Renesas 7006L35J

Overview

7006L35J from IDT is a high-speed 16K × 8 (128 Kbit) dual-port static RAM with true independent left/right port access, 35 ns maximum read cycle time, 2 V data retention capability, and TTL-compatible 5 V ±10% single-supply operation-used in real-time inter-processor communication systems requiring simultaneous memory access without arbitration overhead.

For engineers reviewing the 7006L35J datasheet, 7006L35J pinout, 7006L35J application, or 7006L35J equivalent, this page delivers verified timing specs, master/slave semaphore arbitration behavior, BUSY flag timing under address-match conditions, industrial temperature support (–40°C to +85°C), and TQFP-64 package compatibility for embedded control and military-grade avionics interfaces.

Technical Context

The 7006L35J implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent read/write operations-even to the same memory location-managed by on-chip arbitration logic. Its M/S pin configures BUSY as output (master) or input (slave), supporting cascaded 16-bit+ word systems without external glue logic.

It integrates full hardware semaphore signaling (8 flags addressed via A0–A2), interrupt flag generation (INTL/INTR), and automatic power-down via CE-controlled standby modes. The device uses CMOS process technology, achieving 700 mW typical active power and 1 µW typical standby power in L-version configuration.

Key Specifications

Pinout & Package

7006L35J is packaged in a 64-pin thin quad flatpack (TQFP), body size 14 mm × 14 mm × 1.4 mm, with all VCC and GND pins distributed across four sides for optimal noise immunity and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-35JC and AS7C316000B-35TIN, the 7006L35J uniquely combines industrial temperature rating, 2 V data retention, and full hardware semaphore/BUSY arbitration in a TQFP-64 package-reducing BOM count and firmware complexity in safety-critical dual-processor designs.

Availability

7006L35J is available at Aetrix Electronics and suitable for real-time inter-processor communication, industrial motion control, and military vehicle data logging requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 7006L35J 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 high-performance memory, timing, and interface solutions for communications, computing, and industrial markets.

The 7006L35J belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor data exchange in mission-critical embedded systems where hardware-managed coherency is mandatory.

FAQ

What is the maximum operating temperature range supported by the 7006L35J?

The 7006L35J is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Maximum Operating Temperature and Supply Voltage" table and applies to all speed grades within the L-series, including the 35 ns variant. The device meets industrial qualification standards and is not rated for commercial (0°C to +70°C) or military (–55°C to +125°C) extremes unless explicitly ordered with those suffixes.

Does the 7006L35J support battery backup data retention, and at what voltage?

Yes, the 7006L35J supports battery backup data retention at 2 V, as specified in the "Data Retention Characteristics" section. In data retention mode (VCC = 2 V, CE > VHC), it maintains stored data with typical current draw of 100 µA (max 4000 µA). This feature is exclusive to the 'L' (low-power) version and is validated across the full industrial temperature range.

How does the M/S pin affect BUSY flag behavior on the 7006L35J?

When M/S = H (high), the 7006L35J operates as a master: BUSYL and BUSYR are push-pull outputs that assert low during port contention (e.g., address match). When M/S = L (low), it operates as a slave: BUSYL and BUSYR become inputs used to receive BUSY signals from a master device-enabling hierarchical arbitration in multi-device configurations without external logic.

Can the 7006L35J perform simultaneous reads from both ports to the same memory address?

Yes, the 7006L35J features true dual-port memory cells that allow simultaneous reads from both left and right ports to the identical memory location without conflict, delay, or data corruption. This capability is explicitly stated in the "Features" section and enabled by independent sense amplifiers and bitline structures per port-no arbitration or BUSY assertion occurs during concurrent reads.

What package type is used for the 7006L35J, and how many pins does it have?

The 7006L35J uses a 64-pin thin quad flatpack (TQFP) package, as confirmed in the "Pin Configurations" section (drawing 2739 drw 03) and ordering information. The package body measures approximately 14 mm × 14 mm × 1.4 mm and includes dedicated VCC and GND pins distributed across all four sides to minimize noise and improve thermal performance.