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Renesas 70V05S25PF
- Part No.:
- 70V05S25PF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
70V05S25PF.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,866
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Product details
Overview
70V05S25PF 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 full on-chip semaphore and interrupt logic for inter-processor communication in real-time embedded systems.
For engineers reviewing the 70V05S25PF datasheet, 70V05S25PF pinout, 70V05S25PF application, or 70V05S25PF equivalent, key selection considerations include simultaneous read capability, BUSY/INT flag timing, master/slave arbitration support, and 64-pin TQFP packaging for space-constrained industrial control and telecom backplane designs.
Technical Context
The 70V05S25PF implements fully asynchronous dual-port operation with separate address, data, and control buses per port-enabling concurrent read/write access to any memory location without external arbitration logic. Its on-chip port arbitration resolves contention via BUSY flag assertion or semaphore handshake.
It supports MASTER/SLAVE cascading using the M/S pin to expand data width beyond 8 bits, with dedicated BUSYL/BUSYR push-pull outputs (master) or inputs (slave), and includes interrupt generation triggered by write-to-specific-address events on either port.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 (64 Kbit), dual-port SRAM with independent left/right address/data/control interfaces |
| 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 5 V tolerance |
| Operating Temperature | 0°C to +70°C (Commercial) - validated for standard industrial ambient environments |
| Power Consumption | Active: 400 mW typ; Standby: 660 μW typ - enables low-power modes during idle cycles |
| Package | 64-pin TQFP (PNG64), 14 mm × 14 mm × 1.4 mm - surface-mount compatible with automated assembly |
| Interface Logic | TTL-compatible inputs/outputs - interoperable with 3.3 V LVTTL and mixed-voltage system interfaces |
Pinout & Package
70V05S25PF is housed in a 64-pin thin quad flatpack (TQFP) package, designated PNG64, with 0.5 mm lead pitch and exposed thermal pad. Pin assignments follow the standard IDT70V05 dual-port layout optimized for signal integrity and minimal crosstalk between ports.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A12L | Left port address inputs | 13-bit address bus for left-side memory access; supports full 8K addressing |
| A0R–A12R | Right port address inputs | 13-bit address bus for right-side memory access; fully independent of left port |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit data path; tri-state controlled by OEL and R/WL; shares pins for read/write |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit data path; tri-state controlled by OER and R/WR; electrically isolated from left port |
| CEL, CER | Chip enable (active low) | Independent port enables; deassertion places respective port in ultra-low-power standby |
| OEL, OER | Output enable (active low) | Controls output drivers only; does not affect internal memory state or power mode |
| R/WL, R/WR | Read/write direction control | Active-low signals determining data flow direction per port; synchronous with CE |
| SEML, SEMR | Semaphore enable (active low) | Enables access to 8 semaphore flags (addressed by A0–A2); used for inter-port synchronization |
| INTL, INTR | Interrupt output (open-drain) | Active-low flags indicating write to interrupt-set address on opposite port; requires external pull-up |
| BUSYL, BUSYR | Busy status (push-pull) | Indicates port contention; output when M/S = VIH (master), input when M/S = VIL (slave) |
| M/S | Master/Slave select | VIL configures device as slave (BUSY input); VIH configures as master (BUSY output) |
| VDD, VSS | Power and ground | Multiple VDD (pins 2, 16, 31, 47, 64) and VSS (pins 1, 15, 30, 46, 63) pins ensure stable supply distribution |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables simultaneous reads from same address on both ports-no arbitration delay or data corruption |
| On-chip semaphore logic | Eight hardware semaphore flags accessible via A0–A2; eliminates need for external locking circuitry |
| Hardware interrupt generation | Automatic INT assertion on write to preconfigured address-reduces software polling overhead |
| Master/Slave cascading support | Single M/S pin enables seamless 16-bit+ word expansion using multiple 70V05S25PF devices |
| Automatic power-down control | CE-driven standby mode reduces current to 660 μW-critical for battery-backed or energy-sensitive systems |
Applications
| Industrial PLC Communication Buffer | Telecom Line Card Data Exchange |
|---|---|
Use Scenario: Dual-CPU PLC architecture where one CPU handles I/O scanning and the other runs motion control algorithms, requiring shared memory with deterministic access. IC Role / Device Role / Timing Role: 70V05S25PF serves as the coherency bridge-left port connected to scan CPU, right port to motion CPU-with BUSY arbitration preventing race conditions. Use Value: 25 ns access ensures sub-50 ns inter-processor message latency, meeting hard real-time cycle budgets under worst-case contention. | Use Scenario: High-density telecom line card with separate control processor and DSP farm exchanging packet metadata and configuration tables. IC Role / Device Role / Timing Role: 70V05S25PF acts as a non-blocking data exchange buffer-semaphores coordinate buffer ownership, interrupts signal new packet arrival. Use Value: On-chip semaphore and interrupt logic eliminates 3–5 discrete logic ICs, reducing BOM cost and PCB area by >12 mm². |
| Avionics Sensor Fusion Hub | Medical Imaging Real-Time FIFO |
Use Scenario: Multi-sensor avionics unit fusing inertial, GPS, and barometric data streams into a unified navigation solution with strict DO-254 timing compliance. IC Role / Device Role / Timing Role: 70V05S25PF provides time-deterministic shared memory between sensor acquisition FPGA and safety-critical flight controller MCU. Use Value: Simultaneous read capability allows controller to fetch latest fused data while FPGA writes next sample-zero-cycle interlock overhead. | Use Scenario: Digital X-ray detector requiring lossless buffering of high-speed pixel data before compression and transfer to host PC. IC Role / Device Role / Timing Role: 70V05S25PF operates as a ping-pong FIFO-FPGA writes to one port while host DMA reads from the other, synchronized via BUSY flags. Use Value: 64 Kbit capacity at 25 ns access sustains 40 MB/s sustained throughput, matching 12-bit @ 3.3 MHz pixel clock rates. |
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, 100-pin TQFP; higher density but wider bus and larger footprint | Requires board redesign for 16-bit data path; unsuitable for space-constrained 8-bit systems | Select only when 16-bit word width and ≥128 Kbit capacity are mandatory |
| IS61LV5128-25KLI | 25 ns, 64K × 8 single-port SRAM; no dual-port, semaphore, or BUSY logic | Lacks hardware arbitration-requires external logic or software protocols for multi-CPU sharing | Use only in cost-sensitive, non-real-time applications where deterministic latency is not required |
Compared with CY7C024AV-25AXC and IS61LV5128-25KLI, the 70V05S25PF uniquely delivers true dual-port operation with integrated arbitration in a compact 64-pin TQFP-enabling direct CPU-to-CPU communication without glue logic or bus width conversion.
Availability
70V05S25PF is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, avionics sensor hubs, and medical imaging subsystems requiring stable component supply, long-term lifecycle support, and guaranteed commercial-grade performance.
Supply support for 70V05S25PF 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions before its acquisition by Renesas in 2019.
The 70V05S25PF belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where latency, reliability, and hardware arbitration are critical.
FAQ
What is the maximum operating temperature range for the 70V05S25PF?
The 70V05S25PF is rated for commercial temperature operation from 0°C to +70°C. It is not qualified for industrial (-40°C to +85°C) or extended temperature ranges; for those requirements, the 70V05L variant (e.g., 70V05L25PF) must be selected instead. This distinction is clearly specified in IDT's ordering information and datasheet revision history.
Does the 70V05S25PF support true simultaneous read operations from both ports to the same memory address?
Yes, the 70V05S25PF features true dual-ported memory cells that allow simultaneous reads of the same memory location on both left and right ports without contention, arbitration delay, or data corruption. This capability is explicitly confirmed in the "Features" section and functional description of the 70V05S25PF datasheet.
How does the BUSY arbitration mechanism work on the 70V05S25PF?
The 70V05S25PF uses BUSY arbitration to resolve port contention during simultaneous writes to the same address. When configured as master (M/S = VIH), BUSYL and BUSYR are outputs that assert low to indicate busy state. The arbitration timing depends on address setup (tAPS) and is detailed in Figures 14–15 of the 70V05S25PF datasheet.
Can the 70V05S25PF be used in a 16-bit data bus configuration?
Yes, the 70V05S25PF supports 16-bit expansion via MASTER/SLAVE cascading. Two devices can be connected with M/S = VIH (master) and M/S = VIL (slave); the master's BUSY output controls the slave's BUSY input, enabling full-speed, error-free 16-bit operation without external logic-per IDT Application Note DSC 2941.
What is the function of the SEM pins on the 70V05S25PF?
The SEML and SEMR pins on the 70V05S25PF enable hardware semaphore access. When asserted (low), they allow the respective port to read/write eight dedicated semaphore flags addressed by A0–A2. This provides atomic lock/unlock capability for inter-processor synchronization without software intervention or additional components.
70V05S25PF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- 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)
70V05S25PF FAQ
1.How can I place an order for 70V05S25PF through Aetrix?
Please submit a Request for Quotation (RFQ) for 70V05S25PF 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 70V05S25PF reliable?
The price and inventory of 70V05S25PF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V05S25PF is usually 5 days.
3.What payment methods are accepted for 70V05S25PF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V05S25PF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 70V05S25PF?
70V05S25PF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 70V05S25PF 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 70V05S25PF?
For technical support, including 70V05S25PF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V05S25PF requirements.
6.How does Aetrix verify that 70V05S25PF is sourced from the original manufacturer or authorized distributors?
All 70V05S25PF 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 70V05S25PF meets industry standards.
7.What is the process for return or replacement of 70V05S25PF?
All 70V05S25PF units undergo pre-shipment inspection (PSI). If there is an issue with 70V05S25PF, 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 70V05S25PF part is unused and in its original packaging.
Return procedure for 70V05S25PF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
70V05S25PF Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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