Renesas 7005L15J

Overview

7005L15J from IDT (Integrated Device Technology) is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 15 ns maximum read cycle time (commercial grade), 5 V single-supply operation, and integrated hardware semaphore/arbitration logic. It enables simultaneous asynchronous access to shared memory in real-time inter-processor communication systems such as radar signal processors and industrial motion controllers.

For engineers reviewing the 7005L15J datasheet, 7005L15J pinout, 7005L15J application, or 7005L15J equivalent, this page delivers verified timing specs (tRC = 15 ns), power metrics (700 mW active / 1 mW standby), dual-port arbitration behavior, BUSY/INT signal roles, and exact TQFP-64 package mapping - all confirmed for the 7005L15J variant.

Technical Context

The 7005L15J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port (A0L–A12L/I/O0L–I/O7L and A0R–A12R/I/O0R–I/O7R), enabling concurrent reads/writes without external logic. Its on-chip arbitration uses push-pull BUSY flags and M/S select to coordinate master/slave cascading in 16-bit+ systems.

Hardware semaphore support operates via dedicated SEM pins and A0–A2 addressing of eight flag registers; interrupt generation is triggered by writes to specific addresses (e.g., 1FFF_H sets INTR). Data retention at 2 V (100 µA typical ICCDR) is guaranteed for battery backup operation.

Key Specifications

Pinout & Package

7005L15J is packaged in a 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, lead pitch 0.5 mm. All VCC pins require local decoupling; GND pins must be solidly connected to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15JC and IDT70V25L15PF, the 7005L15J uniquely supports 5 V TTL compatibility, battery backup at 2 V, and direct M/S cascading - making it irreplaceable in cost-sensitive, mixed-voltage, or battery-backed commercial embedded systems.

Availability

7005L15J is available at Aetrix Electronics and suitable for real-time inter-processor communication, radar signal processing, and industrial motion control applications requiring stable component supply across multi-year production cycles.

Supply support for 7005L15J 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas Electronics in 2019.

The IDT7005 family was designed specifically for deterministic, low-latency shared-memory architectures in dual-CPU and DSP-FPGA systems - emphasizing hardware arbitration, semaphore support, and battery-retention capability.

FAQ

What is the maximum operating temperature range for the 7005L15J?

The 7005L15J is rated for commercial temperature operation only: 0°C to +70°C. It is not qualified for industrial (−40°C to +85°C) or military temperature ranges. This is explicitly defined in the "Maximum Operating Temperature and Supply Voltage" table and confirmed by ordering code suffix 'J' (commercial grade).

Does the 7005L15J support true simultaneous read operations from both ports to the same memory address?

Yes, the 7005L15J implements true dual-port memory cells that allow concurrent reads from both left and right ports to identical addresses without contention or timing penalty. This is a core feature stated in the "Features" section and validated by functional block diagram and truth tables.

How does the M/S pin affect BUSY signal behavior in the 7005L15J?

When M/S = HIGH, BUSYL and BUSYR are push-pull outputs indicating port contention; when M/S = LOW, they become inputs accepting BUSY signals from upstream masters. This enables hierarchical arbitration in cascaded configurations - a key capability documented in Pin Names and Truth Table IV.

What is the minimum supply voltage required to retain data in the 7005L15J during power loss?

The 7005L15J guarantees data retention down to 2.0 V (VDR), as specified in DC Electrical Characteristics Table 9. At this voltage, typical data retention current is 100 µA, enabling years of retention on small backup batteries - a defining trait of the 'L' (low-power) variant.

Can the 7005L15J be used in a 16-bit data path without external logic?

Yes - the 7005L15J supports 16-bit expansion via Master/Slave configuration using the M/S pin. Two devices can be cascaded to form a 8K × 16 memory with full-speed operation and no external arbitration logic, as described in the "Description" section and Functional Block Diagram.