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Renesas 70V05S25PF8
- Part No.:
- 70V05S25PF8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05S25PF8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,235
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Product details
Overview
70V05S25PF8 from IDT is a high-speed 3.3V 8K × 8 dual-port static RAM with true independent left/right ports, 25 ns maximum access time (commercial grade), TTL-compatible I/O, and on-chip semaphore and interrupt logic - used in real-time embedded systems requiring concurrent read/write access to shared memory, such as industrial motion controllers and telecom line cards.
For engineers reviewing the 70V05S25PF8 datasheet, 70V05S25PF8 pinout, 70V05S25PF8 application, or 70V05S25PF8 equivalent, key selection criteria include dual-port arbitration timing (tAPS, tBDD), BUSY flag behavior under M/S configuration, standby current (≤1.5 µA), and TQFP-64 package compatibility with high-density PCB layouts.
Technical Context
The 70V05S25PF8 implements fully asynchronous dual-port operation with separate address, control, and data buses per port, enabling simultaneous reads or writes to any memory location without external logic. Its on-chip arbitration logic resolves contention via BUSY signaling and supports MASTER/SLAVE cascading for 16-bit+ data bus expansion.
It integrates full hardware semaphore support (8 flags, addressed by A0–A2), interrupt generation (INTL/INTR), and automatic power-down via CE-controlled standby mode. All I/Os are 3.3V ±0.3V tolerant with push-pull outputs and TTL-level thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 (64 Kbit), two independent 13-bit address spaces (A0–A12 per port) |
| Access Time (tAA) | 25 ns max - guarantees deterministic read latency for real-time control loops |
| Supply Voltage | 3.3 V ±0.3 V - compatible with modern low-voltage digital systems; no level-shifting required |
| Standby Current (ISB) | 1.5 µA typ. - enables ultra-low-power sleep modes in battery-backed or energy-sensitive applications |
| Operating Temperature | 0°C to +70°C (Commercial) - validated for office, lab, and non-extended industrial environments |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm - surface-mount compatible with automated assembly |
| Arbitration Timing (tAPS) | 5 ns min - ensures deterministic BUSY assertion when address match occurs across ports |
Pinout & Package
64-pin thin quad flatpack (TQFP), package code PNG64, body size 14 mm × 14 mm × 1.4 mm. All VDD pins require local 3.3 V decoupling; all VSS pins must be connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access; latched on CE/R/W edge |
| A0R–A12R | Right port address inputs | Independent 13-bit address bus for right-side access; no timing dependency on left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit TTL-compatible data path; tri-stated when OEL = VIH or CEL = VIH |
| I/O0R–I/O7R | Right port bidirectional data | Electrically isolated from left port; supports concurrent read/write to same location |
| CEL / CER | Chip enable (left/right) | Active-low enables respective port; controls active/standby current state per port |
| OEL / OER | Output enable (left/right) | Active-low enables data output drivers; does not affect internal memory operation |
| R/WL / R/WR | Read/write control (left/right) | Low = write, High = read; determines direction of data flow on I/O bus |
| SEML / SEMR | Semaphore enable (left/right) | VIH selects RAM mode; VIL selects semaphore register access (A0–A2 address flags) |
| INTL / INTR | Interrupt flag output (left/right) | Open-drain capable (per datasheet note); signals semaphore/interrupt event to host controller |
| BUSYL / BUSYR | Busy flag (input/output) | Configurable via M/S: Master outputs BUSY; Slave inputs BUSY to inhibit conflicting writes |
| M/S | Master/Slave select | VIH = Master (BUSY output); VIL = Slave (BUSY input); enables cascaded multi-device configurations |
| VDD / VSS | Power / Ground | Four VDD and six VSS pins distributed for low-noise, low-impedance supply routing |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous, independent read/write to identical addresses - eliminates software locks or polling overhead |
| Hardware semaphore logic | Eight dedicated flags (A0–A2 addressable) with atomic set/clear - prevents race conditions in multi-CPU systems |
| On-chip arbitration with BUSY | Automatic port conflict resolution via programmable BUSY assertion (tAPS/tBDD timing controlled) - no external glue logic needed |
| Master/Slave cascading | Supports 16-bit+ word widths using M/S pin; eliminates external address multiplexing or bus transceivers |
| Interrupt generation | Dedicated INTL/INTR outputs signal semaphore events or write completions - reduces CPU polling load |
| Low-power standby mode | 1.5 µA typical ISB with CE = VIH - extends battery life in portable or always-on monitoring devices |
Applications
| Industrial Motion Controller | Telecom Line Card Buffer |
|---|---|
|
Use Scenario: Dual-CPU architecture where DSP handles servo loop computation while MCU manages I/O and comms. IC Role / Device Role / Timing Role: Shared memory buffer with real-time arbitration; left port for DSP, right port for MCU. Use Value: Eliminates inter-processor handshake delays; 25 ns access ensures sub-µs memory coherency for 20 kHz control cycles. |
Use Scenario: Packet buffering between framer ASIC and network processor in T1/E1 line interface. IC Role / Device Role / Timing Role: Asynchronous FIFO replacement; one port interfaces framer, other connects to NP DMA engine. Use Value: Concurrent read/write avoids pipeline stalls; BUSY flag prevents overrun during burst traffic peaks. |
| Medical Imaging Subsystem | Avionics Data Recorder |
|
Use Scenario: Real-time image acquisition (FPGA) and post-processing (ARM) sharing frame buffers. IC Role / Device Role / Timing Role: Dual-port SRAM acting as ping-pong frame store; FPGA writes frame N, ARM reads frame N−1. Use Value: Hardware semaphore coordination ensures frame boundary integrity; no software mutex latency. |
Use Scenario: Redundant flight data recording with dual independent processors writing to common log memory. IC Role / Device Role / Timing Role: Fault-tolerant shared memory with arbitration; each processor uses separate port and BUSY monitoring. Use Value: Prevents data corruption during processor failover; tBDD timing guarantees write completion before read access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C024AV-25AXC | 25 ns access, 8K × 16 organization, 3.3 V core but 5 V tolerant I/O; requires external bus transceivers for 8-bit systems | Targeted at wider data paths; less suitable for direct 8-bit microcontroller interfacing without level translation | Select when system requires 16-bit data width or mixed-voltage I/O; verify layout for higher pin count (100-pin TQFP) |
| IDT70V25L25PF8 | Same 8K × 8 organization and pinout, but industrial temp range (−40°C to +85°C) and 380 mW active power (vs. 400 mW typ. for 70V05S25PF8) | Designed for extended temperature deployment; higher standby current (660 µW vs. 1.5 µA) limits battery use | Choose for harsh environments; confirm thermal design if operating near 85°C ambient |
Compared with CY7C024AV-25AXC and IDT70V25L25PF8, the 70V05S25PF8 delivers optimal balance of commercial-grade speed, ultra-low standby power, and native 8-bit simplicity - making it preferred for cost-sensitive, space-constrained, and power-aware embedded designs.
Availability
70V05S25PF8 is available at Aetrix Electronics and suitable for industrial motion controllers, telecom line cards, and medical imaging subsystems requiring stable component supply and long-term production continuity.
Supply support for 70V05S25PF8 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 70V05S25PF8 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, lock-free inter-processor communication in real-time embedded systems with strict timing budgets.
FAQ
What is the maximum access time specification for the 70V05S25PF8?
The 70V05S25PF8 has a maximum access time (tAA) of 25 ns under commercial temperature conditions (0°C to +70°C) and VDD = 3.3 V ±0.3 V. This value is production-tested and guaranteed across the full operating voltage and temperature range specified for this variant, ensuring deterministic read latency in time-critical applications.
Does the 70V05S25PF8 support true simultaneous read operations on both ports to the same memory address?
Yes, the 70V05S25PF8 features true dual-ported memory cells that allow simultaneous reads from both ports to the same address location without contention or delay. This capability is inherent to its silicon architecture and requires no external arbitration - verified in Truth Table I and functional block diagram.
How is the BUSY signal configured and used on the 70V05S25PF8?
The BUSY signal on the 70V05S25PF8 is configured via the M/S pin: when M/S = VIH, BUSYL/BUSYR are outputs indicating port contention; when M/S = VIL, they become inputs that inhibit writes on the slave port. The 70V05S25PF8 implements push-pull BUSY outputs - not open-drain - as confirmed in Pin Configuration notes.
What is the standby current consumption of the 70V05S25PF8, and how is it achieved?
The 70V05S25PF8 draws 1.5 µA typical standby current (ISB) when CE = VIH on both ports. This ultra-low power state is achieved through internal circuitry that disables all port logic and memory array biasing while retaining data - validated in DC Electrical Characteristics Table on page 6 of the datasheet.
Can the 70V05S25PF8 be used in MASTER/SLAVE cascaded configurations, and what is required?
Yes, the 70V05S25PF8 supports MASTER/SLAVE cascading using the M/S pin and BUSY signaling. One device is configured as MASTER (M/S = VIH) to drive BUSY outputs; others as SLAVE (M/S = VIL) to accept BUSY as input. This enables seamless 16-bit+ word expansion without external logic, as detailed in the Features section and Functional Block Diagram.
70V05S25PF8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
70V05S25PF8 FAQ
1.How can I place an order for 70V05S25PF8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05S25PF8 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 70V05S25PF8 reliable?
The price and inventory of 70V05S25PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05S25PF8 is usually 5 days.
3.What payment methods are accepted for 70V05S25PF8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05S25PF8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05S25PF8?
70V05S25PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05S25PF8 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 70V05S25PF8?
For technical support, including 70V05S25PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05S25PF8 requirements.
6.How does Aetrix verify that 70V05S25PF8 is sourced from the original manufacturer or authorized distributors?
All 70V05S25PF8 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 70V05S25PF8 meets industry standards.
7.What is the process for return or replacement of 70V05S25PF8?
All 70V05S25PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V05S25PF8, 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 70V05S25PF8 part is unused and in its original packaging.
Return procedure for 70V05S25PF8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V05S25PF8 Tags
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AT24C02C-XHM-T
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