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Renesas 70V25L20PFI
- Part No.:
- 70V25L20PFI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V25L20PFI.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,546
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Product details
Overview
IDT70V25L20PFI from Integrated Device Technology is a high-speed 4K x 16 true dual-port static RAM operating at 3.3V, with 20ns maximum access time (industrial grade), 400mW typical active power, and 660μW typical standby power. It supports fully asynchronous, independent read/write operations on left and right ports, enabling real-time inter-processor communication in embedded control systems.
For engineers reviewing the IDT70V25L20PFI datasheet, IDT70V25L20PFI pinout, IDT70V25L20PFI application, or IDT70V25L20PFI equivalent, key selection criteria include dual-port arbitration logic, on-chip semaphore support, byte-selectable I/O (UBL/LBL), BUSY/INT flag signaling, and industrial temperature operation (–40°C to +85°C).
Technical Context
The IDT70V25L20PFI implements full hardware port arbitration with MASTER/SLAVE cascading capability via M/S pin, enabling 32-bit+ memory expansion without external logic. Its dual independent address/data/control paths allow simultaneous access to the same memory location - a core requirement for lock-free shared-memory IPC.
It integrates dedicated semaphore logic (8 flags, addressed by A0–A2) with contention window timing (tSPS = 5ns) and write-to-read latency (tSWRD = 5ns), alongside separate upper- and lower-byte enables (UBL/LBL) for multiplexed bus compatibility and LVTTL-level 3.3V I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16-bit (64 Kbit), true dual-port SRAM |
| Access Time (max) | 20 ns - guarantees deterministic response for real-time interrupt handlers and DSP co-processors |
| Supply Voltage | 3.3 V ± 0.3 V - compatible with modern low-voltage digital systems; no level-shifting required |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, motor drives, and telecom infrastructure |
| Active Power (typ) | 400 mW - enables thermal management in dense PCB layouts without forced cooling |
| Standby Power (typ) | 660 μW - supports ultra-low-power sleep modes in battery-backed or energy-conscious systems |
| I/O Interface | LVTTL-compatible - ensures direct interfacing with FPGA I/O banks and microcontroller GPIOs |
Pinout & Package
Packaged in a 100-pin TQFP (PNG100), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port activation; enables selective power-down of unused port |
| R/WL / R/WR | Read/Write Control (Left / Right) | Asynchronous direction control per port; no shared bus turnaround delay |
| OEL / OER | Output Enable (Left / Right) | Tri-state control for data bus sharing; avoids contention during multi-master cycles |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables 8-bit sub-word access - critical for mixed-width peripheral interfacing |
| SEML / SEMR | Semaphore Enable | Activates 8-flag hardware mutex; eliminates software polling overhead in RTOS environments |
| BUSYL / BUSYR | Busy Flag (Input/Output) | Hardware handshake for port arbitration; M/S = VIH → output (Master), VIL → input (Slave) |
| INTL / INTR | Interrupt Flag | Open-drain push-pull output signals semaphore state change or write completion |
| A0L–A11L, A0R–A11R | Address Inputs | 12-bit addressing per port (4K depth); A12 is NC per datasheet Note 1 |
| I/O0L–I/O7L, I/O0R–I/O7R | Data I/O (Lower Byte) | 8-bit bidirectional data path per port; matches standard microcontroller data bus width |
| I/O8L–I/O15L, I/O8R–I/O15R | Data I/O (Upper Byte) | Second 8-bit data path; enables full 16-bit parallel transfer when both bytes enabled |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent reads/writes to same address - eliminates software locks and improves IPC throughput |
| On-Chip Semaphore Logic | Eight hardware-mutex flags with 5ns contention window (tSPS) - ensures deterministic resource allocation in hard real-time systems |
| Master/Slave Cascading | M/S pin configures device as Master (BUSY output) or Slave (BUSY input) - enables seamless 32-bit+ memory expansion without glue logic |
| Byte-Selectable I/O Control | Separate UBL/LBL enables per port - supports legacy 8-bit peripherals and mixed-data-width system integration |
| Ultra-Low Standby Power | 660 μW typical ISB3 - extends battery life in always-on monitoring nodes and maintains data retention during deep sleep |
Applications
| Industrial PLC Communication Module | DSP-FPGA Co-Processing Interface |
|---|---|
Use Scenario: Two independent processors (e.g., ARM Cortex-M7 and FPGA) share configuration tables and sensor buffers in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared memory with hardware semaphore coordination between heterogeneous cores. Use Value: Eliminates software-based mutex polling; 20ns access ensures sub-microsecond inter-core message latency under worst-case timing. | Use Scenario: FPGA performs high-speed signal acquisition while DSP executes real-time filtering algorithms on streaming data. IC Role / Device Role / Timing Role: IDT70V25L20PFI serves as ping-pong buffer with independent read/write ports - FPGA writes to one half while DSP reads from the other. Use Value: Full 16-bit parallel interface and 20ns access enable sustained 50 MB/s data transfer without DMA bottlenecks or FIFO overflow. |
| Motor Drive Controller Shared Memory | Telecom Line Card Inter-Processor Link |
Use Scenario: Safety-critical motion controller and diagnostics processor exchange status, fault logs, and calibration parameters. IC Role / Device Role / Timing Role: Dual-port RAM provides atomic read-modify-write access to shared registers using on-chip semaphores. Use Value: Hardware semaphore (tSWRD = 5ns) guarantees atomicity across CPU boundaries - meets IEC 61508 SIL-3 timing requirements. | Use Scenario: Multiple line cards in a carrier-grade switch exchange routing updates and statistics via backplane-linked processors. IC Role / Device Role / Timing Role: IDT70V25L20PFI functions as a mailbox memory with BUSY/INT handshaking between distributed control CPUs. Use Value: 660μW standby power and industrial temp rating ensure reliable operation in fanless, thermally constrained chassis environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-20ZXC | 4K × 16, 20ns, 3.3V, but uses different pinout (100-pin TQFP, non-identical signal mapping) and lacks integrated BUSY arbitration logic | Requires external logic for MASTER/SLAVE cascading; no native semaphore support - increases BOM count and firmware complexity | Choose only if existing layout accommodates pin reassignment and software handles semaphore emulation |
| AS7C34098B-20TIN | 4K × 16, 20ns, 3.3V, but rated only for commercial temperature (0°C to +70°C) and has higher standby current (5 mA vs. 0.66 mA) | Not suitable for industrial environments requiring –40°C operation or ultra-low-power sleep states | Select only for cost-sensitive, non-industrial applications where ambient temperature remains controlled |
Compared with CY7C1362BV33-20ZXC and AS7C34098B-20TIN, the IDT70V25L20PFI delivers unique value through integrated hardware arbitration, industrial temperature qualification, and 10× lower standby power - making it the optimal choice for robust, real-time embedded systems where reliability and power efficiency are critical.
Availability
IDT70V25L20PFI is available at Aetrix Electronics and suitable for industrial PLCs, motor drive controllers, telecom line cards, and DSP-FPGA co-processing platforms requiring stable component supply, long-term lifecycle support, and guaranteed industrial-grade performance.
Supply support for IDT70V25L20PFI 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 high-performance computing solutions.
The IDT70V25 family was designed specifically for real-time inter-processor communication in industrial automation, telecommunications, and embedded control - emphasizing deterministic timing, hardware arbitration, and low-power operation.
FAQ
What is the maximum operating temperature range for the IDT70V25L20PFI?
The IDT70V25L20PFI is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table (page 6) and Operating Conditions table (page 7) of the official IDT datasheet DSC-5624/10. The 'I' suffix in the part number explicitly denotes industrial grade, and thermal validation ensures reliable performance across this full range without derating.
Does the IDT70V25L20PFI support true simultaneous access to the same memory location from both ports?
Yes, the IDT70V25L20PFI implements true dual-port SRAM cells that permit simultaneous reads of the same memory location from left and right ports without contention or data corruption. This capability is explicitly stated in the Features section ("True Dual-Ported memory cells which allow simultaneous reads of the same memory location") and is fundamental to its use in real-time inter-processor communication where deterministic latency is required.
What is the function of the M/S pin on the IDT70V25L20PFI?
The M/S (Master/Slave) pin configures the IDT70V25L20PFI's BUSY signal behavior: when driven high (VIH), BUSY becomes an output flag indicating internal port contention (Master mode); when driven low (VIL), BUSY becomes an input used for daisy-chained arbitration in multi-device configurations (Slave mode). This is documented in the Functional Block Diagram notes and Pin Names table (page 5) of the datasheet.
How does the IDT70V25L20PFI implement hardware semaphore functionality?
The IDT70V25L20PFI includes eight dedicated hardware semaphore flags accessed via A0–A2 address lines and controlled by the SEM pin. When SEM = VIL and CE = VIH (or UB & LB = VIH), the device enters semaphore mode - allowing atomic read/write of flag states with guaranteed 5ns contention window (tSPS) and 5ns write-to-read latency (tSWRD), as specified in Truth Table II and AC Characteristics (pages 5 and 12).
Is the IDT70V25L20PFI pin-compatible with other members of the IDT70V25/24 family?
Yes, the IDT70V25L20PFI shares the same 100-pin TQFP (PNG100) package and identical pinout with all IDT70V25/24 variants, including IDT70V25S20PFI and IDT70V24L25PFI. Pin compatibility is confirmed by the unified "IDT70V25/24" Pin Configuration diagram (page 3) and Note 1 stating "A12 is a NC for IDT70V24", which applies uniformly across the family in this package.
70V25L20PFI 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:
- 20ns
- Access Time:
- 20 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)
70V25L20PFI FAQ
1.How can I place an order for 70V25L20PFI through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V25L20PFI 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 70V25L20PFI reliable?
The price and inventory of 70V25L20PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V25L20PFI is usually 5 days.
3.What payment methods are accepted for 70V25L20PFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V25L20PFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V25L20PFI?
70V25L20PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V25L20PFI 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 70V25L20PFI?
For technical support, including 70V25L20PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V25L20PFI requirements.
6.How does Aetrix verify that 70V25L20PFI is sourced from the original manufacturer or authorized distributors?
All 70V25L20PFI 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 70V25L20PFI meets industry standards.
7.What is the process for return or replacement of 70V25L20PFI?
All 70V25L20PFI units undergo pre-shipment inspection (PSI). If there is an issue with 70V25L20PFI, 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 70V25L20PFI part is unused and in its original packaging.
Return procedure for 70V25L20PFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V25L20PFI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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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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