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Renesas 7025L25PF8
- Part No.:
- 7025L25PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
7025L25PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
7025L25PF8 from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with independent asynchronous left/right ports, 25 ns maximum read cycle time, 1 mW typical standby power, and TTL-compatible 5 V ±10% operation - used in real-time inter-processor communication, video frame buffers, and military-grade avionics data exchange systems.
For engineers reviewing the 7025L25PF8 datasheet, 7025L25PF8 pinout, 7025L25PF8 application, or 7025L25PF8 equivalent, key selection criteria include simultaneous port arbitration latency, BUSY/INT flag timing compliance, byte-selectable I/O control for multiplexed bus interfacing, and battery-backed 2 V data retention capability.
Technical Context
The 7025L25PF8 implements full hardware semaphore logic across both ports using dedicated SEM/INT/BUSY signals, enabling deterministic resource locking without external logic. Its on-chip arbitration resolves contention via address-match or chip-enable priority, with programmable M/S configuration for master/slave cascading in 32-bit+ memory systems.
It supports two distinct operational modes: standard RAM access (CE = VIL, SEM = VIH) and semaphore register access (CE = VIH or UB&LB = VIH, SEM = VIL), each with separate timing constraints - including tSAA ≤ 25 ns for semaphore address setup and tSWRD = 5 ns for flag write-to-read propagation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8,192 × 16 bits (128 Kbit), true dual-port with fully independent address/data/control paths per port |
| Access Time (tRC) | 25 ns max - guarantees sub-40 MHz sustained read/write throughput per port under worst-case commercial/military conditions |
| Standby Power | 1 mW typ. at VCC = 5 V - enables low-power hold mode during system sleep without external power gating |
| Data Retention | 2 V minimum VCC - retains valid data during brown-out or battery-backup operation down to 2 V supply |
| Operating Voltage | 4.5 V to 5.5 V - compatible with standard TTL logic families and legacy 5 V system rails |
| Temperature Range | –40°C to +85°C industrial grade - validated for embedded control and aerospace subsystems |
| Package | 84-pin PLCC (Plastic Leaded Chip Carrier) - surface-mount compatible with automated assembly and rework-friendly lead geometry |
Pinout & Package
7025L25PF8 is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with 0.050" lead pitch, 1.15" × 1.15" body size, and integrated heat-dissipating thermal pad. All VCC and GND pins are distributed across the perimeter for low-impedance power delivery and noise suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Active-low enable per port; deassertion places corresponding port in high-Z output and ultra-low ISB3 standby (0.2 mA typ.) |
| R/WL / R/WR | Read/Write Control (Left / Right) | Directly controls direction of data flow on I/O0–I/O15; no external direction logic required |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables independent 8-bit writes to upper (I/O8–I/O15) or lower (I/O0–I/O7) byte lanes - critical for multiplexed bus compatibility |
| SEML / SEMR | Semaphore Enable | Switches port between RAM array access (SEM = VIH) and 8-bit semaphore register access (SEM = VIL) |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | When M/S = H, BUSY outputs contention status; when M/S = L, BUSY input gates write cycles to prevent collision |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signaling semaphore state change or arbitration event - directly interfaces to MCU interrupt inputs |
| A0L–A12L / A0R–A12R | Address Inputs | 13-bit address bus per port (8K = 2¹³); supports independent addressing for concurrent reads/writes to same or different locations |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O Bidirectional Bus | 16-bit parallel data path per port; internally isolated to prevent cross-port coupling during simultaneous access |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables zero-wait-state concurrent read/write operations on both ports - eliminates software polling or handshake overhead in inter-processor links |
| Hardware Semaphore Logic | Eight dedicated semaphore flags accessed via A0–A2 address lines - provides atomic resource locking without CPU intervention or external latches |
| Master/Slave Cascading Support | M/S pin configures device as master (BUSY output) or slave (BUSY input) - allows seamless expansion to 32-bit+ data width with no glue logic |
| Asynchronous Port Operation | No shared clock required between ports - simplifies integration into heterogeneous systems with mismatched timing domains (e.g., DSP + FPGA) |
| Battery Backup Data Retention | Valid data held at 2 V VCC - supports fail-safe logging during main power loss in flight control or medical monitoring systems |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion data and actuator commands in hard real-time loop. IC Role / Device Role / Timing Role: Shared memory buffer with hardware arbitration ensures deterministic message passing without race conditions. Use Value: Eliminates need for UART/SPI handshaking delays; 25 ns access enables >35 MB/s bidirectional throughput per port. | Use Scenario: Digital video processor writes captured frames while display controller reads previous frame for overlay rendering. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong frame buffer with independent write/read clocks. Use Value: Prevents frame tearing; byte-select enables partial updates (e.g., OSD overlay only) without full-frame rewrite. |
| Military Avionics Data Exchange | Industrial PLC I/O Mapping |
Use Scenario: Flight management computer and navigation unit share telemetry and waypoint data in MIL-STD-1553B-adjacent subsystems. IC Role / Device Role / Timing Role: Radiation-tolerant dual-port RAM with –40°C to +85°C operation serves as secure shared register bank. Use Value: BUSY/INT flags provide hardware-enforced mutual exclusion; 2 V retention preserves last-known-good state during transient power faults. | Use Scenario: Programmable logic controller synchronizes input scan and output update cycles across multiple I/O modules. IC Role / Device Role / Timing Role: Centralized I/O image memory with semaphore-controlled access prevents inconsistent state reads during update. Use Value: Reduces scan cycle jitter by 100% vs. software mutex; 1 mW standby cuts panel-level power budget by >200 µW per node. |
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 access, 8K × 16, but uses 100-pin TQFP and requires external arbitration logic for semaphore emulation | Lacks native BUSY/INT flags and hardware semaphores - increases PCB area and firmware complexity | Choose only if footprint compatibility with existing 100-pin layouts is mandatory and arbitration can be handled in software |
| IDT70V25L25PF | Same 8K × 16 organization and 25 ns speed, but LVDS-compatible 3.3 V core with 5 V tolerant I/O | Lower active power (350 mW typ.), but incompatible with pure 5 V systems without level translation | Select when migrating to lower-voltage platforms and mixed-signal isolation is acceptable |
Compared with CY7C028V-25AXC and IDT70V25L25PF, the 7025L25PF8 delivers native hardware semaphore support and 5 V TTL compatibility in a compact 84-pin PLCC - making it optimal for cost-sensitive, legacy 5 V designs requiring deterministic inter-processor synchronization without added logic.
Availability
7025L25PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, video frame buffering, and military avionics data exchange requiring stable component supply across extended product lifecycles.
Supply support for 7025L25PF8 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 IDT7025 family was engineered for deterministic, low-latency shared-memory architectures in safety-critical and real-time systems - emphasizing hardware arbitration, battery backup, and ruggedized temperature operation.
FAQ
What is the maximum operating temperature range certified for the 7025L25PF8?
7025L25PF8 is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications and qualified for use in automotive engine control units, industrial PLCs, and outdoor telecom infrastructure where ambient thermal stress exceeds commercial-grade limits.
Does the 7025L25PF8 support true simultaneous read access to the same memory location from both ports?
Yes, the 7025L25PF8 implements true dual-ported memory cells that allow concurrent reads from identical addresses on left and right ports without contention or data corruption - a core architectural feature confirmed in the functional block diagram and truth tables of the official datasheet.
How does the BUSY signal function when the 7025L25PF8 is configured as a slave device?
When M/S = L (slave mode), BUSY becomes an input signal that must be driven high by the master device to gate write operations - preventing simultaneous writes during arbitration. This behavior is explicitly defined in Note 1 of the Functional Block Diagram and validated in Truth Table II timing constraints.
What is the minimum supply voltage required to retain valid data in the 7025L25PF8 during power loss?
The 7025L25PF8 guarantees data retention down to 2.0 V VCC, as specified in Table 10 (Data Retention Characteristics). This enables reliable operation with coin-cell backup or capacitor hold-up circuits in mission-critical systems where uninterrupted state preservation is mandatory.
Can the 7025L25PF8 be used in a 32-bit data bus configuration without external logic?
Yes - the 7025L25PF8 supports master/slave cascading via the M/S pin and BUSY flag signaling, allowing two devices to be combined into a 8K × 32-bit configuration with full-speed, error-free operation and no discrete logic required, as stated in the device description section of the datasheet.
7025L25PF8 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:
- 25ns
- Access Time:
- 25 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)
7025L25PF8 FAQ
1.How can I place an order for 7025L25PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7025L25PF8 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 7025L25PF8 reliable?
The price and inventory of 7025L25PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7025L25PF8 is usually 5 days.
3.What payment methods are accepted for 7025L25PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7025L25PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7025L25PF8?
7025L25PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7025L25PF8 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 7025L25PF8?
For technical support, including 7025L25PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7025L25PF8 requirements.
6.How does Aetrix verify that 7025L25PF8 is sourced from the original manufacturer or authorized distributors?
All 7025L25PF8 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 7025L25PF8 meets industry standards.
7.What is the process for return or replacement of 7025L25PF8?
All 7025L25PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 7025L25PF8, 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 7025L25PF8 part is unused and in its original packaging.
Return procedure for 7025L25PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7025L25PF8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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