Renesas 7026L35G

Overview

7026L35G from IDT (Integrated Device Technology) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 35 ns max read cycle time, 1 mA typical standby current, and full on-chip semaphore arbitration logic - used in real-time inter-processor communication buffers for industrial motion controllers.

For engineers reviewing the 7026L35G datasheet, 7026L35G pinout, 7026L35G application, or 7026L35G equivalent, this page delivers verified timing specs, master/slave BUSY arbitration behavior, byte-select control semantics, and industrial-grade (-40°C to +85°C) operation under 5V ±10% supply.

Technical Context

The 7026L35G implements fully asynchronous dual-port access with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via push-pull BUSY outputs (BUSYL/BUSYR) when both ports access the same memory location simultaneously.

It supports semaphore flag management across eight dedicated registers (addressed by A0–A2), with write-to-read latency of 5 ns and contention window of 5 ns. The M/S pin configures master (BUSY output) or slave (BUSY input) mode, enabling cascaded 32-bit+ memory systems without external logic.

Key Specifications

Pinout & Package

7026L35G is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) package with 1.15″ × 1.15″ body size and gull-wing leads. Pin 1 is marked by a corner notch; all VCC pins require local decoupling, and all GND pins must be connected to system ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-35JC and IDT70V26S35PF, the 7026L35G uniquely delivers 5V TTL compatibility, integrated semaphore arbitration, and industrial temperature support in a single 84-pin PLCC - reducing BOM count and validation effort in retrofit and safety-critical applications.

Availability

7026L35G is available at Aetrix Electronics and suitable for industrial motion controllers, dual-core DSP co-processors, PLC backplane interconnects, and redundant safety controller memory requiring stable component supply across extended product lifecycles.

Supply support for 7026L35G 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 timing, memory, and interface solutions for communications, computing, and industrial markets.

The IDT7026 family was designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems - emphasizing hardware arbitration, byte-select flexibility, and industrial environmental resilience.

FAQ

What is the maximum operating temperature range for the 7026L35G?

The 7026L35G is rated for industrial temperature operation from -40°C to +85°C. This specification is validated per IDT's qualification standards and applies to all AC and DC electrical parameters in the datasheet. The 7026L35G maintains full 35 ns access timing and 1 mA standby current across this full range, making it suitable for enclosed industrial enclosures without forced air cooling.

Does the 7026L35G support true simultaneous read/write to the same memory location?

Yes - the 7026L35G implements true dual-port SRAM cells that allow concurrent access to the same address. When contention occurs, on-chip arbitration asserts BUSYL or BUSYR to stall the later-accessing port. The winning port completes its operation; the stalled port resumes after BUSY deasserts. This behavior is hardware-enforced and requires no software intervention.

How does the M/S pin affect BUSY pin functionality on the 7026L35G?

When M/S = HIGH, the 7026L35G operates as a master: BUSYL and BUSYR are push-pull outputs indicating arbitration status. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs that internally inhibit writes when driven LOW. In slave mode, external logic must drive BUSY pins to control write gating - no internal arbitration occurs.

Can the 7026L35G be used in a 32-bit memory system? If so, how?

Yes - the 7026L35G supports 32-bit expansion using MASTER/SLAVE cascading. One device is configured as master (M/S = HIGH), another as slave (M/S = LOW). The master's BUSY output connects to the slave's BUSY input. Address, CE, and R/W lines are shared; I/O buses combine to form a 32-bit data path. No external logic is required for arbitration or synchronization.

What is the purpose of the SEM pins on the 7026L35G, and how are they used?

The SEML and SEMR pins enable access to the 8 on-chip semaphore flags. When SEM = LOW and CE = HIGH, the device enters semaphore mode: A0–A2 select one of eight flags, and I/O0 writes the flag value while all I/O0–I/O15 read it. This provides hardware-managed mutual exclusion between processors without consuming RAM space or requiring atomic instructions - a key feature of the 7026L35G.