Renesas 7037L20PFI

Overview

IDT7037L20PFI from Integrated Device Technology is a high-speed 32K × 18 true dual-ported static RAM with independent left/right ports, 20 ns maximum access time (commercial grade), TTL-compatible 5 V ±10% supply, and integrated hardware semaphore/arbiter logic for interprocessor synchronization. It enables simultaneous read/write to the same memory location in master/slave configurations and supports depth expansion without external logic in high-throughput embedded control systems.

For engineers reviewing the IDT7037L20PFI datasheet, IDT7037L20PFI pinout, IDT7037L20PFI application, or IDT7037L20PFI equivalent, key selection criteria include dual-port arbitration timing (tBDD ≤ 17 ns), BUSY flag behavior (push-pull, M/S-configurable), semaphore address mapping (A0–A2), and 100-pin TQFP package compatibility with industrial-grade thermal range support.

Technical Context

The IDT7037L20PFI implements fully asynchronous dual-port operation with separate CE0/CE1, R/W, OE, UB/LB, and SEM controls per port. Its on-chip arbitration logic resolves contention via BUSY assertion (tBAA ≤ 20 ns) when address matches occur, while semaphore latches (8 flags, addressed by A0–A2) operate independently of the 576 Kbit RAM array using dedicated CE=VIH/SEM=VIL access mode.

It features two distinct power-down modes: TTL-level standby (ISB1 ≤ 75 mA) and full CMOS standby (ISB3 ≤ 3.0 mA), both controlled by chip enable thresholds. The M/S pin configures BUSYL/BUSYR as push-pull outputs (master) or write-inhibit inputs (slave), eliminating need for external pull-ups and enabling flexible interlock topologies.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. Pin 1 index corner marked; NC pins present at positions 99–100 (I/O16R/I/O17R) and 76–77 (I/O17L/I/O16L).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-ported memory applications.

Compared with CY7C028V-20JC and NB7L20PFI, the IDT7037L20PFI uniquely integrates hardware semaphore and BUSY arbitration in a 5 V-compatible 100-pin TQFP, delivering deterministic interprocessor coordination without external components or voltage translation.

Availability

IDT7037L20PFI is available at Aetrix Electronics and suitable for real-time industrial PLCs, multi-core DSP communication buffers, and avionics data concentrators requiring stable component supply across extended product lifecycles.

Supply support for IDT7037L20PFI 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning ICs for high-performance computing and communications infrastructure.

The IDT7037L product line delivers high-speed dual-ported SRAMs with integrated arbitration and semaphore logic specifically designed for deterministic interprocessor communication in real-time embedded systems.

FAQ

What is the maximum operating temperature range certified for IDT7037L20PFI?

IDT7037L20PFI is specified for industrial temperature operation from –40°C to +85°C, as confirmed in the datasheet's "Recommended DC Operating Conditions" table and ordering information notes. This rating applies to the PFI suffix variant and is validated across all AC/DC electrical parameters in the specification.

How does the M/S pin affect BUSY pin functionality in IDT7037L20PFI?

In IDT7037L20PFI, the M/S pin configures BUSYL and BUSYR as push-pull outputs when tied high (master mode), providing active arbitration signals. When tied low (slave mode), they become write-inhibit inputs that block writes when driven low externally-enabling hierarchical arbitration in multi-device systems without additional logic.

Can IDT7037L20PFI perform simultaneous reads from both ports to the same memory address?

Yes, IDT7037L20PFI supports true simultaneous reads to identical addresses on left and right ports without conflict, timing penalty, or data corruption. This capability is inherent to its true dual-ported SRAM cell architecture and is explicitly stated in the "Features" section of the datasheet.

What are the valid address ranges for interrupt mailbox functionality in IDT7037L20PFI?

IDT7037L20PFI uses fixed interrupt mailbox addresses: left port INTL is set by right-port write to 7FFEh and cleared by left-port read of 7FFEh; right port INTR is set by left-port write to 7FFFh and cleared by right-port read of 7FFFh-both require proper CE/OE/R/W levels per Truth Table IV.

Is IDT7037L20PFI compatible with 3.3 V logic interfaces?

IDT7037L20PFI requires a 5.0 V ±10% supply and is TTL-compatible, with VIH = 2.2 V min and VIL = 0.8 V max. Direct connection to 3.3 V logic is not supported; level-shifting circuitry is required for interfacing with 3.3 V controllers or FPGAs.