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

Renesas 70V06S35PF8

Name: 70V06S35PF8
Brand: Renesas
SKU: 70V06S35PF8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 70V06S35PF8

Manufacturer:: Renesas

Category:: Memory

Package:: 64-LQFP

Datasheet:: 70V06S35PF8.pdf

Description:: IC SRAM 128KBIT PARALLEL 64TQFP

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Product details

Overview

70V06S35PF8 from IDT (Integrated Device Technology) is a high-speed 3.3V 16K × 8 dual-port static RAM with true independent left/right ports, 35 ns read cycle time, TTL-compatible I/O, and integrated semaphore/arbiter logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 70V06S35PF8 datasheet, 70V06S35PF8 pinout, 70V06S35PF8 application, or 70V06S35PF8 equivalent, this device supports simultaneous asynchronous access, hardware BUSY arbitration, interrupt flag signaling, and battery-backed data retention down to 2V - critical for deterministic multi-CPU memory sharing.

Technical Context

The 70V06S35PF8 implements fully asynchronous dual-port architecture with separate address, control, and bidirectional I/O buses per port. It features on-chip port arbitration logic that asserts BUSY flags when both ports attempt concurrent access to the same memory location, with priority determined by tAPS setup timing.

It supports MASTER/SLAVE cascading via M/S pin to expand data width beyond 8 bits, includes dedicated semaphore registers (A0–A2 addressed, 8 flags), and provides interrupt generation via fixed mailbox addresses (3FFE_H and 3FFF_H) with push-pull INTL/INTR outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	16K × 8 (128 Kbit), two independent 16-bit address spaces (A0–A13)
Access Time (tAA)	35 ns max - guarantees deterministic read latency for real-time CPU coherency
Read Cycle Time (tRC)	35 ns max - enables 28.6 MHz sustained random read throughput per port
Supply Voltage	3.3 V ± 0.3 V - compatible with modern low-voltage logic families without level shifters
Operating Temperature	0°C to +70°C (Commercial grade) - validated for office and lab environments
Standby Current (ISB3)	0.2 mA typ. - ultra-low power retention mode with CMOS-level inputs disabled
Data Retention	2 V minimum - maintains memory contents during brown-out or backup battery operation

Pinout & Package

70V06S35PF8 is packaged in a 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant and green-part qualified.

Pin/Terminal	Circuit Role	Design Meaning
CEL / CER	Chip Enable (Left / Right)	Active-low enable per port; controls port power-down and memory access gating
R/WL / R/WR	Read/Write Control (Left / Right)	Active-low write strobe; determines direction of I/O bus data flow per port
OEL / OER	Output Enable (Left / Right)	Active-low tri-state control for I/O drivers; isolates bus during inactive cycles
A0L–A13L / A0R–A13R	Address Inputs (Left / Right)	14-bit address bus per port; selects one of 16,384 memory locations independently
I/O0L–I/O7L / I/O0R–I/O7R	Bidirectional Data Bus (Left / Right)	8-bit parallel data path per port; supports simultaneous read/write to same or different addresses
SEML / SEMR	Semaphore Enable (Left / Right)	Active-low enable for accessing 8 semaphore flags (A0–A2); used for inter-port synchronization
INTL / INTR	Interrupt Flag Output (Left / Right)	Push-pull active-high output; signals mailbox write event (3FFE_H/3FFF_H) to opposite port
BUSYL / BUSYR	Busy Flag (Left / Right)	Push-pull output (MASTER) or input (SLAVE); indicates address contention or blocks writes during conflict
M/S	Master/Slave Select	High = BUSY outputs asserted; Low = BUSY inputs accepted - enables daisy-chained arbitration
VDD / VSS	Power / Ground	3.3 V supply (6× VDD pins) and ground (8× VSS pins) - distributed for low-noise operation

Key Features

Feature	Design Value
True Dual-Port Architecture	Enables simultaneous, independent read/write operations from left and right ports without internal arbitration delay
Hardware Semaphore Logic	Eight dedicated flags (A0–A2) with atomic read/write support - eliminates software spinlocks in RTOS environments
On-Chip Arbitration	Automatic BUSY assertion on address match - prevents data corruption during concurrent access without external logic
Interrupt Mailbox Function	Dedicated 3FFE_H/3FFF_H addresses trigger INTL/INTR flags - enables zero-latency inter-processor messaging
Low-Power Standby Mode	ISB3 = 0.2 mA typical with CMOS-level inputs - extends battery life in portable or backup-power systems

Applications

Industrial PLC Controller	Medical Imaging Subsystem
Use Scenario: Two independent CPUs (control + motion) share configuration and status data in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with hardware arbitration preventing race conditions during concurrent register updates. Use Value: Eliminates need for external arbitration logic and reduces system latency by 120 ns vs. software-managed semaphores.	Use Scenario: Image acquisition processor writes raw frames while display processor reads processed buffers. IC Role / Device Role / Timing Role: 70V06S35PF8 serves as ping-pong frame buffer with BUSY-driven handshaking to prevent overwrites. Use Value: Sustains 28.6 MHz burst reads/writes per port - meets 1080p@60fps real-time pipeline requirements.
Avionics Data Concentrator	Test Equipment Pattern Generator
Use Scenario: ARINC 429 interface processor and flight management unit exchange telemetry and command packets. IC Role / Device Role / Timing Role: Dual-port RAM implements mailbox-based IPC with interrupt-triggered packet arrival notification. Use Value: INTL/INTR flags reduce CPU polling overhead by >95%, freeing cycles for safety-critical tasks.	Use Scenario: FPGA-based pattern generator stores stimulus vectors while microcontroller updates test sequences. IC Role / Device Role / Timing Role: 70V06S35PF8 provides deterministic, non-blocking memory access for high-speed vector streaming. Use Value: 35 ns tAA ensures sub-40 ns address-to-data timing - critical for <100 ns pattern edge resolution.

Industrial PLC Controller

Medical Imaging Subsystem

Use Scenario: Two independent CPUs (control + motion) share configuration and status data in real time.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory buffer with hardware arbitration preventing race conditions during concurrent register updates.

Use Value: Eliminates need for external arbitration logic and reduces system latency by 120 ns vs. software-managed semaphores.

Use Scenario: Image acquisition processor writes raw frames while display processor reads processed buffers.

IC Role / Device Role / Timing Role: 70V06S35PF8 serves as ping-pong frame buffer with BUSY-driven handshaking to prevent overwrites.

Use Value: Sustains 28.6 MHz burst reads/writes per port - meets 1080p@60fps real-time pipeline requirements.

Avionics Data Concentrator

Test Equipment Pattern Generator

Use Scenario: ARINC 429 interface processor and flight management unit exchange telemetry and command packets.

IC Role / Device Role / Timing Role: Dual-port RAM implements mailbox-based IPC with interrupt-triggered packet arrival notification.

Use Value: INTL/INTR flags reduce CPU polling overhead by >95%, freeing cycles for safety-critical tasks.

Use Scenario: FPGA-based pattern generator stores stimulus vectors while microcontroller updates test sequences.

IC Role / Device Role / Timing Role: 70V06S35PF8 provides deterministic, non-blocking memory access for high-speed vector streaming.

Use Value: 35 ns tAA ensures sub-40 ns address-to-data timing - critical for <100 ns pattern edge resolution.

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-35AXC	3.3 V, 16K × 16, 35 ns, 100-pin TQFP - wider data bus but larger footprint and higher power (ISB = 10 mA)	Requires PCB redesign for 16-bit interface; better suited for systems needing word-wide access	Select when 16-bit data path is mandatory and board area permits larger package
AS7C316000B-35TIN	3.3 V, 16K × 8, 35 ns, 64-pin TQFP - no built-in semaphore or BUSY logic; requires external arbitration	Lacks hardware inter-processor coordination features; increases firmware complexity and risk of deadlock	Select only if cost is primary constraint and software-only synchronization is acceptable

Compared with CY7C024AV-35AXC and AS7C316000B-35TIN, the 70V06S35PF8 uniquely integrates arbitration, semaphore, and interrupt logic in a compact 64-pin TQFP - reducing BOM count, layout area, and firmware development effort for tightly coupled dual-CPU systems.

Availability

70V06S35PF8 is available at Aetrix Electronics and suitable for industrial PLC controllers, medical imaging subsystems, avionics data concentrators, and test equipment pattern generators requiring stable component supply, long-term lifecycle support, and guaranteed commercial-grade performance.

Supply support for 70V06S35PF8 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 memory, timing, and interface solutions for communications, computing, and industrial markets.

The IDT70V06 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware-coordinated memory sharing over software-managed protocols.

FAQ

What is the maximum operating frequency supported by the 70V06S35PF8?

The 70V06S35PF8 supports a maximum read cycle time (tRC) of 35 ns, enabling sustained operation at up to 28.6 MHz per port. This is not a clocked device - its asynchronous interface allows variable-rate access, but the 35 ns timing guarantee ensures deterministic worst-case latency for real-time scheduling. The 70V06S35PF8 does not require an external clock signal.

Does the 70V06S35PF8 support battery backup operation?

Yes, the 70V06S35PF8 supports battery backup operation with data retention down to 2 V. When VDD drops below 2.0 V, the device enters data retention mode - maintaining stored contents without refresh. This feature is explicitly specified in the datasheet and validated across temperature, making the 70V06S35PF8 suitable for systems requiring nonvolatile memory hold during power loss.

How does the BUSY arbitration logic work in the 70V06S35PF8?

The 70V06S35PF8 asserts BUSYL or BUSYR when both ports access the same memory address simultaneously. With M/S = VIH (MASTER), BUSY outputs indicate contention and block writes on the delayed port. With M/S = VIL (SLAVE), BUSY inputs accept arbitration signals from a master device. The tAPS setup time (5 ns min) ensures deterministic priority resolution - a key design element confirmed in the functional description and timing tables of the 70V06S35PF8 datasheet.

Can the 70V06S35PF8 be used in a 16-bit data bus configuration?

Yes, the 70V06S35PF8 supports 16-bit expansion using MASTER/SLAVE cascading. Two devices can be connected with M/S pins configured as master and slave, sharing address and control lines while interleaving I/O0–I/O7 to form a 16-bit data path. This capability is explicitly documented in the datasheet's "Features" and "Description" sections and validated in the functional block diagram - no external glue logic is required for this configuration.

What are the valid interrupt mailbox addresses for the 70V06S35PF8?

The 70V06S35PF8 uses fixed interrupt mailbox addresses: writing to address 3FFE_H sets the left port's INTL flag, and writing to 3FFF_H sets the right port's INTR flag. Reading those same addresses clears the respective flags. This behavior is defined in Truth Table III and confirmed in the Functional Description section - it is a hardwired feature of the 70V06S35PF8, not configurable via registers or straps.

70V06S35PF8 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:: 128Kbit

Memory Organization:: 16K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 35ns

Access Time:: 35 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)

70V06S35PF8 FAQ

1.How can I place an order for 70V06S35PF8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 70V06S35PF8 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 70V06S35PF8 reliable?

The price and inventory of 70V06S35PF8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V06S35PF8 is usually 5 days.

3.What payment methods are accepted for 70V06S35PF8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V06S35PF8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 70V06S35PF8?

70V06S35PF8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 70V06S35PF8 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 70V06S35PF8?

For technical support, including 70V06S35PF8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V06S35PF8 requirements.

6.How does Aetrix verify that 70V06S35PF8 is sourced from the original manufacturer or authorized distributors?

All 70V06S35PF8 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 70V06S35PF8 meets industry standards.

7.What is the process for return or replacement of 70V06S35PF8?

All 70V06S35PF8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V06S35PF8, 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 70V06S35PF8 part is unused and in its original packaging.

Return procedure for 70V06S35PF8:

1.Submit a request within 90 days.

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

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