Renesas 7026L20JGI

Overview

IDT7026L20JGI from IDT (now part of Renesas Electronics) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 20 ns maximum access time, industrial temperature range (–40°C to +85°C), and 5 V ±10% single-supply operation. It enables simultaneous asynchronous read/write to the same memory location and supports master/slave cascading for 32-bit+ bus expansion in real-time embedded control systems.

For engineers reviewing the IDT7026L20JGI datasheet, IDT7026L20JGI pinout, IDT7026L20JGI application, or IDT7026L20JGI equivalent, key selection considerations include BUSY arbitration timing (tBAA ≤ 20 ns), low standby current (1 mW typ.), on-chip semaphore logic, and compatibility with TTL-level control signals in deterministic multi-processor interconnects.

Technical Context

The IDT7026L20JGI implements fully asynchronous dual-port architecture with separate address, data, and control buses per port (A0L–A13L/I/O0L–I/O15L/R/WL/CEL/UBL/LBL/SEML/BUSYL and mirrored right-side signals). Port arbitration is hardware-based using chip-enable and address-match detection - not software-managed - and operates independently of read/write direction.

It integrates on-chip semaphore logic (8 flags, addressed via A0–A2) with dedicated SEM pins and supports both master mode (BUSY as push-pull output) and slave mode (BUSY as write-inhibit input). The M/S pin selects mode, enabling deterministic contention resolution without external logic in tightly coupled dual-CPU systems.

Key Specifications

Pinout & Package

Package: 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in, lead finish SnPb. Pin 1 index located at corner near notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362AV25 and R1EX24016AS0C, IDT7026L20JGI uniquely delivers 5 V–compatible, 20 ns true dual-port operation with integrated BUSY arbitration and semaphore logic - essential for hard real-time, multi-processor deterministic memory sharing where pin count, voltage, and sub-20 ns latency are non-negotiable.

Availability

IDT7026L20JGI is available at Aetrix Electronics and suitable for industrial automation controllers, avionics data recorders, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7026L20JGI 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), now part of Renesas Electronics, is a semiconductor company specializing in timing, memory, and interface solutions for high-performance computing and communications infrastructure.

IDT7026L20JGI belongs to the 7000-series dual-port SRAM family, designed specifically for deterministic, low-latency inter-processor communication in mission-critical embedded systems where hardware arbitration and industrial temperature reliability are mandatory.

FAQ

What is the maximum operating temperature range for IDT7026L20JGI?

IDT7026L20JGI is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the manufacturer's qualification testing and applies to all DC and AC specifications in the datasheet, including 20 ns access time and 1 mW standby power. Operation outside this range may result in parametric failure or reduced reliability.

Does IDT7026L20JGI support true simultaneous read/write to the same memory address?

Yes, IDT7026L20JGI uses true dual-port SRAM cells that permit concurrent read and write operations to the identical memory location. When contention occurs, hardware BUSY arbitration asserts BUSYL or BUSYR within ≤20 ns (tBAA) to stall the later access - ensuring data coherency without external logic or software intervention.

How does the M/S pin affect BUSY functionality on IDT7026L20JGI?

When M/S = H, IDT7026L20JGI operates as a master: BUSYL and BUSYR are push-pull outputs indicating port contention. When M/S = L, it operates as a slave: BUSYL and BUSYR become TTL-compatible inputs that internally gate write operations - enabling hierarchical BUSY chaining in multi-device arrays without external gates.

What is the standby power consumption of IDT7026L20JGI?

IDT7026L20JGI draws 1 mW typical standby power (ISB3, both ports fully disabled with CMOS-level inputs). This is achieved when CEL = CER = VIH, SEML = SEMR > VCC – 0.2 V, and all address/data lines held static at valid logic levels - making it suitable for battery-backed or energy-sensitive industrial systems.

Can IDT7026L20JGI be used in a 32-bit data bus configuration?

Yes, IDT7026L20JGI supports 32-bit expansion via master/slave cascading. Two devices are connected with M/S = H on the master and M/S = L on the slave; BUSY outputs from the master feed BUSY inputs on the slave, and the M/S pin configures correct arbitration behavior - enabling full-speed 32-bit word access without discrete glue logic.