP-making it irreplaceable in legacy military and industrial dual-CPU platforms requiring zero-battery-current standby.
Availability
7005L25PFI is available at Aetrix Electronics and suitable for industrial PLC controllers, military avionics subsystems, and medical imaging equipment requiring stable component supply across extended product lifecycles.
Supply support for 7005L25PFI 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 timing, memory, and interface solutions for communications, computing, and industrial markets.
The 7005L25PFI belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems demanding hardware-enforced arbitration and battery-backed data integrity.
FAQ
What is the maximum operating speed of the 7005L25PFI?
The 7005L25PFI has a guaranteed maximum read cycle time (tRC) of 25 ns across its full industrial temperature range (−40°C to +85°C), enabling reliable operation at up to 40 MHz sustained memory access rates when both ports are active and properly sequenced.
Does the 7005L25PFI support battery backup operation?
Yes, the 7005L25PFI supports true battery backup with data retention down to 2 V (VDR), drawing only 100 µA typical current (ICCDR) in retention mode-verified across military and industrial temperature grades per datasheet Table 9.
How does the M/S pin affect BUSY signal behavior on the 7005L25PFI?
When M/S = H, the 7005L25PFI operates as a master: BUSYL and BUSYR are push-pull outputs asserting during port contention. When M/S = L, it acts as a slave: BUSYL and BUSYR become inputs that inhibit writes when driven low by a master device-enabling hierarchical multi-device arbitration.
Can the 7005L25PFI perform simultaneous reads from both ports to the same memory address?
Yes, the 7005L25PFI uses true dual-port memory cells that allow completely independent, asynchronous reads from both left and right ports-even to identical addresses-with no timing penalty or bus contention, as confirmed in the Functional Block Diagram and Truth Table I.
What package type is used for the 7005L25PFI?
The 7005L25PFI is supplied in a 64-pin thin quad flatpack (TQFP) with 0.5 mm lead pitch, 14 mm × 14 mm body size, and 1.4 mm height-documented in Pin Configuration drawings 2738 drw 03 and ordering information section.
7005L25PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tube
- 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
7005L25PFI FAQ
1.How can I place an order for 7005L25PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7005L25PFI 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 7005L25PFI reliable?
The price and inventory of 7005L25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7005L25PFI is usually 5 days.
3.What payment methods are accepted for 7005L25PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7005L25PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7005L25PFI?
7005L25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7005L25PFI 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 7005L25PFI?
For technical support, including 7005L25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7005L25PFI requirements.
6.How does Aetrix verify that 7005L25PFI is sourced from the original manufacturer or authorized distributors?
All 7005L25PFI 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 7005L25PFI meets industry standards.
7.What is the process for return or replacement of 7005L25PFI?
All 7005L25PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7005L25PFI, 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 7005L25PFI part is unused and in its original packaging.
Return procedure for 7005L25PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7005L25PFI 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
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
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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