Renesas 7025L20JGI

Overview

IDT7025L20JGI from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with independent asynchronous left/right ports, 20 ns maximum read cycle time, 1 mA typical standby current, and industrial temperature range (–40°C to +85°C). It enables simultaneous access 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 IDT7025L20JGI datasheet, IDT7025L20JGI pinout, IDT7025L20JGI application, or IDT7025L20JGI equivalent, key selection considerations include dual-port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S = VIH, semaphore support for inter-processor synchronization, and 2V data retention capability in battery backup mode.

Technical Context

The IDT7025L20JGI implements full on-chip hardware semaphore logic with eight addressable flags (A0–A2), enabling atomic resource locking between independent processors or DMA engines. Its port arbitration resolves contention via BUSY assertion with tBDD ≤ 30 ns (M/S = VIH) and supports both address-match and chip-enable arbitration modes.

It operates fully asynchronously from either port with separate CE/R/W/OE/UB/LB controls per side, and integrates automatic power-down via TTL-level chip enable - entering 1 µA full-standby mode when both CEs are high and inputs are CMOS-leveled. The device uses standard 5V ±10% supply and retains data at VCC = 2V.

Key Specifications

Pinout & Package

Package: 84-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC, body size 29.21 mm × 29.21 mm × 4.32 mm, lead pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-20AXC and R1EX24016AS0I-20, the IDT7025L20JGI uniquely delivers integrated semaphores, 1 mA standby, and native 5 V operation - making it optimal for cost-sensitive, power-constrained industrial controllers requiring hardware-accelerated inter-processor coordination.

Availability

IDT7025L20JGI is available at Aetrix Electronics and suitable for real-time motion control, dual-processor communication, and industrial PLC buffering requiring stable component supply across extended product lifecycles.

Supply support for IDT7025L20JGI 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs before its acquisition by Renesas Electronics in 2019.

The IDT7025L20JGI belongs to the IDT7025 family of high-speed dual-port SRAMs designed specifically for deterministic, low-latency inter-processor communication in industrial automation, aerospace, and test equipment.

FAQ

What is the guaranteed maximum access time for IDT7025L20JGI?

The IDT7025L20JGI is rated for a maximum read cycle time (tRC) of 20 ns across the full industrial temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This value is production-tested and guaranteed - not a typical or characterization-only figure. The 20 ns specification applies to both ports under worst-case conditions including simultaneous CE and address transitions.

Does IDT7025L20JGI support true simultaneous read operations from both ports to the same address?

Yes, the IDT7025L20JGI implements true dual-port memory cells that allow concurrent reads from both left and right ports to identical addresses without contention or delay. This is a fundamental architectural feature - confirmed in the Functional Block Diagram and Truth Table I - and does not require BUSY flag monitoring or arbitration overhead for read-only access.

How does the M/S pin affect BUSY functionality in IDT7025L20JGI?

In IDT7025L20JGI, the M/S pin configures BUSY behavior: when M/S = HIGH, BUSYL/BUSYR are outputs used for master-side arbitration signaling; when M/S = LOW, they become inputs for slave-side BUSY reception. This enables hierarchical daisy-chaining of multiple devices without external logic - critical for expanding data bus width beyond 16 bits while preserving timing integrity.

What is the minimum supply voltage required to retain data in IDT7025L20JGI?

The IDT7025L20JGI guarantees data retention down to VCC = 2.0 V, as specified in Table 10 (Data Retention Characteristics). This is a tested parameter for the 'L' (low-power) version and enables direct integration with 2 V–3.6 V backup sources such as lithium thionyl chloride cells or supercapacitors without level-shifting circuitry.

Can IDT7025L20JGI be used in a single-port configuration?

Yes, IDT7025L20JGI can operate as a single-port SRAM by tying one port's CE permanently HIGH and disabling its R/W and OE controls. All timing and electrical specifications remain valid for the active port, and the unused port draws negligible current (ISB3 ≤ 0.2 mA). This flexibility allows reuse in legacy 16-bit bus designs without redesigning memory subsystems.