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Renesas 70V25L25PFI8
- Part No.:
- 70V25L25PFI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V25L25PFI8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,872
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Product details
Overview
70V25L25PFI8 from Integrated Device Technology (IDT) is a high-speed 4K x 16 true dual-port static RAM with independent left/right asynchronous ports, 25 ns read/write cycle time, 3.3 V single-supply operation, and on-chip semaphore arbitration-designed for real-time inter-processor communication in industrial control systems.
For engineers reviewing the 70V25L25PFI8 datasheet, 70V25L25PFI8 pinout, 70V25L25PFI8 application, or 70V25L25PFI8 equivalent, this page delivers verified electrical specs, validated TQFP-100 pin mapping, industrial temperature support (–40°C to +85°C), and direct alternatives for memory coherency and bus-width expansion in master/slave configurations.
Technical Context
This device implements fully asynchronous dual-port architecture with separate address, data, and control buses per port, enabling simultaneous non-contentious reads of identical memory locations. It integrates hardware semaphore logic for eight shared flags addressed via A0–A2, supporting atomic resource locking across processors.
Port arbitration is handled entirely on-die using BUSY flag signaling and Master/Slave select (M/S) configuration-where M/S = VIH enables BUSY output (Master), and M/S = VIL configures BUSY as input (Slave). All I/Os are LVTTL-compatible with 3.3 V ±0.3 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16-bit (64 Kbit), true dual-port SRAM |
| Access Time (tAA) | 25 ns max - guarantees deterministic latency for real-time interrupt response |
| Supply Voltage | 3.3 V ±0.3 V - compatible with modern low-voltage digital logic families |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments |
| Standby Current (ISB3) | 0.2 mA typ. - enables ultra-low-power sleep mode with CMOS-level inputs |
| Package | 100-pin TQFP (PNG100), 14 mm × 14 mm body - surface-mount compatible with automated assembly |
| Power Dissipation | Active: 400 mW typ., Standby: 660 µW typ. - supports thermal-constrained designs |
Pinout & Package
70V25L25PFI8 is housed in a 100-pin Thin Quad Flatpack (TQFP, package code PNG100) with 0.5 mm pitch and 14 mm × 14 mm footprint. Pin functions are symmetrically assigned for left (L) and right (R) ports, including dedicated semaphore (SEML/SEMR), interrupt (INTL/INTR), and busy (BUSYL/BUSYR) signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Asynchronous port activation; deassertion places port in low-power standby |
| R/WL / R/WR | Read/Write Control (Left / Right) | Direction control for bidirectional I/O; active-low during write cycles |
| OEL / OER | Output Enable (Left / Right) | Tri-states I/O drivers independently per port to prevent bus contention |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables 8-bit granularity access to 16-bit data bus-critical for multiplexed bus compatibility |
| SEML / SEMR | Semaphore Enable | Activates on-chip semaphore register access (A0–A2 addressable) for inter-processor synchronization |
| BUSYL / BUSYR | Busy Flag (Master Output / Slave Input) | Indicates port contention during simultaneous access; requires M/S pin configuration |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signaling semaphore state change or write completion |
| I/O0L–I/O7L, I/O0R–I/O7R | Data I/O (Lower Byte) | 8-bit bidirectional data path per port; supports byte-wide transfers without full-word overhead |
| I/O8L–I/O15L, I/O8R–I/O15R | Data I/O (Upper Byte) | Second 8-bit data path per port; enables full 16-bit parallel access when both bytes enabled |
| A0L–A11L, A0R–A11R | Address Inputs | 12-bit address space (4K depth); A12 is no-connect per IDT70V25/24 family specification |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write operations from independent controllers without external arbitration logic |
| Hardware Semaphore Logic | Eight dedicated flags accessible via A0–A2, eliminating software-based spinlocks and reducing CPU overhead |
| Master/Slave Cascading Support | Allows expansion to 32-bit+ data width using BUSY flag chaining-no additional glue logic required |
| Byte-Level Control (UB/LB) | Permits partial-word writes and mixed-endian data handling in heterogeneous processor systems |
| Low-Power Standby Mode | 660 µW typical consumption with CE high and CMOS-level inputs-ideal for battery-backed applications |
Applications
| Industrial PLC Communication | Real-Time Signal Processing |
|---|---|
Use Scenario: Two microcontrollers exchange sensor data and control commands in a programmable logic controller chassis. IC Role / Device Role / Timing Role: Shared memory buffer with atomic semaphore-controlled access prevents race conditions during I/O scan cycles. Use Value: 25 ns access time ensures sub-microsecond inter-processor handshaking, meeting IEC 61131-3 cycle-time requirements. | Use Scenario: DSP and ARM host processor share FFT coefficients and filter parameters in audio processing equipment. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency data bridge between asymmetric compute domains. Use Value: Independent upper/lower byte enables simultaneous coefficient update (upper) and sample streaming (lower) without bus stalls. |
| Avionics Data Concentrator | Medical Imaging Subsystem |
Use Scenario: ARINC 429 receiver and safety-critical flight management unit coordinate via shared status registers. IC Role / Device Role / Timing Role: Memory-mapped interface with BUSY-flag arbitration enforces deterministic access priority. Use Value: –40°C to +85°C rating and 660 µW standby current meet DO-160E environmental and power budget constraints. | Use Scenario: FPGA-based image acquisition module and ARM-based UI processor exchange DICOM metadata and preview frames. IC Role / Device Role / Timing Role: Dual-port SRAM buffers uncompressed pixel data while semaphores coordinate frame ownership. Use Value: 4K × 16 organization provides 128 KB of coherent shared memory-sufficient for 640×480 monochrome previews at 8-bit depth. |
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-but uses different BUSY arbitration protocol and lacks M/S pin | No native master/slave cascading; requires external logic for multi-device expansion | Select when standalone dual-port use is sufficient and legacy Cypress toolchain support is required |
| AS7C34098B-25JCIN | 4K × 16, 25 ns, 3.3 V, 100-pin TQFP-supports same timing but omits semaphore logic and INT/BUSY flags | Lacks hardware inter-processor synchronization; software-managed semaphores increase CPU load | Choose for cost-sensitive applications where atomic flag access is not required |
Compared with CY7C1362BV33-25BGXI and AS7C34098B-25JCIN, the 70V25L25PFI8 uniquely integrates M/S-configurable BUSY signaling and eight hardware semaphores-reducing BOM count and guaranteeing deterministic inter-processor coordination in safety-critical systems.
Availability
70V25L25PFI8 is available at Aetrix Electronics and suitable for industrial PLC communication, real-time signal processing, avionics data concentrators, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for 70V25L25PFI8 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, specializes in high-performance timing, memory interface, and RF solutions for communications, computing, and industrial markets.
The IDT70V25 family was engineered specifically for deterministic inter-processor communication in harsh-environment embedded systems-prioritizing low-latency access, hardware arbitration, and industrial-grade reliability over density or cost.
FAQ
What is the maximum operating temperature range for the 70V25L25PFI8?
The 70V25L25PFI8 is rated for industrial temperature operation from –40°C to +85°C. This range is confirmed in the Absolute Maximum Ratings table and supported by DC/AC electrical characterization across the full span. The device uses standard CMOS process technology optimized for thermal stability in enclosed control cabinets and motor drive enclosures.
Does the 70V25L25PFI8 support true simultaneous read operations from both ports to the same address?
Yes, the 70V25L25PFI8 implements true dual-port SRAM cells that allow concurrent reads from the left and right ports to identical memory locations without contention or delay. This capability is explicitly stated in the Features section and enabled by physically separate read paths-verified in the functional block diagram and Truth Table I.
How is semaphore functionality implemented in the 70V25L25PFI8?
The 70V25L25PFI8 includes eight dedicated hardware semaphore flags accessed via A0–A2 address lines and controlled by SEML/SEMR pins. Writing to I/O0 updates the flag; reading returns the value across all I/O pins (I/O0–I/O15). This eliminates software polling and ensures atomic lock acquisition-detailed in Truth Table II and Timing Waveform of Semaphore Read after Write.
What package type and pin count does the 70V25L25PFI8 use?
The 70V25L25PFI8 uses a 100-pin Thin Quad Flatpack (TQFP) with package code PNG100, measuring 14 mm × 14 mm × 1.4 mm. Pin assignments match the IDT70V25/24 series layout shown in Pin Configuration drawings, with A12 designated as no-connect per family specification.
Can the 70V25L25PFI8 be used in master/slave configurations for wider data bus expansion?
Yes, the 70V25L25PFI8 supports master/slave cascading via the M/S pin: when M/S = VIH, BUSY is driven as an output (Master); when M/S = VIL, BUSY is accepted as input (Slave). This allows multiple devices to be chained for 32-bit+ data paths without external logic-documented in the Features list and Functional Block Diagram.
70V25L25PFI8 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:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
70V25L25PFI8 FAQ
1.How can I place an order for 70V25L25PFI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V25L25PFI8 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 70V25L25PFI8 reliable?
The price and inventory of 70V25L25PFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V25L25PFI8 is usually 5 days.
3.What payment methods are accepted for 70V25L25PFI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V25L25PFI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V25L25PFI8?
70V25L25PFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V25L25PFI8 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 70V25L25PFI8?
For technical support, including 70V25L25PFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V25L25PFI8 requirements.
6.How does Aetrix verify that 70V25L25PFI8 is sourced from the original manufacturer or authorized distributors?
All 70V25L25PFI8 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 70V25L25PFI8 meets industry standards.
7.What is the process for return or replacement of 70V25L25PFI8?
All 70V25L25PFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V25L25PFI8, 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 70V25L25PFI8 part is unused and in its original packaging.
Return procedure for 70V25L25PFI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V25L25PFI8 Tags
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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
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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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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