Renesas 7006L25JI8

Overview

7006L25JI8 from IDT is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum read cycle time (tRC), 1 mW typical standby power, and industrial temperature range (–40°C to +85°C). It integrates on-chip arbitration, semaphore logic, and BUSY/INT flags for real-time inter-processor communication in embedded control systems.

For engineers reviewing the 7006L25JI8 datasheet, 7006L25JI8 pinout, 7006L25JI8 application, or 7006L25JI8 equivalent, key selection criteria include simultaneous dual-port read capability, 2V data retention for battery backup, TTL-compatible 5V ±10% operation, and support for MASTER/SLAVE cascading in 16-bit memory systems.

Technical Context

The 7006L25JI8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion and supports semaphore signaling using A0–A2 address lines to access eight dedicated flags.

It operates in two distinct modes: RAM access (CE = VIL, SEM = VIH) and semaphore access (CE = VIH, SEM = VIL), with dedicated timing parameters for each-including tSAA (semaphore address access) and tSWRD (semaphore write-to-read delay)-ensuring deterministic inter-port synchronization.

Key Specifications

Pinout & Package

7006L25JI8 is packaged in a 68-pin ceramic PGA (PLG68) with 0.100" pin pitch. Pin assignments are symmetric for left (L) and right (R) ports, supporting identical signal routing on both sides of a PCB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AXC and AS7C316000B-25JIN, the 7006L25JI8 delivers unique value through integrated arbitration, 2V data retention, and true 5V TTL compatibility-making it optimal for legacy industrial and avionics designs requiring deterministic, low-power, drop-in dual-port memory.

Availability

7006L25JI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics interfaces, medical imaging buffers, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 7006L25JI8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions for communications, computing, and industrial markets.

The IDT7006 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems-featuring hardware arbitration, semaphore logic, and battery-backed operation to eliminate software overhead in safety-critical applications.

FAQ

What is the guaranteed maximum access time for the 7006L25JI8 in read operations?

The 7006L25JI8 guarantees a maximum read cycle time (tRC) of 25 ns across its full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This includes worst-case address access (tAA), chip enable access (tACE), and output enable access (tAOE) timing-all validated under actual operating conditions, not just characterization.

Does the 7006L25JI8 support battery backup operation, and what voltage is required?

Yes, the 7006L25JI8 supports battery backup operation with guaranteed data retention down to 2.0 V (VDR), as specified in Table 9 of the datasheet. In this mode, ICCDR is typically 100 µA (max 4000 µA for military grade), enabling long-term memory hold using standard 3 V coin cells with series diode or LDO regulation.

How does the M/S pin affect BUSY signal behavior on the 7006L25JI8?

When M/S = HIGH, the 7006L25JI8 operates as Master: BUSYL and BUSYR are push-pull outputs that assert during port contention. When M/S = LOW, it operates as Slave: BUSYL and BUSYR become inputs, allowing external BUSY signals from a Master device to gate writes-enabling hierarchical arbitration in multi-device systems.

Can the 7006L25JI8 perform simultaneous reads from both ports to the same memory location?

Yes, the 7006L25JI8 supports true simultaneous reads to the same memory address on both ports without arbitration delay or data corruption. This is enabled by its true dual-ported SRAM cell architecture-confirmed in the "Features" section and functional block diagram-and requires no BUSY flag assertion or timing penalty.

What package type and pin count does the 7006L25JI8 use, and is it RoHS-compliant?

The 7006L25JI8 uses a 68-pin ceramic PGA (PLG68) package with 0.100" pin pitch, as documented in Drawing 2739 drw 02a. Per IDT's ordering information and green parts documentation, the "J" suffix denotes lead-free (RoHS-compliant) construction with matte tin plating, meeting JEDEC J-STD-609A Class 2 requirements.