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

Renesas 7008L25G

Name: 7008L25G
Brand: Renesas
SKU: 7008L25G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7008L25G

Manufacturer:: Renesas

Category:: Memory

Package:: 84-BPGA

Datasheet:: 7008L25G.pdf

Description:: IC SRAM 512KBIT PARALLEL 84PGA

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Product details

Overview

IDT7008L25G from Integrated Device Technology (IDT) is a high-speed 64K × 8 true dual-port static RAM with independent left/right ports, 25 ns max access time (commercial grade), TTL-compatible 5V ±10% supply, and integrated semaphore/arbitration logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the IDT7008L25G datasheet, IDT7008L25G pinout, IDT7008L25G application, or IDT7008L25G equivalent, key selection considerations include BUSY flag arbitration timing (tBDD ≤ 25 ns), low standby power (1 mW typ.), dual chip-enable depth expansion, and Master/Slave cascading support for 16-bit+ data buses.

Technical Context

The IDT7008L25G implements fully asynchronous dual-port operation with separate address, control, and I/O pins per port. Its on-chip arbitration logic uses push-pull BUSY outputs (not tri-state) to resolve contention during simultaneous access to the same memory location.

It supports two distinct memory access modes: RAM array access (CE = VIL, SEM = VIH) and 8-bit semaphore register access (CE = VIH, SEM = VIL), with dedicated A0–A2 addressing for semaphore flags and interrupt mailbox locations at FFFE_H (INTL) and FFFF_H (INTR).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	64K × 8 bits (512 Kbit total); enables byte-wide independent reads/writes on both ports
Access Time (tAA)	25 ns max (commercial temp range); guarantees valid data within 25 ns after address stabilization
Supply Voltage	5.0 V ±10%; operates reliably across 4.5–5.5 V without level-shifting circuitry
Standby Power	1 mW typical (ISB3); enables ultra-low-power sleep mode when both ports disabled via CMOS-level CE
Operating Temperature	0°C to +70°C (commercial grade); validated for industrial control and telecom line cards
Bus Width Expansion	Master/Slave (M/S) pin enables seamless 16-bit+ word systems without external glue logic
Interrupt Support	Dedicated INTL/INTR flags triggered by writes to FFFE_H/FFFF_H; provides hardware mailbox signaling between processors

Pinout & Package

Package: 100-pin TQFP (PNG100), 14 mm × 14 mm × 1.4 mm body, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A15L	Left port address inputs	16-bit address bus for left-side memory access; fully independent from right port
I/O0L–I/O7L	Left port bidirectional data	8-bit parallel data path; high-impedance when OEL = VIH or CE0L/CE1L = VIH
R/WL	Left port read/write control	Active-low write enable; controls direction of I/O0L–I/O7L during memory cycle
OEL	Left port output enable	Enables data drivers on I/O0L–I/O7L only when CE0L = VIL and R/WL = VIH
CE0L, CE1L	Left port chip enables	Dual enables allow depth expansion: CE0L selects device, CE1L enables internal logic
SEML	Left port semaphore enable	When CE0L = VIH and SEML = VIL, accesses 8 semaphore flags (A0–A2 addressed)
INTL	Left port interrupt flag output	Open-drain compatible (push-pull); asserted when right port writes to FFFE_H
BUSYL	Left port busy indicator	Push-pull output (Master) or input (Slave); blocks writes when driven low during contention
M/S	Master/Slave configuration	M/S = VIH configures as Master (BUSYL/BUSYR outputs); M/S = VIL configures as Slave (inputs)

Key Features

Feature	Design Value
True dual-port architecture	Simultaneous read/write to same memory location permitted; no internal arbitration delay for non-contention cases
Hardware semaphore logic	Eight dedicated flags accessible via A0–A2; enables lock-step synchronization between co-located processors
Automatic power-down	CMOS-level CE disables internal circuitry; reduces ISB3 to 0.2 mA (typ.) with zero external control logic
Port-to-port arbitration	BUSY assertion resolves contention within tBDD ≤ 25 ns; ensures deterministic write inhibition without software polling
Interrupt mailbox addressing	Fixed FFFE_H/FFFF_H locations provide standardized inter-processor messaging; message content user-defined SRAM bytes

Applications

Industrial PLC Communication Module	Avionics Data Acquisition System
Use Scenario: Two independent microcontrollers share sensor data and control commands via shared memory in a redundant flight control unit. IC Role / Device Role / Timing Role: IDT7008L25G serves as the dual-port RAM buffer with hardware BUSY arbitration ensuring atomic updates to critical flight parameters. Use Value: Eliminates software mutex overhead; tBDD ≤ 25 ns guarantees sub-microsecond resolution of concurrent access to shared registers.	Use Scenario: Real-time data acquisition front-end where ADC controller writes raw samples while host processor reads and processes batches. IC Role / Device Role / Timing Role: IDT7008L25G acts as the high-speed ping-pong buffer with semaphore-controlled handshaking between acquisition and processing domains. Use Value: 25 ns access time sustains >30 MB/s sustained throughput; ISB3 = 0.2 mA enables low-power idle states between sample bursts.
Telecom Line Card Control Plane	Medical Imaging Subsystem
Use Scenario: Dual-core DSP subsystem exchanges packet metadata and status flags across a shared memory region in a 10Gbps line card. IC Role / Device Role / Timing Role: IDT7008L25G functions as the inter-processor communication hub with INTL/INTR flags signaling buffer readiness and error conditions. Use Value: Fixed FFFE_H/FFFF_H mailboxes provide deterministic interrupt latency <40 ns (tINS), enabling hard real-time response to packet events.	Use Scenario: MRI subsystem where FPGA-accelerated image reconstruction engine shares processed frames with ARM-based UI controller. IC Role / Device Role / Timing Role: IDT7008L25G operates as the frame buffer with Master/Slave cascading supporting 16-bit pixel data transfers between heterogeneous processors. Use Value: M/S pin enables direct 16-bit bus expansion using two IDT7008L25G devices-no external multiplexers or address decoding logic required.

Industrial PLC Communication Module

Avionics Data Acquisition System

Use Scenario: Two independent microcontrollers share sensor data and control commands via shared memory in a redundant flight control unit.

IC Role / Device Role / Timing Role: IDT7008L25G serves as the dual-port RAM buffer with hardware BUSY arbitration ensuring atomic updates to critical flight parameters.

Use Value: Eliminates software mutex overhead; tBDD ≤ 25 ns guarantees sub-microsecond resolution of concurrent access to shared registers.

Use Scenario: Real-time data acquisition front-end where ADC controller writes raw samples while host processor reads and processes batches.

IC Role / Device Role / Timing Role: IDT7008L25G acts as the high-speed ping-pong buffer with semaphore-controlled handshaking between acquisition and processing domains.

Use Value: 25 ns access time sustains >30 MB/s sustained throughput; ISB3 = 0.2 mA enables low-power idle states between sample bursts.

Telecom Line Card Control Plane

Medical Imaging Subsystem

Use Scenario: Dual-core DSP subsystem exchanges packet metadata and status flags across a shared memory region in a 10Gbps line card.

IC Role / Device Role / Timing Role: IDT7008L25G functions as the inter-processor communication hub with INTL/INTR flags signaling buffer readiness and error conditions.

Use Value: Fixed FFFE_H/FFFF_H mailboxes provide deterministic interrupt latency <40 ns (tINS), enabling hard real-time response to packet events.

Use Scenario: MRI subsystem where FPGA-accelerated image reconstruction engine shares processed frames with ARM-based UI controller.

IC Role / Device Role / Timing Role: IDT7008L25G operates as the frame buffer with Master/Slave cascading supporting 16-bit pixel data transfers between heterogeneous processors.

Use Value: M/S pin enables direct 16-bit bus expansion using two IDT7008L25G devices-no external multiplexers or address decoding logic required.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C028V-25AXC	25 ns access, 64K × 16 organization, 3.3 V supply; no built-in semaphore logic	Requires external arbitration logic for multi-processor sync; better suited for wide-bus, low-voltage systems	Select when 16-bit native bus width and 3.3 V operation outweigh need for integrated semaphores
AS7C364B-25JCIN	25 ns access, 64K × 8, 5 V supply; no BUSY/INT/SEM pins; single-port only	Lacks hardware arbitration-requires software-managed critical sections; no inter-processor signaling capability	Select only for cost-sensitive, single-CPU designs where dual-port features are unused

Compared with CY7C028V-25AXC and AS7C364B-25JCIN, the IDT7008L25G uniquely integrates full hardware arbitration, semaphore registers, and interrupt mailboxes in a 5 V, 64K × 8 package-enabling deterministic real-time IPC without external logic or software overhead.

Availability

IDT7008L25G is available at Aetrix Electronics and suitable for industrial PLC communication modules, avionics data acquisition systems, and telecom line card control planes requiring stable component supply with guaranteed long-term availability.

Supply support for IDT7008L25G 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

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.

The IDT7008L25G belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems requiring hardware-enforced memory coherency.

FAQ

What is the maximum operating temperature range for the IDT7008L25G?

The IDT7008L25G is rated for commercial temperature operation from 0°C to +70°C. It is not qualified for industrial temperature range (–40°C to +85°C); that specification applies only to select speed grades like IDT7008X20, not the '25' variant.

Does the IDT7008L25G support true simultaneous read operations on both ports?

Yes, the IDT7008L25G implements true dual-ported memory cells that permit simultaneous reads from the same or different addresses on left and right ports without contention or arbitration delay-only write-write or read-write conflicts trigger BUSY arbitration.

How does the M/S pin affect BUSY pin behavior on the IDT7008L25G?

When M/S = VIH, the IDT7008L25G 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 that inhibit writes when driven low by a Master device.

What are the valid interrupt mailbox addresses for the IDT7008L25G?

The IDT7008L25G uses fixed interrupt mailbox addresses: writing to FFFE_H asserts INTL (left port flag), and writing to FFFF_H asserts INTR (right port flag). Reading those addresses clears the respective flags, and both locations remain usable as general SRAM if interrupts are unused.

Can the IDT7008L25G be used in a 16-bit data bus configuration?

Yes-the IDT7008L25G supports 16-bit bus expansion via Master/Slave cascading. Two devices can be configured with one as Master (M/S = VIH) and one as Slave (M/S = VIL), using BUSY signals to coordinate access and eliminate external arbitration logic.

7008L25G Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 84-BPGA

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 512Kbit

Memory Organization:: 64K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 25ns

Access Time:: 25 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 84-PGA (27.94x27.94)

7008L25G FAQ

1.How can I place an order for 7008L25G through Aetrix?

Please submit a Request for Quotation (RFQ) for 7008L25G 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 7008L25G reliable?

The price and inventory of 7008L25G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7008L25G is usually 5 days.

3.What payment methods are accepted for 7008L25G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7008L25G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7008L25G?

7008L25G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7008L25G 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 7008L25G?

For technical support, including 7008L25G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7008L25G requirements.

6.How does Aetrix verify that 7008L25G is sourced from the original manufacturer or authorized distributors?

All 7008L25G 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 7008L25G meets industry standards.

7.What is the process for return or replacement of 7008L25G?

All 7008L25G units undergo pre-shipment inspection (PSI). If there is an issue with 7008L25G, 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 7008L25G part is unused and in its original packaging.

Return procedure for 7008L25G:

1.Submit a request within 90 days.

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

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