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

Renesas 71V30L25TFG

Name: 71V30L25TFG
Brand: Renesas
SKU: 71V30L25TFG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 71V30L25TFG

Manufacturer:: Renesas

Category:: Memory

Package:: 64-LQFP

Datasheet:: 71V30L25TFG.pdf

Description:: IC SRAM 8KBIT PARALLEL 64TQFP

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Product details

Overview

71V30L25TFG from Renesas Electronics (formerly IDT) is a high-speed, low-power 1K × 8 dual-port static RAM with independent left/right ports, on-chip arbitration logic, interrupt flags, and 25 ns max read cycle time. It operates from a single 3.3 V ±0.3 V supply, supports industrial temperature range (−40°C to +85°C), and features battery backup data retention down to 2 V for the L-version.

For engineers reviewing the 71V30L25TFG datasheet, 71V30L25TFG pinout, 71V30L25TFG application, or 71V30L25TFG equivalent, this device serves as a critical memory buffer in real-time inter-processor communication, FPGA co-processing, and legacy bus bridging where asynchronous dual-access, hardware arbitration, and deterministic interrupt signaling are required.

Technical Context

The 71V30L25TFG implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-enabling concurrent read/write access without clock synchronization. Its on-chip arbitration logic resolves contention via BUSY outputs (non-tristatable push-pull) that stall conflicting writes when both ports access the same address.

Interrupt functionality uses dedicated mailbox addresses (0x3FE for INTL, 0x3FF for INTR) to signal cross-port events; interrupt flags are set by write and cleared by read of those locations. The L-version guarantees 2 V data retention with ≤1000 µA standby current at 2 V, enabling true battery-backed operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1K × 8 bits (1024 words × 8-bit wide), providing compact, deterministic latency buffer space for embedded inter-processor messaging.
Access Time (tAA)	25 ns max (commercial grade), enabling direct interface with 40 MHz microcontrollers or FPGAs without wait states.
Supply Voltage	3.3 V ±0.3 V - TTL-compatible single supply eliminates level-shifting requirements in 3.3 V systems.
Standby Current (ISB3)	0.2 mA typical (full standby, CMOS inputs), supporting ultra-low-power hold mode during system sleep.
Data Retention	2 V minimum VCC, with ≤1000 µA retention current - enables reliable backup using coin-cell batteries or supercapacitors.
Operating Temperature	−40°C to +85°C (industrial grade), qualified for deployment in automotive engine control modules and industrial PLCs.
Package	64-pin STQFP (PPG64), 10 mm × 10 mm × 1.4 mm body - surface-mount compatible with standard reflow profiles and automated assembly.

Pinout & Package

71V30L25TFG is housed in a 64-pin STQFP (PPG64) package with exposed thermal pad. Pin functions are symmetrically organized for left (L) and right (R) ports, including dedicated BUSY and INT signals per port.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A9L / A0R–A9R	Address Inputs (Left/Right)	10-bit address buses enabling full 1K-word addressing per port; fully independent and asynchronous.
I/O0L–I/O7L / I/O0R–I/O7R	Bi-directional Data I/O (Left/Right)	8-bit parallel data paths; high-impedance when OE = VIH or CE = VIH, preventing bus contention.
CEL / CER	Chip Enable (Left/Right)	Active-low enables respective port; drives internal power-down circuitry when deasserted (VIH), reducing ISB to ≤0.2 mA.
OEL / OER	Output Enable (Left/Right)	Active-low controls output drivers; allows read data to appear on I/O pins only when asserted with CE.
R/WL / R/WR	Read/Write Control (Left/Right)	Active-low selects write mode; high enables read; must be stable during address transitions to avoid bus glitches.
BUSYL / BUSYR	Busy Output (Left/Right)	Non-tristatable push-pull outputs indicating port-level arbitration conflict; asserts LOW when opposite port accesses same address.
INTL / INTR	Interrupt Flag (Left/Right)	Push-pull outputs asserting HIGH when opposite port writes to mailbox address (0x3FE or 0x3FF); cleared by local read of same address.
VCC / GND	Power Supply Pins	Four VCC and four GND pins distributed across package corners - ensure low-noise, low-impedance power delivery and minimize ground bounce.

Key Features

Feature	Design Value
Dual-port arbitration logic	Hardware-resolved contention via BUSY outputs eliminates software polling and guarantees deterministic access ordering.
Port-to-port interrupt signaling	Dedicated mailbox addresses (0x3FE/0x3FF) enable zero-latency event notification between processors or peripherals without shared registers.
Battery backup data retention	Operates down to 2 V with ≤1000 µA retention current - supports >1-year backup with CR2032 cells in always-on monitoring applications.
Low-power standby modes	Full standby (ISB3 = 0.2 mA typ.) and partial standby (ISB2 = 30 mA typ.) allow granular power management per active port.
TTL-compatible 3.3 V interface	VIH = 2.0 V min., VIL = 0.8 V max. - interoperable with legacy 3.3 V logic families without level shifters or external biasing.

Applications

Real-Time Inter-Processor Communication	FPGA-CPU Co-Processing Buffer
Use Scenario: Two microcontrollers exchange status and command data in hard real-time control loops (e.g., motor drive safety monitor + main controller). IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared mailbox with hardware arbitration - eliminating race conditions and software locks. Use Value: Deterministic 25 ns access and BUSY-driven stalling ensure atomic message reads/writes without CPU overhead or timing jitter.	Use Scenario: An FPGA processes sensor streams while an ARM Cortex-M7 executes control algorithms; both require low-latency access to shared configuration and result buffers. IC Role / Device Role / Timing Role: 71V30L25TFG provides asynchronous, non-blocking memory space - FPGA writes processed frames, CPU reads results, no clock domain crossing logic needed. Use Value: Independent 10-bit address buses and separate CE/OE/RW per port eliminate arbitration firmware and reduce FPGA resource usage by >15%.
Legacy Bus Bridging (e.g., ISA ↔ PCI)	Industrial PLC I/O Data Exchange
Use Scenario: Translating between legacy 8-bit ISA peripherals and modern PCI-based host controllers in test equipment or medical devices. IC Role / Device Role / Timing Role: Acts as protocol-agnostic FIFO/buffer - ISA side writes, PCI side reads, with BUSY signaling backpressure to ISA bus master. Use Value: 25 ns tAA and 3.3 V compatibility simplify interface design; no glue logic required for timing alignment between mismatched bus speeds.	Use Scenario: Modular PLC backplane where I/O modules and CPU module exchange cyclic process data over a deterministic shared memory region. IC Role / Device Role / Timing Role: Provides fault-tolerant, lock-free data exchange zone with interrupt-driven change notification (INTL/INTR) to minimize scan cycle overhead. Use Value: Industrial −40°C to +85°C rating and 2 V data retention ensure continuous operation during brownouts or hot-swap events.

Real-Time Inter-Processor Communication

FPGA-CPU Co-Processing Buffer

Use Scenario: Two microcontrollers exchange status and command data in hard real-time control loops (e.g., motor drive safety monitor + main controller).

IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared mailbox with hardware arbitration - eliminating race conditions and software locks.

Use Value: Deterministic 25 ns access and BUSY-driven stalling ensure atomic message reads/writes without CPU overhead or timing jitter.

Use Scenario: An FPGA processes sensor streams while an ARM Cortex-M7 executes control algorithms; both require low-latency access to shared configuration and result buffers.

IC Role / Device Role / Timing Role: 71V30L25TFG provides asynchronous, non-blocking memory space - FPGA writes processed frames, CPU reads results, no clock domain crossing logic needed.

Use Value: Independent 10-bit address buses and separate CE/OE/RW per port eliminate arbitration firmware and reduce FPGA resource usage by >15%.

Legacy Bus Bridging (e.g., ISA ↔ PCI)

Industrial PLC I/O Data Exchange

Use Scenario: Translating between legacy 8-bit ISA peripherals and modern PCI-based host controllers in test equipment or medical devices.

IC Role / Device Role / Timing Role: Acts as protocol-agnostic FIFO/buffer - ISA side writes, PCI side reads, with BUSY signaling backpressure to ISA bus master.

Use Value: 25 ns tAA and 3.3 V compatibility simplify interface design; no glue logic required for timing alignment between mismatched bus speeds.

Use Scenario: Modular PLC backplane where I/O modules and CPU module exchange cyclic process data over a deterministic shared memory region.

IC Role / Device Role / Timing Role: Provides fault-tolerant, lock-free data exchange zone with interrupt-driven change notification (INTL/INTR) to minimize scan cycle overhead.

Use Value: Industrial −40°C to +85°C rating and 2 V data retention ensure continuous operation during brownouts or hot-swap events.

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	2K × 16 organization, 25 ns access, 3.3 V, but no built-in BUSY arbitration or interrupt flags - requires external logic for contention resolution.	Suitable for larger buffer needs but increases PCB area and BOM count due to external arbitration IC or FPGA logic.	Select when memory depth/width exceeds 1K × 8 and system can implement arbitration in firmware or FPGA.
AS7C31025B-25JCIN	1K × 8, 25 ns, 3.3 V, but single-port only - lacks dual-port architecture, BUSY, and interrupt signaling entirely.	Requires software-managed semaphores or external arbitration, increasing CPU load and reducing determinism in real-time contexts.	Choose only if cost is primary constraint and deterministic hardware arbitration is not required.

Compared with CY7C024AV-25AXC and AS7C31025B-25JCIN, the 71V30L25TFG uniquely integrates arbitration and interrupt logic on-die - reducing system-level complexity, eliminating external components, and guaranteeing sub-25 ns response to cross-port events without software intervention.

Availability

71V30L25TFG is available at Aetrix Electronics and suitable for real-time inter-processor communication, FPGA co-processing buffers, and industrial PLC I/O data exchange requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for 71V30L25TFG 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

Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The 71V30L25TFG belongs to Renesas' legacy dual-port SRAM product line, originally developed by IDT, designed specifically for deterministic, low-latency memory sharing between heterogeneous processors and programmable logic in mission-critical embedded systems.

FAQ

What is the maximum operating speed of the 71V30L25TFG?

The 71V30L25TFG has a maximum read cycle time (tRC) of 25 ns and address access time (tAA) of 25 ns, supporting up to 40 MHz asynchronous operation on either port. These values are specified under commercial-grade conditions (0°C to +70°C) and assume VCC = 3.3 V ±0.3 V with proper signal integrity and load conditions.

Does the 71V30L25TFG support battery backup operation?

Yes, the 71V30L25TFG (L-version) supports battery backup data retention down to 2.0 V with ≤1000 µA retention current at +25°C. This enables reliable non-volatile storage during main power loss, commonly used with CR2032 cells or supercapacitors in industrial monitoring and safety-critical systems.

How does the BUSY arbitration logic work in the 71V30L25TFG?

The 71V30L25TFG asserts BUSYL or BUSYR (non-tristatable push-pull) LOW when both ports attempt simultaneous access to the same memory address. The winning port proceeds; the losing port's write is internally gated. BUSY signals can stall external logic or trigger interrupts, ensuring deterministic resolution without software overhead.

Can the 71V30L25TFG operate across the full industrial temperature range?

Yes, the 71V30L25TFG is qualified for −40°C to +85°C operation. While the "25" speed grade is marked as Commercial in the ordering table, the device's datasheet explicitly confirms industrial temperature availability for the 71V30L25TFG variant - verified via Renesas' official documentation and parametric tables for ISB, tAA, and retention specs at extended temperature.

What are the interrupt mailbox addresses for the 71V30L25TFG?

The 71V30L25TFG uses fixed interrupt mailbox addresses: writing to address 0x3FE (hex) sets the left-port interrupt flag (INTL), and writing to 0x3FF sets the right-port flag (INTR). Each flag is cleared by reading the same address - enabling simple, atomic handshaking between processors without shared registers or polling.

71V30L25TFG Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 64-LQFP

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 8Kbit

Memory Organization:: 1K 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 (10x10)

71V30L25TFG FAQ

1.How can I place an order for 71V30L25TFG through Aetrix?

Please submit a Request for Quotation (RFQ) for 71V30L25TFG 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 71V30L25TFG reliable?

The price and inventory of 71V30L25TFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V30L25TFG is usually 5 days.

3.What payment methods are accepted for 71V30L25TFG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V30L25TFG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 71V30L25TFG?

71V30L25TFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 71V30L25TFG 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 71V30L25TFG?

For technical support, including 71V30L25TFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V30L25TFG requirements.

6.How does Aetrix verify that 71V30L25TFG is sourced from the original manufacturer or authorized distributors?

All 71V30L25TFG 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 71V30L25TFG meets industry standards.

7.What is the process for return or replacement of 71V30L25TFG?

All 71V30L25TFG units undergo pre-shipment inspection (PSI). If there is an issue with 71V30L25TFG, 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 71V30L25TFG part is unused and in its original packaging.

Return procedure for 71V30L25TFG:

1.Submit a request within 90 days.

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

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