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Renesas 70V25L25PFI
- Part No.:
- 70V25L25PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V25L25PFI.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,691
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Product details
Overview
70V25L25PFI from IDT (Integrated Device Technology) is a high-speed 4K x 16 true dual-port static RAM with independent left/right asynchronous ports, 25 ns maximum access time (industrial grade), 3.3 V single supply, and integrated semaphore arbitration logic. It enables simultaneous read/write access to the same memory location in real-time embedded systems requiring deterministic inter-processor communication.
For engineers reviewing the 70V25L25PFI datasheet, 70V25L25PFI pinout, 70V25L25PFI application, or 70V25L25PFI equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), low standby power (660 µW typ.), TQFP-100 package compatibility, and native support for MASTER/SLAVE cascading in 32-bit memory expansion.
Technical Context
The 70V25L25PFI implements fully asynchronous dual-port architecture with separate address, data, and control buses per port - enabling concurrent, independent read/write operations without external arbitration logic. Its on-chip arbitration resolves port contention via BUSY flag signaling and supports both master/slave configuration and semaphore-based resource locking across processors.
It operates exclusively from a single 3.3 V ±0.3 V supply, uses LVTTL-compatible I/Os, and features automatic power-down via chip enable (CE) control per port. The device includes dedicated upper-byte (UBR/UBL) and lower-byte (LBR/LBL) enables, interrupt flags (INTR/INTL), and semaphore enable (SEMR/SEML) for synchronized multi-core resource management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16 bits (64 Kbit total); supports independent 16-bit data paths per port |
| Access Time (tAA) | 25 ns max (industrial temp, VDD = 3.3 V); guarantees deterministic latency for real-time control loops |
| Supply Voltage | 3.3 V ±0.3 V; compatible with modern low-voltage digital systems without level-shifting |
| Standby Current | 660 µW typical (ISB3 full standby); enables ultra-low-power sleep modes in battery-backed systems |
| Operating Temperature | –40°C to +85°C; qualified for industrial automation, avionics, and motor control environments |
| Package | 100-pin TQFP (PNG100); 14 mm × 14 mm footprint with standard surface-mount assembly compatibility |
| I/O Interface | LVTTL-compatible; direct interfacing with FPGA, DSP, and microcontroller GPIO without buffers |
Pinout & Package
70V25L25PFI is housed in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100), measuring 14 mm × 14 mm × 1.4 mm, with exposed pad thermal design and standard JEDEC-compliant land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Independent port activation; each port enters low-power mode when its CE is high |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low signal determining data direction per port; enables true asynchronous dual operation |
| OEL / OER | Output Enable (Left/Right) | Controls output drivers independently; allows one port to drive while the other remains high-Z |
| UBL / UBR | Upper-Byte Select (Left/Right) | Enables I/O[8–15] only; supports byte-level granularity for mixed-width bus interfacing |
| LBL / LBR | Lower-Byte Select (Left/Right) | Enables I/O[0–7] only; permits partial writes and avoids bus contention in multiplexed systems |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates 8-bit hardware semaphore register for inter-processor synchronization without software overhead |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Open-drain push-pull output indicating port contention; used for hardware handshaking in master/slave topologies |
| INTL / INTR | Interrupt Flag (Left/Right) | Signals completion of semaphore write or user-defined event; reduces polling overhead in RTOS environments |
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit address bus per port; supports full 4K addressing with no external decoding |
| I/O0L–I/O15L / I/O0R–I/O15R | Data I/O (Left/Right) | 16-bit bidirectional data path per port; true dual-port cell structure allows simultaneous reads of same location |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Memory Cells | Enables simultaneous read access to identical memory addresses by both ports - critical for lock-free inter-processor data sharing |
| On-Chip Semaphore Logic | Hardware-managed 8-bit semaphore register (addressed by A0–A2) eliminates need for external arbitration ICs or software mutexes |
| Master/Slave Cascading Support | M/S pin configures BUSY as output (master) or input (slave), enabling seamless 32-bit+ memory expansion without glue logic |
| Separate Byte Enables (UB/LB) | Allows independent control of upper/lower bytes per port - essential for legacy 8-bit peripheral interfacing alongside 16-bit CPUs |
| Low-Power Standby Mode | 660 µW typical ISB3 current enables energy-efficient operation in always-on industrial gateways and edge controllers |
Applications
| Industrial PLC Communication Module | Avionics Flight Control Unit |
|---|---|
Use Scenario: Two independent processors (e.g., safety-critical MCU and diagnostics co-processor) share status registers and sensor buffers in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, contention-free shared memory with hardware semaphore coordination. Use Value: Eliminates software polling delays and race conditions; 25 ns access ensures sub-microsecond inter-processor response in closed-loop control. | Use Scenario: Redundant flight computers exchange actuator commands and health telemetry via shared memory with guaranteed atomicity. IC Role / Device Role / Timing Role: Provides fault-tolerant, non-blocking memory interface with BUSY flag handshake and interrupt-driven synchronization. Use Value: Meets DO-254 timing assurance requirements; -40°C to +85°C rating supports wide environmental operating range. |
| Medical Imaging Data Buffer | Test & Measurement Equipment |
Use Scenario: High-speed ADC streams raw image data into one port while DSP processes and reads from the other port continuously. IC Role / Device Role / Timing Role: Acts as zero-latency ping-pong buffer with independent clock domains and no FIFO depth limitations. Use Value: Sustains continuous 16-bit data throughput at >40 MB/s (tRC = 25 ns), avoiding pipeline stalls during real-time reconstruction. | Use Scenario: Embedded controller acquires waveform samples via one port while host PC reads processed results via second port over parallel bus. IC Role / Device Role / Timing Role: Bridges disparate subsystems with independent timing domains and hardware-controlled resource arbitration. Use Value: Enables deterministic data capture and retrieval without CPU intervention; TQFP-100 simplifies layout in compact benchtop instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-25BGXI | 4K × 16, 25 ns, 3.3 V, 100-pin TQFP - identical speed/temp/package but Cypress implementation with different BUSY polarity and no M/S pin | Requires redesign of arbitration logic due to active-high BUSY and absence of master/slave configuration pin | Select only if existing board uses Cypress timing conventions and external arbitration is acceptable |
| AS7C34098B-25TIN | 4K × 16, 25 ns, 3.3 V, 100-pin TQFP - lacks semaphore logic, no BUSY flag, and no M/S support; requires external arbitration IC | Suitable only for simple dual-CPU systems where software-managed semaphores are acceptable and deterministic hardware handshake is not required | Choose only for cost-sensitive designs where arbitration latency is non-critical and firmware overhead is acceptable |
Compared with CY7C1362BV33-25BGXI and AS7C34098B-25TIN, the 70V25L25PFI uniquely delivers integrated master/slave configuration, hardware semaphore registers, and true BUSY-flag arbitration - reducing BOM count and guaranteeing sub-25 ns inter-processor coordination in safety-critical systems.
Availability
70V25L25PFI is available at Aetrix Electronics and suitable for industrial PLC communication modules, avionics flight control units, and medical imaging data buffers requiring stable component supply across extended product lifecycles.
Supply support for 70V25L25PFI 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.
The IDT70V25 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, industrial temperature reliability, and seamless bus-width scalability.
FAQ
What is the maximum operating temperature range for the 70V25L25PFI?
The 70V25L25PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including access time (25 ns max), standby current (660 µW typ.), and I/O voltage thresholds. The device uses IDT's CMOS high-performance process to ensure parametric stability across this full range without derating.
Does the 70V25L25PFI support cascading multiple devices for wider data buses?
Yes, the 70V25L25PFI supports cascading via its M/S (Master/Slave) pin to expand memory width beyond 16 bits. When configured as Master (M/S = VIH), BUSY is an output flag; as Slave (M/S = VIL), BUSY becomes an input. This enables error-free 32-bit+ memory systems using multiple 70V25L25PFI devices without external glue logic or timing compensation.
How does the semaphore functionality work in the 70V25L25PFI?
The 70V25L25PFI integrates eight hardware semaphore flags accessible via I/O[0] and addressed by A0–A2. Semaphore access is enabled by asserting SEM = VIL while holding UB & LB = VIH or CE = VIH. Each flag can be atomically written and read, providing lock-free synchronization between processors without software overhead or risk of race conditions.
What is the standby power consumption of the 70V25L25PFI in full standby mode?
In full standby mode (both ports disabled with CMOS-level inputs, f = 0), the 70V25L25PFI consumes 0.2 µA typical and 5 µA maximum (ISB3). This ultra-low current enables long-term battery backup in industrial controllers and medical devices where memory retention must persist during main power loss without significant drain.
Is the 70V25L25PFI pin-compatible with other members of the IDT70V25/24 family?
Yes, the 70V25L25PFI shares identical pinout and package (100-pin TQFP) with all IDT70V25/24 variants including 70V25S15, 70V25L20, and 70V24L25. Differences are limited to speed grade (15/20/25/35/55 ns) and power suffix (S = standard, L = low-power), allowing drop-in replacement within the same speed bin and temperature grade without PCB modification.
70V25L25PFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
70V25L25PFI FAQ
1.How can I place an order for 70V25L25PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V25L25PFI 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 70V25L25PFI reliable?
The price and inventory of 70V25L25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V25L25PFI is usually 5 days.
3.What payment methods are accepted for 70V25L25PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V25L25PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V25L25PFI?
70V25L25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V25L25PFI 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 70V25L25PFI?
For technical support, including 70V25L25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V25L25PFI requirements.
6.How does Aetrix verify that 70V25L25PFI is sourced from the original manufacturer or authorized distributors?
All 70V25L25PFI 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 70V25L25PFI meets industry standards.
7.What is the process for return or replacement of 70V25L25PFI?
All 70V25L25PFI units undergo pre-shipment inspection (PSI). If there is an issue with 70V25L25PFI, 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 70V25L25PFI part is unused and in its original packaging.
Return procedure for 70V25L25PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V25L25PFI Tags
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