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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas 70V06S25PFI

Name: 70V06S25PFI
Brand: Renesas
SKU: 70V06S25PFI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 70V06S25PFI

Manufacturer:: Renesas

Category:: Memory

Package:: 64-LQFP

Datasheet:: 70V06S25PFI.pdf

Description:: IC SRAM 128KBIT PARALLEL 64TQFP

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Product details

Overview

70V06S25PFI from IDT (Integrated Device Technology) is a high-speed, 3.3V, 16K × 8 true dual-port static RAM with independent left/right ports, 25 ns maximum read cycle time, industrial temperature range (−40°C to +85°C), and integrated semaphore and interrupt logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 70V06S25PFI datasheet, 70V06S25PFI pinout, 70V06S25PFI application, or 70V06S25PFI equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT/SEM signal semantics, package-specific pin mapping (68-pin PLCC), and validated alternatives for memory coherency designs.

Technical Context

The 70V06S25PFI implements fully asynchronous dual-port access with separate address, control, and I/O buses per port. It supports simultaneous reads of the same memory location and uses hardware-based port arbitration via push-pull BUSY outputs and dedicated M/S select to resolve contention without external logic.

Its on-chip semaphore logic enables eight shared flags accessed via A0–A2 and I/O0–I/O7, while interrupt signaling uses fixed mailbox addresses (3FFE_H for INTL, 3FFF_H for INTR). The device operates at 3.3 V ±0.3 V and retains data down to 2 V during battery backup.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	16K × 8 bits (128 Kbit total), two independent 16-bit addressable spaces
Access Time (tRC)	25 ns max - defines minimum cycle time for reliable read operations at full speed
Supply Voltage	3.3 V ±0.3 V - TTL-compatible single supply; supports 2 V data retention in battery-backup mode
Operating Temperature	−40°C to +85°C - qualified for industrial-grade embedded and communications equipment
Power Consumption	Active: 130 mA typ. (both ports active); Full standby: 0.2 mA typ. (CMOS-level inputs)
Arbitration Logic	Hardware BUSY flag with tAPS = 5 ns setup; push-pull output eliminates need for external pull-ups
Semaphore Support	Eight dedicated flags, addressed by A0–A2, writable via I/O0, readable via I/O0–I/O7

Pinout & Package

70V06S25PFI is packaged in a 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 24.1 mm × 24.1 mm × 4.3 mm, with all VDD pins requiring connection to 3.3 V and all VSS pins tied to ground.

Pin/Terminal	Circuit Role	Design Meaning
CEL / CER	Chip Enable (Left / Right)	Active-low enable per port; controls port power-down and memory access eligibility
R/WL / R/WR	Read/Write Control (Left / Right)	Active-low write enable; determines direction of data transfer on respective I/O bus
OEL / OER	Output Enable (Left / Right)	Active-low tri-state control for I/O drivers; allows bus sharing without contention
A0L–A13L / A0R–A13R	Address Inputs (Left / Right)	14-bit address buses enabling full 16K-word addressing per port
I/O0L–I/O7L / I/O0R–I/O7R	Data I/O (Left / Right)	Bidirectional 8-bit data paths; support simultaneous independent reads/writes
SEML / SEMR	Semaphore Enable (Left / Right)	Active-low select for semaphore register access instead of memory array
INTL / INTR	Interrupt Flag Output (Left / Right)	Open-drain compatible push-pull outputs indicating mailbox activity (3FFE_H/3FFF_H)
BUSYL / BUSYR	Busy Flag (Left / Right)	Push-pull outputs asserting when both ports access same address; used for hardware arbitration
M/S	Master/Slave Select	High = BUSY output (master); Low = BUSY input (slave); enables cascaded multi-port configurations
VDD / VSS	Power / Ground	Multiple distributed VDD/VSS pins ensure low-noise operation and stable decoupling

Key Features

Feature	Design Value
True dual-port architecture	Enables concurrent, asynchronous access to any memory location by two independent controllers without software overhead
Hardware semaphore & interrupt logic	Eliminates need for external arbitration logic or polling; reduces inter-processor latency to ≤20 ns (tINS/tINR)
Master/slave cascading capability	Supports 16-bit+ data bus expansion using M/S pin and BUSY chaining across multiple devices
Low-power standby modes	Full standby current as low as 0.2 mA enables energy-sensitive applications like battery-backed controllers
Industrial-grade reliability	Qualified over −40°C to +85°C with 100% production-tested AC timing and DC parametrics

Applications

Real-Time Industrial PLC	Dual-Core DSP Communication Buffer
Use Scenario: Two independent CPU cores share status, command, and sensor data in deterministic motion-control loops. IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared memory with hardware BUSY arbitration preventing race conditions on critical variables. Use Value: Eliminates software mutexes and reduces inter-core synchronization overhead to sub-25 ns, meeting hard real-time deadlines.	Use Scenario: A host ARM processor offloads signal processing tasks to a dedicated DSP, requiring high-bandwidth bidirectional data exchange. IC Role / Device Role / Timing Role: 70V06S25PFI provides parallel 8-bit I/O paths and semaphore-controlled resource locking for DMA-safe buffer management. Use Value: Enables sustained 40 MB/s throughput (1/25 ns cycle) with no wait states, outperforming serial interfaces like SPI or UART.
Avionics Data Concentrator	Redundant Network Switch Controller
Use Scenario: Safety-critical flight control system uses dual-redundant processors that must maintain synchronized state across ARINC-429 and MIL-STD-1553 buses. IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with interrupt-driven mailbox protocol for cross-processor health and command messaging. Use Value: Ensures deterministic message delivery (tINS ≤20 ns) and automatic recovery from transient faults via hardware semaphore release.	Use Scenario: Enterprise network switch employs redundant management CPUs to guarantee uptime during firmware updates or failover events. IC Role / Device Role / Timing Role: Provides atomic flag-based coordination between primary and backup controllers using eight independent semaphores. Use Value: Guarantees exclusive access to configuration registers and packet buffers, preventing corruption during hot-switchover.

Real-Time Industrial PLC

Dual-Core DSP Communication Buffer

Use Scenario: Two independent CPU cores share status, command, and sensor data in deterministic motion-control loops.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as zero-latency shared memory with hardware BUSY arbitration preventing race conditions on critical variables.

Use Value: Eliminates software mutexes and reduces inter-core synchronization overhead to sub-25 ns, meeting hard real-time deadlines.

Use Scenario: A host ARM processor offloads signal processing tasks to a dedicated DSP, requiring high-bandwidth bidirectional data exchange.

IC Role / Device Role / Timing Role: 70V06S25PFI provides parallel 8-bit I/O paths and semaphore-controlled resource locking for DMA-safe buffer management.

Use Value: Enables sustained 40 MB/s throughput (1/25 ns cycle) with no wait states, outperforming serial interfaces like SPI or UART.

Avionics Data Concentrator

Redundant Network Switch Controller

Use Scenario: Safety-critical flight control system uses dual-redundant processors that must maintain synchronized state across ARINC-429 and MIL-STD-1553 buses.

IC Role / Device Role / Timing Role: Acts as fault-tolerant shared memory with interrupt-driven mailbox protocol for cross-processor health and command messaging.

Use Value: Ensures deterministic message delivery (tINS ≤20 ns) and automatic recovery from transient faults via hardware semaphore release.

Use Scenario: Enterprise network switch employs redundant management CPUs to guarantee uptime during firmware updates or failover events.

IC Role / Device Role / Timing Role: Provides atomic flag-based coordination between primary and backup controllers using eight independent semaphores.

Use Value: Guarantees exclusive access to configuration registers and packet buffers, preventing corruption during hot-switchover.

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, 16K × 16 organization, 3.3 V, 100-pin TQFP; lacks integrated semaphore logic	Requires external logic for semaphore/INT functions; better suited for wide-bus systems needing 16-bit data path	Select when 16-bit word width is mandatory and external arbitration is acceptable
IS61WV102416BLL-10TLI	10 ns access, 64K × 16 organization, 3.3 V, 100-pin TQFP; no BUSY/INT/SEM hardware	No native port arbitration-relies on software protocols or external CPLD; higher density but less deterministic	Select for high-speed, high-density buffering where latency-critical arbitration is handled in firmware

Compared with CY7C024AV-25AXC and IS61WV102416BLL-10TLI, the 70V06S25PFI uniquely integrates hardware semaphore, interrupt, and BUSY arbitration in a compact 68-pin PLCC-reducing BOM count, PCB area, and design risk in safety- or latency-critical dual-processor systems.

Availability

70V06S25PFI is available at Aetrix Electronics and suitable for real-time industrial PLCs, avionics data concentrators, dual-core DSP communication buffers, and redundant network switch controllers requiring stable component supply across extended product lifecycles.

Supply support for 70V06S25PFI 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), now part of Renesas Electronics, is a fabless semiconductor company specializing in high-performance timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The 70V06S25PFI belongs to IDT's legacy dual-port SRAM family, engineered specifically for deterministic inter-processor communication in embedded systems demanding hardware-enforced memory coherency and sub-30 ns latency.

FAQ

What is the maximum operating frequency supported by the 70V06S25PFI?

The 70V06S25PFI does not specify a clock frequency-it is an asynchronous SRAM. Its performance is defined by timing parameters: maximum read cycle time (tRC) is 25 ns, corresponding to an effective 40 MHz maximum sustained access rate. Actual throughput depends on system-level address/control setup and hold times, not a clock signal.

Does the 70V06S25PFI support battery backup operation?

Yes, the 70V06S25PFI supports battery backup operation with data retention down to 2 V. When VDD drops below 2 V, the device maintains stored data without corruption, making it suitable for applications requiring non-volatile state preservation during main power loss.

How does the M/S pin affect BUSY signal behavior in the 70V06S25PFI?

When M/S = VIH, the 70V06S25PFI operates as a master: BUSYL and BUSYR are push-pull outputs indicating port contention. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs, and writes are inhibited when the corresponding BUSY input is asserted-enabling daisy-chained arbitration across multiple devices.

Can the 70V06S25PFI be used in a 16-bit data bus configuration?

Yes-the 70V06S25PFI supports 16-bit or wider data buses via master/slave cascading. Two devices can be configured with one as master (M/S = VIH) and the other as slave (M/S = VIL), using BUSY chaining and shared address/control lines to form a unified 16K × 16 memory space without external glue logic.

What are the valid interrupt mailbox addresses for the 70V06S25PFI?

The 70V06S25PFI uses fixed interrupt mailbox addresses: writing to address 3FFE_H sets the left-port interrupt flag (INTL), and writing to 3FFF_H sets the right-port flag (INTR). Reading those same addresses clears the respective flags-enabling simple, hardware-accelerated inter-processor signaling.

70V06S25PFI 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:: 128Kbit

Memory Organization:: 16K x 8

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:: 64-TQFP (14x14)

70V06S25PFI FAQ

1.How can I place an order for 70V06S25PFI through Aetrix?

Please submit a Request for Quotation (RFQ) for 70V06S25PFI 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 70V06S25PFI reliable?

The price and inventory of 70V06S25PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V06S25PFI is usually 5 days.

3.What payment methods are accepted for 70V06S25PFI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V06S25PFI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 70V06S25PFI?

70V06S25PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 70V06S25PFI 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 70V06S25PFI?

For technical support, including 70V06S25PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V06S25PFI requirements.

6.How does Aetrix verify that 70V06S25PFI is sourced from the original manufacturer or authorized distributors?

All 70V06S25PFI 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 70V06S25PFI meets industry standards.

7.What is the process for return or replacement of 70V06S25PFI?

All 70V06S25PFI units undergo pre-shipment inspection (PSI). If there is an issue with 70V06S25PFI, 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 70V06S25PFI part is unused and in its original packaging.

Return procedure for 70V06S25PFI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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