Renesas 7006L15JG8

Overview

7006L15JG8 from IDT is a high-speed 16K × 8 (128 Kbit) true dual-port static RAM with independent left/right ports, 15 ns max read cycle time (commercial grade), 5 V ±10% single supply, and integrated hardware semaphore/arbitration logic for concurrent access coordination. It enables error-free 16-bit-or-wider memory expansion via Master/Slave cascading in real-time embedded control systems.

For engineers reviewing the 7006L15JG8 datasheet, 7006L15JG8 pinout, 7006L15JG8 application, or 7006L15JG8 equivalent, this device is selected for deterministic port arbitration, battery-backed data retention down to 2 V, and simultaneous read capability across ports-critical for motion control, digital signal co-processing, and legacy bus bridging where timing predictability and contention resolution are non-negotiable.

Technical Context

The 7006L15JG8 implements fully asynchronous dual-port architecture with separate address, data, and control buses per port, enabling independent read/write operations without external logic. Its on-chip arbitration logic resolves port conflicts using BUSY flag signaling and M/S-selectable master/slave configuration.

It supports two distinct memory access modes: standard RAM access (CE = LOW, SEM = HIGH) and semaphore register access (CE = HIGH, SEM = LOW), with dedicated INT/SEMAPHORE pins and strict timing windows (e.g., tSOP = 10 ns, tSPS = 5 ns) ensuring deterministic inter-port synchronization.

Key Specifications

Pinout & Package

7006L15JG8 is packaged in a 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, with 0.5 mm lead pitch and exposed thermal pad. All VCC and GND pins require direct connection per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and IDT70V27L15PF8, the 7006L15JG8 delivers optimal fit for cost-sensitive, space-constrained 5 V designs requiring minimal BOM changes, deterministic arbitration, and battery-retention capability-without over-specifying voltage or package requirements.

Availability

7006L15JG8 is available at Aetrix Electronics and suitable for motor control systems, digital signal co-processing, and legacy bus bridge interfaces requiring stable component supply, long-term lifecycle support, and guaranteed commercial-temperature performance.

Supply support for 7006L15JG8 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.

The IDT7006 family was designed specifically for real-time embedded systems requiring deterministic dual-port memory access, hardware semaphore support, and seamless integration into 5 V TTL/CMOS architectures.

FAQ

What is the maximum operating frequency supported by the 7006L15JG8?

The 7006L15JG8 has a 15 ns maximum read cycle time (tRC), supporting sustained operation up to approximately 66.7 MHz per port under commercial conditions. This timing is guaranteed across the full 0°C to +70°C range with VCC = 5.0 V ±10%. The device does not require clocking-it operates asynchronously, so actual throughput depends on system-level address/data setup and hold constraints, not a fixed clock frequency. The 7006L15JG8 achieves this performance without external wait-state generation.

Does the 7006L15JG8 support battery backup operation, and what voltage threshold maintains data integrity?

Yes, the 7006L15JG8 supports battery backup operation with guaranteed data retention down to 2.0 V (VDR = 2.0 V min). In data retention mode, ICCDR is specified at ≤4000 µA (military/industrial) or ≤1500 µA (commercial) when VCC drops below 2.0 V. This allows integration with coin-cell or supercapacitor backup sources without additional voltage monitoring circuitry. The 7006L15JG8 enters retention automatically when VCC falls below the threshold-no control signal is required.

How does the Master/Slave (M/S) pin affect BUSY flag behavior in the 7006L15JG8?

When M/S = HIGH, the 7006L15JG8 operates as a Master: BUSYL and BUSYR become push-pull outputs that assert during port contention. When M/S = LOW, it operates as a Slave: BUSYL and BUSYR become inputs, allowing external BUSY signals from a Master device to gate writes. This configuration enables scalable multi-device arbitration-e.g., one Master coordinates up to seven Slaves in a 128-bit-wide memory subsystem. The 7006L15JG8's tWB = 0 ns ensures immediate response to incoming BUSY assertions in Slave mode.

Can the 7006L15JG8 perform simultaneous reads from both ports to the same memory address?

Yes, the 7006L15JG8 supports true simultaneous reads to the same memory address from both ports without conflict or timing penalty. Its memory cell architecture permits concurrent access because each port has independent sense amplifiers and data paths. This capability is explicitly confirmed in the datasheet's "Features" section and verified in Truth Table I. No arbitration delay or BUSY assertion occurs during such operations-valid data appears on both I/O buses within tAA ≤ 15 ns after address stabilization.

What are the key timing parameters governing semaphore flag access in the 7006L15JG8?

Semaphore access in the 7006L15JG8 requires CE = HIGH and SEM = LOW. Key timing parameters include tSOP = 10 ns (semaphore update pulse width), tSAA = 15 ns (semaphore address access time), and tSPS = 5 ns (semaphore contention window). These ensure atomic flag manipulation: writing to A0–A2 selects one of eight semaphore registers, and tSPS guarantees that competing writes resolve deterministically. The 7006L15JG8 enforces these windows strictly-violation risks metastability or undefined flag state.