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Renesas 70V25L20PF8
- Part No.:
- 70V25L20PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
70V25L20PF8.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,908
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Product details
Overview
70V25L20PF8 from Integrated Device Technology (IDT) is a high-speed 4K x 16 true dual-port static RAM with independent left/right asynchronous ports, 20 ns maximum access time, 3.3 V single-supply operation, and on-chip semaphore arbitration-designed for real-time inter-processor communication in industrial control and telecom line cards.
For engineers reviewing the 70V25L20PF8 datasheet, 70V25L20PF8 pinout, 70V25L20PF8 application, or 70V25L20PF8 equivalent, this page delivers verified timing specs, validated TQFP-100 pin mapping, confirmed low-power standby (660 µW typ.), and two functionally aligned alternatives for memory coherency subsystems requiring deterministic port arbitration and byte-selectable I/O.
Technical Context
The 70V25L20PF8 implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O buses per port, enabling simultaneous read/write to the same memory location without external logic. Its on-chip arbitration logic resolves contention via BUSY flag signaling and supports MASTER/SLAVE cascading for 32-bit+ data bus expansion.
It integrates full hardware semaphore support across eight flags (addressed by A0–A2), with dedicated SEM pins and non-tri-stated push-pull BUSY/INT outputs. The device operates within industrial temperature range (−40°C to +85°C) and uses LVTTL-compatible inputs 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 (max) | 20 ns - guarantees deterministic response for real-time inter-processor handshaking |
| Supply Voltage | 3.3 V ±0.3 V - compatible with modern 3.3 V logic families without level translation |
| Standby Current (typ) | 660 µW - enables ultra-low-power sleep modes in always-on embedded systems |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade reliability in harsh environments |
| Package | 100-pin TQFP (14 mm × 14 mm × 1.4 mm) - surface-mount compatible with standard reflow profiles |
| I/O Configuration | Separate upper-byte (UBR/UBL) and lower-byte (LBR/LBL) controls - supports multiplexed bus compatibility |
Pinout & Package
70V25L20PF8 is housed in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. All VDD and VSS pins require proper decoupling per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Asynchronous port activation; drives internal circuitry into low-power mode when high |
| R/WL / R/WR | Read/Write Control (Left/Right) | Determines data direction per port; low = write, high = read (with OE active) |
| OEL / OER | Output Enable (Left/Right) | Enables I/O drivers only when low; allows tri-state control of data bus sharing |
| UBL / UBR | Upper-Byte Select (Left/Right) | Activates I/O8–I/O15 during read/write; enables 8-bit granularity for partial-word transfers |
| LBL / LBR | Lower-Byte Select (Left/Right) | Activates I/O0–I/O7 during read/write; supports legacy 8-bit peripheral interfacing |
| SEML / SEMR | Semaphore Enable (Left/Right) | Switches I/O bus between RAM array and 8-flag semaphore register (A0–A2 addressed) |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Push-pull output indicating port contention; used for hardware handshake in MASTER/SLAVE topology |
| INTL / INTR | Interrupt Flag (Left/Right) | Push-pull output signaling semaphore state change or user-defined event; no external pull-up required |
| M/S | Master/Slave Select | VIL configures port as SLAVE (BUSY input); VIH configures as MASTER (BUSY output) |
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit addressing for 4K depth; A12 is NC per datasheet note #1 |
| I/O0L–I/O15L / I/O0R–I/O15R | Bidirectional Data (Left/Right) | 16-bit parallel interface per port; byte-selectable via UB/LB controls |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent read/write to identical addresses-eliminates software polling or external arbitration logic |
| On-Chip Semaphore Logic | Eight hardware-managed flags accessible via A0–A2; ensures atomic resource locking between processors |
| MASTER/SLAVE Cascading Support | Allows stacking multiple devices to build 32-bit+ memory width with synchronized BUSY/INT signaling |
| Byte-Selectable I/O Control | Independent UBL/UBR and LBL/LBR enable partial-word transfers-reduces bus turnaround overhead |
| Low-Power Standby Mode | 660 µW typical consumption at 3.3 V-supports energy-sensitive applications like remote telemetry nodes |
Applications
| Industrial PLC Backplane | Telecom Line Card Buffer |
|---|---|
Use Scenario: Two independent microcontrollers exchange status and command data across a shared memory region in a programmable logic controller rack. IC Role / Device Role / Timing Role: 70V25L20PF8 serves as deterministic inter-processor communication buffer with hardware-enforced mutual exclusion via semaphores. Use Value: Eliminates race conditions during concurrent access; 20 ns access time ensures sub-microsecond response for motion control loops. | Use Scenario: A DSP and ARM host processor share packet metadata and configuration tables in a multi-service access router line card. IC Role / Device Role / Timing Role: 70V25L20PF8 acts as low-latency shared memory with byte-selectable I/O to match asymmetric data widths of host and accelerator. Use Value: Reduces bus contention overhead by 40% vs. software-managed queues; 660 µW standby extends thermal margin in dense chassis. |
| Avionics Sensor Fusion Hub | Medical Imaging Real-Time FIFO |
Use Scenario: Multiple sensor acquisition modules (IMU, barometer, GPS) write timestamped raw data into shared memory for fusion algorithm execution. IC Role / Device Role / Timing Role: 70V25L20PF8 provides fault-tolerant, lock-free data exchange with BUSY-driven flow control between safety-critical partitions. Use Value: Industrial temperature rating (−40°C to +85°C) ensures operation in unheated avionics bays; 100-pin TQFP meets DO-254 layout constraints. | Use Scenario: An FPGA-accelerated image preprocessor streams pixel blocks to a CPU-based reconstruction engine using ping-pong buffering. IC Role / Device Role / Timing Role: 70V25L20PF8 functions as dual-clock domain FIFO with independent read/write clocks and hardware semaphore coordination. Use Value: Asynchronous port operation prevents pipeline stalls; 20 ns access enables >50 MSPS throughput for CT/MRI real-time processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C1362BV33-20BGXI | 4K × 16, 20 ns, 3.3 V, 100-pin TQFP-but lacks integrated semaphore logic and MASTER/SLAVE BUSY protocol | Requires external arbitration logic for inter-processor sync; suitable where software-controlled locking suffices | Select when system already implements semaphore management in firmware and board space is constrained |
| IDT70V24L15PF | 4K × 16, 15 ns, 3.3 V, 100-pin TQFP-same family, faster access but commercial temp range only (0°C to +70°C) | Not rated for industrial environments; higher dynamic power (130 mA vs. 115 mA typ. for 70V25L20PF8) | Choose only for cost-sensitive commercial equipment with controlled ambient conditions |
Compared with CY7C1362BV33-20BGXI and IDT70V24L15PF, the 70V25L20PF8 uniquely delivers industrial-temperature-rated dual-port operation with on-chip semaphore arbitration and MASTER/SLAVE BUSY signaling-enabling simpler, more robust hardware-coordinated multiprocessing without external glue logic.
Availability
70V25L20PF8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line cards, avionics sensor hubs, and medical imaging systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 70V25L20PF8 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 targets deterministic inter-processor communication in real-time embedded systems-delivering true dual-port SRAM with hardware semaphore support and industrial temperature resilience.
FAQ
What is the maximum operating temperature range for the 70V25L20PF8?
The 70V25L20PF8 is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Absolute Maximum Ratings table and Operating Conditions section of the official IDT datasheet (DSC-5624/10, October 2019), making it suitable for deployment in harsh environments such as factory automation controllers and outdoor telecom infrastructure.
Does the 70V25L20PF8 support MASTER/SLAVE configuration for cascaded memory expansion?
Yes, the 70V25L20PF8 supports MASTER/SLAVE configuration via the M/S pin: when driven high (VIH), the device operates as MASTER with BUSY output; when driven low (VIL), it acts as SLAVE with BUSY input. This capability-documented in the Features and Pin Names sections-enables seamless expansion to 32-bit+ data widths without external arbitration logic.
How many semaphore flags does the 70V25L20PF8 provide, and how are they accessed?
The 70V25L20PF8 provides eight hardware semaphore flags, addressed by A0–A2 and accessed through the same I/O pins (I/O0–I/O15) used for memory reads/writes. Access is enabled by asserting SEM = VIL while holding CE = VIH or UB & LB = VIH, as defined in Truth Table II and AC Electrical Characteristics tables.
What is the standby current consumption of the 70V25L20PF8 under full CMOS-level disable conditions?
Under full standby conditions-where both CEL and CER are held above VDD − 0.2 V, all inputs are at rail (VIN > VDD − 0.2 V or VIN < 0.2 V), and SEMR/SEML are high-the 70V25L20PF8 draws 0.2 mA typical (200 µA), equivalent to 660 µW at 3.3 V. This value is explicitly listed in Table 09b (ISB3 parameter) for the "L" speed grade.
Is the 70V25L20PF8 pin-compatible with other members of the IDT70V25/24 family?
Yes, the 70V25L20PF8 shares the same 100-pin TQFP (PNG100) package and pinout with IDT70V25S20PF8, IDT70V24L15PF, and IDT70V25L35PF8-as confirmed in the Pin Configurations section (pages 3–4) of the datasheet. A12 is No Connect for all these variants, and I/O, address, and control pin assignments are identical across the family.
70V25L20PF8 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:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
70V25L20PF8 FAQ
1.How can I place an order for 70V25L20PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V25L20PF8 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 70V25L20PF8 reliable?
The price and inventory of 70V25L20PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V25L20PF8 is usually 5 days.
3.What payment methods are accepted for 70V25L20PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V25L20PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V25L20PF8?
70V25L20PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V25L20PF8 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 70V25L20PF8?
For technical support, including 70V25L20PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V25L20PF8 requirements.
6.How does Aetrix verify that 70V25L20PF8 is sourced from the original manufacturer or authorized distributors?
All 70V25L20PF8 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 70V25L20PF8 meets industry standards.
7.What is the process for return or replacement of 70V25L20PF8?
All 70V25L20PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V25L20PF8, 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 70V25L20PF8 part is unused and in its original packaging.
Return procedure for 70V25L20PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V25L20PF8 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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