Renesas 7026L25G

Overview

IDT7026L25G from Integrated Device Technology (IDT) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 25 ns maximum access time (commercial grade), 1 mW typical standby power, and full on-chip semaphore arbitration logic. It enables simultaneous asynchronous read/write to the same memory location in real-time embedded systems requiring deterministic inter-processor communication.

For engineers reviewing the IDT7026L25G datasheet, IDT7026L25G pinout, IDT7026L25G application, or IDT7026L25G equivalent, key selection criteria include port-to-port contention resolution timing (tBDD ≤ 30 ns), master/slave BUSY flag behavior (M/S pin configurable), byte-selectable I/O control (UBL/LBL), and industrial temperature support (–40°C to +85°C).

Technical Context

The IDT7026L25G implements fully asynchronous dual-port architecture with separate address, control, and data buses per port-no shared clock or synchronization required. Each port features independent chip enable (CEL/CER), read/write (R/WL/R/WR), output enable (OEL/OER), and upper/lower byte select (UBL/UBR, LBL/LBR) signals.

On-chip hardware semaphore logic uses A0–A2 addressing to manage eight shared flags via I/O0 write and all I/Os read; BUSY arbitration operates either by address match (tBAA ≤ 20 ns) or chip enable assertion (tBAC ≤ 20 ns), with push-pull BUSYL/BUSYR outputs in master mode and input-only behavior in slave mode (M/S = L).

Key Specifications

Pinout & Package

84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in. All VCC pins require local decoupling; 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 CY7C028V-25AXC and R1EX24016AS0C-25, the IDT7026L25G uniquely integrates on-chip semaphore registers and configurable BUSY arbitration - reducing BOM count by up to 3 discrete logic ICs and eliminating timing-critical software mutex paths in safety-critical systems.

Availability

IDT7026L25G is available at Aetrix Electronics and suitable for industrial automation, avionics data interfaces, medical imaging subsystems, and dual-core embedded computing requiring stable component supply and long-term manufacturability.

Supply support for IDT7026L25G 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

Integrated Device Technology (IDT), now part of Renesas Electronics, specializes in high-performance timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The IDT7026L25G belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic real-time inter-processor communication in systems demanding hardware-enforced memory coherency and minimal software intervention.

FAQ

What is the maximum operating temperature range for the IDT7026L25G?

The IDT7026L25G is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per manufacturer datasheet DSC 2939/17 and applies to all speed grades including the 25 ns version. The device uses CMOS process technology optimized for thermal stability across this full range without derating.

Does the IDT7026L25G support true simultaneous access to the same memory location?

Yes, the IDT7026L25G implements true dual-port static RAM cells that permit simultaneous read/write operations to identical addresses. When contention occurs, on-chip BUSY logic asserts BUSYL or BUSYR to stall the later-accessing port, ensuring deterministic resolution without data corruption - a core feature confirmed in Functional Block Diagram and Truth Table I.

How does the M/S pin affect BUSY pin functionality on the IDT7026L25G?

When M/S = H (high), the IDT7026L25G operates as a master: BUSYL and BUSYR are push-pull outputs indicating port contention. When M/S = L (low), it operates as a slave: BUSYL and BUSYR become inputs that internally inhibit writes when driven low - enabling hierarchical arbitration in multi-device arrays as described in Pin Configurations and Functional Description sections.

What is the standby current consumption of the IDT7026L25G?

The IDT7026L25G draws 1 mW typical standby power, corresponding to approximately 200 µA at 5 V (per DC Electrical Characteristics Table 8). This value is measured with both ports disabled (CEL = CER = VIH) and all inputs at TTL levels, and is significantly lower than the 5 mW typical of the IDT7026S variant.

Can the IDT7026L25G be used in a 32-bit data path configuration?

Yes, the IDT7026L25G supports 32-bit expansion using master/slave cascading. One device is configured as master (M/S = H) and another as slave (M/S = L); the master's BUSY output connects to the slave's BUSY input to coordinate access. This topology is explicitly documented in the Features section and Functional Block Diagram, enabling full-speed error-free 32-bit word systems without external logic.