Renesas 7005L20JGI

Overview

7005L20JGI from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 20 ns maximum read cycle time (tRC), 1 mW typical standby power, and industrial temperature range (−40°C to +85°C). It supports simultaneous asynchronous access, on-chip semaphore arbitration, and master/slave cascading for 16-bit+ memory systems in real-time embedded controllers.

For engineers reviewing the 7005L20JGI datasheet, 7005L20JGI pinout, 7005L20JGI application, or 7005L20JGI equivalent, key selection considerations include BUSY-flag arbitration timing (tBDD ≤ 30 ns), dual-port data retention at 2 V, TTL-compatible 5 V ±10% supply, and TQFP-64 package compatibility with legacy IDT7005 designs.

Technical Context

The 7005L20JGI implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion (push-pull output) or BUSY input (slave mode), controlled by the M/S pin. Semaphore signaling uses dedicated SEM pins and A0–A2 to access eight hardware flags.

It features automatic power-down via CE-driven standby modes: ISB1 = 10 mA (both ports TTL-level standby), ISB3 = 0.2 mA (full CMOS-level standby), and battery backup retention at VCC = 2 V with ICCDR ≤ 4 µA (typical). All timing parameters-including tAA, tACE, tAOE-are guaranteed at 20 ns max for industrial-grade operation.

Key Specifications

Pinout & Package

7005L20JGI is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad. Pin functions are electrically isolated between left (L) and right (R) ports, with dedicated control, address, and bidirectional I/O terminals per side.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-20VXI and AS7C38098B-20TIN, the 7005L20JGI uniquely integrates semaphore arbitration, 2 V data retention, and 5 V TTL compatibility in a drop-in TQFP-64 package - making it optimal for industrial and avionics systems requiring deterministic inter-processor communication under voltage stress.

Availability

7005L20JGI is available at Aetrix Electronics and suitable for industrial motion control, avionics data concentrators, dual-core DSP co-processors, and medical imaging frame buffers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 7005L20JGI 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, now part of Renesas Electronics.

The IDT7005 product line delivers true dual-port SRAMs optimized for real-time inter-processor communication, featuring integrated arbitration, semaphore logic, and industrial/military temperature variants - designed specifically for embedded control, test equipment, and communications infrastructure.

FAQ

What is the guaranteed maximum access time for 7005L20JGI under industrial conditions?

The 7005L20JGI guarantees a maximum read cycle time (tRC) of 20 ns over the full industrial temperature range (−40°C to +85°C) and 5.0 V ±10% supply. This includes all AC parameters - tAA, tACE, and tAOE - also rated at 20 ns max, ensuring deterministic timing for real-time systems. The 7005L20JGI datasheet specifies these values in Table 13a for the "7005X20" speed grade.

Does 7005L20JGI support battery backup operation, and what is the minimum retention voltage?

Yes, the 7005L20JGI supports battery backup operation with guaranteed data retention down to 2.0 V (VDR), as specified in Table 9. At VCC = 2 V and TA = +25°C, typical data retention current (ICCDR) is 100 µA, with a maximum of 4000 µA across military/industrial grades. This enables fail-safe state storage during main power loss without external circuitry.

How does the M/S pin configure master versus slave operation in 7005L20JGI?

When M/S = HIGH, the 7005L20JGI operates as a master: BUSYL and BUSYR become push-pull outputs that assert LOW to block writes during contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs that must be driven externally (e.g., by a master's BUSY output) to inhibit local writes. This configuration enables scalable multi-device memory expansion without glue logic.

Can both ports of 7005L20JGI perform simultaneous reads to the same memory address?

Yes, the 7005L20JGI uses true dual-port memory cells that allow completely independent, simultaneous reads from the same address location on left and right ports - with no timing penalty or arbitration delay. This capability is explicitly stated in the Features section and verified by the "Non-Contention Read/Write Control" truth table (Table 2), where CE = L, R/W = H, OE = L on both ports yields concurrent DATAOUT.

What package type and dimensions does 7005L20JGI use, and is it RoHS-compliant?

The 7005L20JGI uses a 64-pin thin quad flatpack (TQFP) package designated PNG64, with body dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. Per IDT documentation, "Green parts available" indicates RoHS-compliant construction with lead-free terminations and halogen-free molding compound - confirmed by the "JGI" suffix in the part number per IDT's ordering guide.