Renesas 7005L15JG8

Overview

7005L15JG8 from IDT 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 ±10% single-supply operation, and integrated hardware semaphore/arbitration logic. It enables simultaneous asynchronous access to the same memory location and supports master/slave cascading for 16-bit+ bus expansion in real-time inter-processor communication systems.

For engineers reviewing the 7005L15JG8 datasheet, 7005L15JG8 pinout, 7005L15JG8 application, or 7005L15JG8 equivalent, key selection criteria include dual-port contention resolution timing (tBDD ≤ 30 ns), low-power standby current (1 mW typ.), battery-backed data retention at 2 V, and TQFP-64 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The 7005L15JG8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves port conflicts via BUSY flag assertion and supports both CE-controlled and address-match-based arbitration modes.

It integrates eight dedicated semaphore flags (addressed by A0–A2), interrupt generation (INTL/INTR), and Master/Slave select (M/S) for hierarchical system design. The device uses CMOS process technology and supports TTL-compatible signaling with push-pull BUSY/INT outputs - no external pull-ups required.

Key Specifications

Pinout & Package

7005L15JG8 is housed in a 64-pin thin quad flatpack (TQFP) with 0.5 mm pitch, JEDEC MO-220 compliant. All VCC pins require local decoupling; all GND pins must be connected to ground plane for signal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C38098B-15JCIN, the 7005L15JG8 uniquely delivers 5 V compatibility, hardware semaphore support, and deterministic BUSY arbitration in a drop-in TQFP-64 footprint - critical for legacy industrial and avionics designs.

Availability

7005L15JG8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and industrial PLC data exchange requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 7005L15JG8 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 sensor solutions, now part of Renesas Electronics since 2019.

The IDT7005 product line was designed specifically for high-reliability dual-ported memory applications in multi-processor systems, emphasizing deterministic arbitration, low-power standby, and seamless 5 V integration.

FAQ

What is the guaranteed maximum access time for the 7005L15JG8?

The 7005L15JG8 guarantees a maximum read cycle time (tRC) of 15 ns under commercial operating conditions (0°C to +70°C, VCC = 5.0 V ±10%). This value is production-tested and applies to both ports independently. The 15 ns rating reflects worst-case performance across voltage, temperature, and process corners - no derating is required for nominal 5 V systems.

Does the 7005L15JG8 support battery backup operation, and what is the minimum retention voltage?

Yes, the 7005L15JG8 supports battery backup operation with guaranteed data retention down to VCC = 2.0 V (minimum), as specified in Table 9 of the datasheet. At this voltage, typical data retention current is 100 µA (max 4000 µA over military range), enabling extended hold time during main supply failure without external circuitry.

How does the M/S pin affect BUSY signal behavior on the 7005L15JG8?

When M/S = H, the 7005L15JG8 operates as a master: BUSYL and BUSYR become push-pull outputs that assert LOW during port contention. When M/S = L, it operates as a slave: BUSYL and BUSYR become inputs that must be driven LOW by a master device to inhibit writes - enabling hierarchical multi-device arbitration without external logic.

Can the 7005L15JG8 perform simultaneous read operations from both ports to the same memory address?

Yes, the 7005L15JG8 uses true dual-port SRAM cells that allow concurrent reads from both left and right ports to identical addresses with no timing penalty or data corruption. This capability is inherent to the cell architecture and requires no special configuration - it functions identically across all supported speed grades and temperature ranges.

What package type and dimensions does the 7005L15JG8 use?

The 7005L15JG8 is packaged in a 64-pin thin quad flatpack (TQFP) with body dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. This JEDEC MO-220 compliant package supports standard SMT reflow profiles and provides optimal thermal and electrical performance for industrial applications.