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

Renesas 7008L20PFI

Name: 7008L20PFI
Brand: Renesas
SKU: 7008L20PFI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7008L20PFI

Manufacturer:: Renesas

Category:: Memory

Package:: 100-LQFP

Datasheet:: 7008L20PFI.pdf

Description:: IC SRAM 512KBIT PARALLEL 100TQFP

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Product details

Overview

IDT7008L20PFI from Integrated Device Technology (IDT) is a high-speed 64K × 8 true dual-port static RAM with independent left/right ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% supply, and integrated semaphore/arbitration logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the IDT7008L20PFI datasheet, IDT7008L20PFI pinout, IDT7008L20PFI application, or IDT7008L20PFI equivalent, key selection criteria include BUSY/INT flag timing, M/S master/slave configuration, dual CE control per port, low-power standby (1 mW typ.), and TQFP-100 packaging for space-constrained industrial controllers.

Technical Context

The IDT7008L20PFI implements fully asynchronous dual-port architecture with separate address, data, and control buses for left (L) and right (R) ports-enabling simultaneous read/write to same memory location. Its on-chip arbitration logic resolves contention via BUSY flag assertion and supports hardware semaphore signaling using A0–A2 addressing of eight shared flags.

It operates in Master/Slave cascading mode: M/S = VIH configures BUSYL/BUSYR as push-pull outputs for arbitration; M/S = VIL configures them as inputs to accept BUSY from master. Interrupts are triggered by writes to FFFE_H (INTL) or FFFF_H (INTR), with tINS/tINR ≤20 ns.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	64K × 8 bits (512 Kbit), fully random-access SRAM array
Access Time (max)	20 ns - guarantees worst-case read latency under industrial temperature (−40°C to +85°C) and 5V ±10%
Supply Voltage	4.5 V to 5.5 V - compatible with standard TTL logic families without level-shifting
Standby Current (ISB3)	0.2 mA typ. - ultra-low power full standby mode with CMOS-level inputs
Operating Temperature	−40°C to +85°C - qualified for industrial-grade reliability in harsh environments
Package	100-pin TQFP (14 mm × 14 mm × 1.4 mm) - surface-mount, RoHS-compliant, green part
Bus Width Support	Dual 8-bit I/O ports (I/O0L–I/O7L / I/O0R–I/O7R) - enables 16-bit+ word expansion via M/S cascading

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant green variant.

Pin/Terminal	Circuit Role	Design Meaning
A0L–A15L	Left port address inputs	16-bit address bus for left-side memory access; decoded independently from right port
A0R–A15R	Right port address inputs	16-bit address bus for right-side memory access; no timing dependency on left port
I/O0L–I/O7L	Left port bidirectional data	8-bit data path; tri-stated when OEL = VIH or CE0L/CE1L = VIH
I/O0R–I/O7R	Right port bidirectional data	8-bit data path; tri-stated when OER = VIH or CE0R/CE1R = VIH
R/WL / R/WR	Read/write control per port	Active-low write enable; drives I/O pins as outputs during write, inputs during read
OEL / OER	Output enable per port	Controls output drivers only; does not affect internal memory operation or CE power-down
CE0L, CE1L / CE0R, CE1R	Dual chip enables per port	Enable depth expansion without external logic; ISB1/ISB2/ISB3 modes defined by CE logic levels
SEML / SEMR	Semaphore enable	High = RAM access; Low = semaphore register access (A0–A2 select one of eight flags)
INTL / INTR	Interrupt flags	Open-drain compatible push-pull outputs; asserted by opposite port write to FFFE_H/FFFF_H
BUSYL / BUSYR	Busy arbitration signals	Push-pull outputs (Master) or inputs (Slave); inhibit writes during contention; tBDD ≤20 ns
M/S	Master/Slave select	VIH = Master (BUSY outputs); VIL = Slave (BUSY inputs); enables multi-device 16-bit+ systems
VCC / GND	Power and ground	All VCC pins must be connected; all GND pins must be connected - no floating supplies

Key Features

Feature	Design Value
True dual-port memory cells	Enables simultaneous reads from same address on both ports - eliminates software polling or lock-step synchronization
Hardware semaphore logic	Eight dedicated flags accessible via A0–A2 and SEM pin - provides atomic resource locking without CPU intervention
Automatic power-down control	Dual CE per port (CE0/CE1) enables fine-grained standby: ISB3 = 0.2 mA typ. with CMOS inputs
Master/Slave cascading architecture	M/S pin configures BUSY directionality - allows error-free 16-bit+ word expansion with no external glue logic
Industrial-grade timing assurance	tAA/tACE/tAOE ≤20 ns max across −40°C to +85°C - validated for deterministic real-time response
Non-tri-state BUSY/INT outputs	Push-pull (not open-drain) BUSYL/BUSYR/INTL/INTR - eliminates external pull-ups and reduces BOM count

Applications

Industrial PLC Communication Module	Real-Time Avionics Data Buffer
Use Scenario: Dual-CPU architecture where one processor handles I/O scanning and the other runs motion control algorithms, requiring synchronized data exchange. IC Role / Device Role / Timing Role: Shared memory buffer with hardware arbitration - acts as mailbox between CPUs with sub-20 ns read latency and automatic BUSY flag coordination. Use Value: Eliminates software semaphores and polling delays; ensures deterministic inter-processor messaging at 50 kHz update rates.	Use Scenario: Flight management system (FMS) with redundant processors exchanging sensor fusion results and navigation state vectors. IC Role / Device Role / Timing Role: Dual-port SRAM with interrupt-driven notification - INTL/INTR flags signal new data availability without bus contention. Use Value: Reduces inter-processor latency to ≤20 ns; supports DO-254 Level A certification via predictable hardware arbitration.
Medical Imaging Frame Store	Automotive ADAS Sensor Fusion Hub
Use Scenario: Ultrasound machine capturing 12-bit pixel streams at 100 MHz while host CPU processes frames at 60 fps. IC Role / Device Role / Timing Role: High-bandwidth frame buffer - left port accepts parallel ADC data; right port feeds GPU/DMA engine with zero-wait-state reads. Use Value: Sustains 800 MB/s aggregate bandwidth (20 ns × 8-bit × 2 ports); avoids FIFO overflow during burst acquisition.	Use Scenario: Radar-camera fusion ECU aggregating point cloud data from 77 GHz radar and 4K camera streams in autonomous driving stack. IC Role / Device Role / Timing Role: Time-critical shared memory with semaphore-controlled access - prevents race conditions during simultaneous LIDAR/camera timestamp alignment. Use Value: Hardware semaphore resolution <5 ns; guarantees atomic update of fused object list without CPU cycle overhead.

Industrial PLC Communication Module

Real-Time Avionics Data Buffer

Use Scenario: Dual-CPU architecture where one processor handles I/O scanning and the other runs motion control algorithms, requiring synchronized data exchange.

IC Role / Device Role / Timing Role: Shared memory buffer with hardware arbitration - acts as mailbox between CPUs with sub-20 ns read latency and automatic BUSY flag coordination.

Use Value: Eliminates software semaphores and polling delays; ensures deterministic inter-processor messaging at 50 kHz update rates.

Use Scenario: Flight management system (FMS) with redundant processors exchanging sensor fusion results and navigation state vectors.

IC Role / Device Role / Timing Role: Dual-port SRAM with interrupt-driven notification - INTL/INTR flags signal new data availability without bus contention.

Use Value: Reduces inter-processor latency to ≤20 ns; supports DO-254 Level A certification via predictable hardware arbitration.

Medical Imaging Frame Store

Automotive ADAS Sensor Fusion Hub

Use Scenario: Ultrasound machine capturing 12-bit pixel streams at 100 MHz while host CPU processes frames at 60 fps.

IC Role / Device Role / Timing Role: High-bandwidth frame buffer - left port accepts parallel ADC data; right port feeds GPU/DMA engine with zero-wait-state reads.

Use Value: Sustains 800 MB/s aggregate bandwidth (20 ns × 8-bit × 2 ports); avoids FIFO overflow during burst acquisition.

Use Scenario: Radar-camera fusion ECU aggregating point cloud data from 77 GHz radar and 4K camera streams in autonomous driving stack.

IC Role / Device Role / Timing Role: Time-critical shared memory with semaphore-controlled access - prevents race conditions during simultaneous LIDAR/camera timestamp alignment.

Use Value: Hardware semaphore resolution <5 ns; guarantees atomic update of fused object list without CPU cycle overhead.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress CY7C028V-20AC	5V-only, 20 ns access, 64K×16 organization, 100-pin TQFP - wider data bus but no M/S cascading support	Requires external logic for 16-bit+ expansion; lacks integrated semaphore arbitration	Select when 16-bit native word width is required and arbitration is handled in firmware
Renesas R1EX24064ASAS-20	3.3V core, 20 ns access, 64K×8, 100-pin TQFP - lower voltage, higher ICC active current (220 mA vs. 180 mA)	Needs level shifters for 5V systems; no BUSY/INT hardware arbitration logic	Select for mixed-voltage designs where power efficiency outweighs need for hardware arbitration

Compared with CY7C028V-20AC and R1EX24064ASAS-20, the IDT7008L20PFI uniquely delivers 5V-compatible dual-port operation with on-chip M/S cascading, semaphore registers, and push-pull BUSY/INT - reducing PCB area, BOM count, and firmware complexity in tightly coupled multi-processor systems.

Availability

IDT7008L20PFI is available at Aetrix Electronics and suitable for industrial PLCs, avionics data buffers, and medical imaging frame stores requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7008L20PFI 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 in 2019. It pioneered high-performance dual-port SRAM architectures for real-time systems.

The IDT7008L20PFI belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in industrial control, aerospace, and medical equipment where hardware-enforced arbitration and sub-20 ns latency are mandatory.

FAQ

What is the maximum operating temperature range for the IDT7008L20PFI?

The IDT7008L20PFI is rated for industrial temperature operation from −40°C to +85°C. This specification is guaranteed across all AC and DC electrical parameters, including 20 ns access time, BUSY arbitration timing, and standby current (ISB3 = 0.2 mA typ.). The device uses CMOS process technology optimized for thermal stability in uncontrolled environments.

How does the M/S pin configure BUSY behavior in the IDT7008L20PFI?

In the IDT7008L20PFI, the M/S pin determines BUSY signal directionality: when M/S = VIH, BUSYL and BUSYR function as push-pull outputs indicating local port contention; when M/S = VIL, they become inputs accepting BUSY assertions from a master device. This enables seamless cascading without external logic - critical for 16-bit+ memory expansion.

What is the purpose of the SEML and SEMR pins on the IDT7008L20PFI?

The SEML and SEMR pins on the IDT7008L20PFI select between RAM access (SEM = VIH) and semaphore register access (SEM = VIL). When SEM is low, A0–A2 address one of eight hardware semaphore flags, and I/O0 writes the flag value while all I/O pins (I/O0–I/O7) read it back - enabling atomic resource locking without CPU involvement.

Can the IDT7008L20PFI operate with only one port enabled?

Yes - the IDT7008L20PFI supports single-port operation. When CE0L/CE1L = VIH (left port deselected) and CE0R/CE1R = VIL (right port enabled), the device functions as a standard 64K×8 SRAM with full 20 ns access time on the right port. Standby current drops to ISB4 = 80 mA typ. (TTL inputs) or 80 mA typ. (CMOS inputs), preserving power efficiency.

What interrupt addresses trigger INTL and INTR in the IDT7008L20PFI?

In the IDT7008L20PFI, writing to address FFFE_H with CER = R/WR = VIL asserts INTL (left port interrupt), and writing to FFFF_H with CEL = R/WL = VIL asserts INTR (right port interrupt). Clearing is symmetric: reading FFFE_H with CEL = OEL = VIL clears INTL; reading FFFF_H with CER = OER = VIL clears INTR - all with tINS/tINR ≤20 ns.

7008L20PFI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 100-LQFP

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:: 20ns

Access Time:: 20 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-TQFP (14x14)

7008L20PFI FAQ

1.How can I place an order for 7008L20PFI through Aetrix?

Please submit a Request for Quotation (RFQ) for 7008L20PFI 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 7008L20PFI reliable?

The price and inventory of 7008L20PFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7008L20PFI is usually 5 days.

3.What payment methods are accepted for 7008L20PFI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7008L20PFI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7008L20PFI?

7008L20PFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7008L20PFI 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 7008L20PFI?

For technical support, including 7008L20PFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7008L20PFI requirements.

6.How does Aetrix verify that 7008L20PFI is sourced from the original manufacturer or authorized distributors?

All 7008L20PFI 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 7008L20PFI meets industry standards.

7.What is the process for return or replacement of 7008L20PFI?

All 7008L20PFI units undergo pre-shipment inspection (PSI). If there is an issue with 7008L20PFI, 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 7008L20PFI part is unused and in its original packaging.

Return procedure for 7008L20PFI:

1.Submit a request within 90 days.

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

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