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

Renesas 7007L20J

Name: 7007L20J
Brand: Renesas
SKU: 7007L20J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 7007L20J

Manufacturer:: Renesas

Category:: Memory

Package:: 68-LCC (J-Lead)

Datasheet:: 7007L20J.pdf

Description:: IC SRAM 256KBIT PARALLEL 68PLCC

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Product details

Overview

IDT7007L from IDT (now Renesas) is a high-speed 32K × 8 dual-port static RAM with independent left/right asynchronous ports, 20 ns max access time (industrial grade), TTL-compatible 5V ±10% operation, and on-chip semaphore/interrupt arbitration logic - used in real-time inter-processor communication, motion control systems, and industrial PLC memory buffers.

For engineers reviewing the IDT7007L datasheet, IDT7007L pinout, IDT7007L application, or IDT7007L equivalent, key selection criteria include BUSY-flag arbitration timing (tBDD ≤ 30 ns), dual-port power-down current (ISB3 ≤ 5 µA), M/S master/slave configuration support, and compatibility with 68-pin PLCC or 80-pin TQFP PCB footprints.

Technical Context

The IDT7007L implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (A0L–A14L/I/O0L–I/O7L/R/WL/CEL/OEL on left; A0R–A14R/I/O0R–I/O7R/R/WR/CER/OER on right), enabling simultaneous read/write to same or different addresses without external logic. Its on-chip arbitration uses push-pull BUSY outputs (not open-drain) and supports both CE- and address-match–triggered BUSY assertion.

It integrates dedicated semaphore registers (8 flags, addressed via A0–A2) accessible when SEM = VIL and CE = VIH, plus interrupt mailbox functionality at fixed addresses 7FFE_H (INTL set/clear) and 7FFF_H (INTR set/clear), with tINS/tINR ≤ 20 ns. All I/Os are TTL-compatible with VOH ≥ 2.4 V and VOL ≤ 0.4 V under 4 mA load.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	32K × 8 bits (256 Kbit total), two independent addressable ports
Access Time (max)	20 ns - guarantees deterministic latency for real-time inter-processor handshaking
Supply Voltage	5.0 V ±10% - operates directly from standard TTL-regulated rails, no LDO required
Standby Current (ISB3)	5 µA (typ.) - enables ultra-low-power sleep mode when both ports disabled via CMOS-level CE
Operating Temperature	–40°C to +85°C - qualified for industrial automation and embedded control environments
Package Options	68-pin PLCC (PLG68) and 80-pin TQFP (PNG80) - both RoHS-compliant, lead-free
Bus Interface	TTL-compatible inputs/outputs - interfaces directly with 5V microcontrollers, FPGAs, and ASICs without level shifters

Pinout & Package

Available in 68-pin PLCC (PLG68) and 80-pin TQFP (PNG80) packages. Both are surface-mount, lead-free, and RoHS-compliant. PLCC body size ≈ 24.1 mm × 24.1 mm × 4.3 mm; TQFP ≈ 14 mm × 14 mm × 1.4 mm.

Pin/Terminal	Circuit Role	Design Meaning
CEL / CER	Chip Enable (Left / Right)	Active-low enable per port; controls port power-down (ISB modes) and memory access gating
R/WL / R/WR	Read/Write Control (Left / Right)	Active-low write strobe; determines direction of data transfer on I/O bus during CE-active cycles
OEL / OER	Output Enable (Left / Right)	Active-low tri-state control for I/O drivers; allows shared bus usage without contention
A0L–A14L / A0R–A14R	Address Inputs (Left / Right)	15-bit address buses - each port independently accesses full 32K space; no address translation needed
I/O0L–I/O7L / I/O0R–I/O7R	Bidirectional Data (Left / Right)	8-bit parallel data paths; electrically isolated between ports; no internal bus contention
SEML / SEMR	Semaphore Enable (Left / Right)	Active-low select for semaphore register access (A0–A2 address 8 flags); distinct from RAM access mode
INTL / INTR	Interrupt Flag Output (Left / Right)	Open-collector compatible (push-pull), asserted when opposite port writes to 7FFE_H/7FFF_H
BUSYL / BUSYR	Busy Flag (Left / Right)	Push-pull output (MASTER) or input (SLAVE); blocks write if asserted; enables hardware arbitration without CPU polling
M/S	Master/Slave Select	High = BUSY output (MASTER), Low = BUSY input (SLAVE); enables cascaded multi-port memory expansion

Key Features

Feature	Design Value
True dual-port memory cells	Enables simultaneous reads/writes to same location - eliminates software locks for shared buffer coherency
On-chip semaphore logic	8 hardware flags (A0–A2) with atomic read/write - replaces discrete logic for resource locking in multi-CPU systems
Hardware BUSY arbitration	Sub-30 ns tBDD timing ensures deterministic resolution of port conflicts - no arbitration firmware overhead
Configurable MASTER/SLAVE topology	M/S pin enables daisy-chained 16-bit+ word expansion without external glue logic or timing skew compensation
Ultra-low ISB3 standby current	≤5 µA with CMOS-level CE deassertion - extends battery life in portable industrial HMI and edge controllers
Interrupt mailbox addressing	Dedicated 7FFE_H/7FFF_H locations provide zero-latency inter-processor signaling - avoids polling and reduces ISR latency

Applications

Industrial Motion Controller	Redundant PLC Memory Buffer
Use Scenario: Two synchronized CPUs (motion planner + servo executor) share real-time position and trajectory data via shared RAM. IC Role / Device Role / Timing Role: IDT7007L serves as deterministic, lock-free inter-processor memory with hardware BUSY arbitration and semaphore signaling. Use Value: Eliminates software mutex delays; 20 ns access + tBDD ≤ 30 ns ensures sub-100 ns worst-case data handoff - critical for 10 kHz servo loop timing.	Use Scenario: Primary and backup PLC CPUs maintain identical state in mirrored memory; automatic failover requires atomic flag updates. IC Role / Device Role / Timing Role: IDT7007L provides dual-port SRAM with independent interrupt/mailbox (7FFE_H/7FFF_H) and semaphore-controlled flag writes. Use Value: Hardware semaphore prevents race conditions during state sync; ISB3 ≤ 5 µA enables low-power hot-standby operation without memory refresh.
Medical Imaging Data Pipeline	Avionics Sensor Fusion Hub
Use Scenario: High-throughput image acquisition (FPGA) streams raw pixel data into memory while DSP performs real-time filtering and compression. IC Role / Device Role / Timing Role: IDT7007L acts as zero-wait-state frame buffer with independent read/write ports and concurrent access capability. Use Value: Simultaneous 20 ns reads/writes prevent pipeline stalls; TTL compatibility simplifies interface to FPGA I/O banks and DSP EMIF.	Use Scenario: Multiple sensor processors (IMU, GPS, barometer) write timestamped measurements to shared memory; flight controller reads fused data. IC Role / Device Role / Timing Role: IDT7007L functions as time-deterministic sensor data aggregator with hardware arbitration and interrupt-driven notification. Use Value: BUSY-flag arbitration prevents data corruption during concurrent writes; INTL/INTR flags reduce CPU polling overhead by >90% in safety-critical loops.

Industrial Motion Controller

Redundant PLC Memory Buffer

Use Scenario: Two synchronized CPUs (motion planner + servo executor) share real-time position and trajectory data via shared RAM.

IC Role / Device Role / Timing Role: IDT7007L serves as deterministic, lock-free inter-processor memory with hardware BUSY arbitration and semaphore signaling.

Use Value: Eliminates software mutex delays; 20 ns access + tBDD ≤ 30 ns ensures sub-100 ns worst-case data handoff - critical for 10 kHz servo loop timing.

Use Scenario: Primary and backup PLC CPUs maintain identical state in mirrored memory; automatic failover requires atomic flag updates.

IC Role / Device Role / Timing Role: IDT7007L provides dual-port SRAM with independent interrupt/mailbox (7FFE_H/7FFF_H) and semaphore-controlled flag writes.

Use Value: Hardware semaphore prevents race conditions during state sync; ISB3 ≤ 5 µA enables low-power hot-standby operation without memory refresh.

Medical Imaging Data Pipeline

Avionics Sensor Fusion Hub

Use Scenario: High-throughput image acquisition (FPGA) streams raw pixel data into memory while DSP performs real-time filtering and compression.

IC Role / Device Role / Timing Role: IDT7007L acts as zero-wait-state frame buffer with independent read/write ports and concurrent access capability.

Use Value: Simultaneous 20 ns reads/writes prevent pipeline stalls; TTL compatibility simplifies interface to FPGA I/O banks and DSP EMIF.

Use Scenario: Multiple sensor processors (IMU, GPS, barometer) write timestamped measurements to shared memory; flight controller reads fused data.

IC Role / Device Role / Timing Role: IDT7007L functions as time-deterministic sensor data aggregator with hardware arbitration and interrupt-driven notification.

Use Value: BUSY-flag arbitration prevents data corruption during concurrent writes; INTL/INTR flags reduce CPU polling overhead by >90% in safety-critical loops.

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	20 ns access, 32K × 8, but only 80-pin TQFP; no M/S pin - requires external arbitration logic for cascading	Lacks integrated MASTER/SLAVE expansion; no built-in semaphore registers	Choose when footprint is fixed to TQFP and system uses external arbitration; verify BUSY timing matches tBDD ≤ 30 ns requirement
Renesas 70V27L15PF8	15 ns access (faster), but commercial-only (0°C to +70°C); same PLCC/TQFP options and M/S support	Not rated for industrial temperature range; higher active power (ICC = 325 mA vs. 285 mA typ. for IDT7007L)	Choose only for commercial-grade designs needing <15 ns latency; confirm thermal design accommodates higher ISB1/ICC

Compared with CY7C028V-20AC and 70V27L15PF8, the IDT7007L uniquely combines industrial temperature rating, integrated semaphore/BUSY logic, and M/S expandability in one device - reducing BOM count and eliminating arbitration firmware in embedded control systems.

Availability

IDT7007L is available at Aetrix Electronics and suitable for industrial motion control, redundant PLC memory buffers, and medical imaging data pipelines requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7007L 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 (formerly Integrated Device Technology) is a global semiconductor leader specializing in microcontrollers, analog, power management, and memory solutions for industrial, automotive, and communications markets.

The IDT7007L belongs to Renesas' legacy high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency memory access are critical.

FAQ

What is the maximum operating temperature range for the IDT7007L?

The IDT7007L is specified for industrial temperature operation from –40°C to +85°C. This rating is confirmed in the Absolute Maximum Ratings and Recommended DC Operating Conditions tables of the official datasheet (DSC 2940/16, September 2019). It is not rated for military-grade (–55°C to +125°C) operation - that applies only to specific 7007X25 variants.

Does the IDT7007L support true simultaneous read operations on both ports to the same memory address?

Yes, the IDT7007L features true dual-ported memory cells that allow simultaneous reads from the same memory location on both left and right ports without contention or timing penalty. This capability is explicitly stated in the Features section and enabled by its independent address/data/control path architecture - no arbitration delay is incurred during concurrent reads.

How does the M/S pin affect BUSY signal behavior in the IDT7007L?

When M/S = HIGH, the IDT7007L operates as a MASTER: BUSYL and BUSYR are push-pull outputs that assert LOW to block writes during port contention. When M/S = LOW, it operates as a SLAVE: BUSYL and BUSYR become inputs, and external BUSY signals from a MASTER device must be applied to enable hardware write inhibition - as defined in Truth Table IV and the Functional Description section.

What are the valid address locations for interrupt flag control in the IDT7007L?

The IDT7007L uses fixed addresses 7FFE_H to set/clear the left port interrupt flag (INTL) and 7FFF_H to set/clear the right port interrupt flag (INTR). Writing to 7FFE_H with CEL = R/WL = LOW asserts INTL; reading 7FFE_H with CER = OER = LOW clears it. Identical logic applies to 7FFF_H for INTR, per Truth Table III and the Functional Description.

Can the IDT7007L be used in a 16-bit data bus configuration?

Yes, the IDT7007L supports 16-bit or wider word systems using its MASTER/SLAVE cascade capability. Two IDT7007L devices can be configured - one as MASTER (M/S = HIGH), one as SLAVE (M/S = LOW) - with shared address and control lines, enabling full-speed 16-bit access without external logic, as described in the Introduction and Features sections of the datasheet.

7007L20J Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 68-LCC (J-Lead)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 256Kbit

Memory Organization:: 32K 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:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 68-PLCC (24.21x24.21)

7007L20J FAQ

1.How can I place an order for 7007L20J through Aetrix?

Please submit a Request for Quotation (RFQ) for 7007L20J 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 7007L20J reliable?

The price and inventory of 7007L20J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7007L20J is usually 5 days.

3.What payment methods are accepted for 7007L20J?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7007L20J transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 7007L20J?

7007L20J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 7007L20J 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 7007L20J?

For technical support, including 7007L20J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7007L20J requirements.

6.How does Aetrix verify that 7007L20J is sourced from the original manufacturer or authorized distributors?

All 7007L20J 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 7007L20J meets industry standards.

7.What is the process for return or replacement of 7007L20J?

All 7007L20J units undergo pre-shipment inspection (PSI). If there is an issue with 7007L20J, 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 7007L20J part is unused and in its original packaging.

Return procedure for 7007L20J:

1.Submit a request within 90 days.

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

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