Renesas 7037L15PF

Overview

IDT7037L15PF from Integrated Device Technology is a high-speed 32K × 18 true dual-ported static RAM with independent left/right ports, 15 ns max access time (commercial grade), TTL-compatible 5V ±10% supply, and integrated hardware semaphore logic for inter-processor coordination in real-time embedded systems.

For engineers reviewing the IDT7037L15PF datasheet, IDT7037L15PF pinout, IDT7037L15PF application, or IDT7037L15PF equivalent, this page delivers verified timing specs, master/slave arbitration behavior, BUSY/INT signal semantics, byte-select control, and dual-port contention resolution - all critical for deterministic multi-CPU memory sharing designs.

Technical Context

The IDT7037L15PF implements fully asynchronous dual-port operation with separate address, data, and control buses per port. Its on-chip arbitration logic resolves simultaneous accesses to identical addresses via push-pull BUSY flags, while dedicated SEM pins enable hardware semaphore flag access at A0–A2 using I/O0 as write input and all I/Os as read outputs.

It supports three operational modes: standalone 576K-bit dual-port RAM, master/slave cascaded configuration for ≥36-bit word systems, and semaphore-controlled resource locking. The M/S pin configures BUSY as output (master) or input (slave), and CE0/CE1 enable per-port power-down to 0.2 mA full standby current.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flatpack (TQFP), 14 mm × 14 mm × 1.4 mm body, lead-free (green) option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1371D-15ZXC and IS61WV3218-15K, the IDT7037L15PF uniquely integrates BUSY arbitration, semaphore registers, and interrupt mailboxes in a 5 V TTL-compatible package - delivering out-of-box deterministic multi-CPU memory sharing without external glue logic.

Availability

IDT7037L15PF is available at Aetrix Electronics and suitable for real-time multi-processor communication, industrial PLC memory coherency, and avionics data concentrator buffer applications requiring stable component supply, long-lifecycle support, and guaranteed commercial-grade timing performance.

Supply support for IDT7037L15PF 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and real-time interconnect solutions for communications and computing markets.

The IDT7037L15PF belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between heterogeneous processors in embedded control, test equipment, and aerospace systems.

FAQ

What is the maximum operating frequency supported by the IDT7037L15PF?

The IDT7037L15PF does not specify a maximum clock frequency because it is an asynchronous SRAM. Its timing is governed by access parameters: tRC (read cycle time) is 15 ns max, enabling effective operation up to approximately 66.7 MHz in tightly controlled systems. Actual throughput depends on address/control setup/hold times and bus protocol - not a fixed clock domain.

How does the BUSY arbitration work when both ports access the same address simultaneously on the IDT7037L15PF?

When both ports assert valid addresses matching within one cycle, the IDT7037L15PF asserts BUSYL or BUSYR (depending on port timing alignment and tAPS compliance) to stall the later access. Writes to the stalled port are internally gated - no data corruption occurs. The BUSY signal remains active until the first port completes its cycle, then releases automatically.

Can the IDT7037L15PF be used in a 36-bit or wider memory system?

Yes - the IDT7037L15PF supports master/slave cascading via the M/S pin and dual CE enables. Two IDT7037L15PF devices can be configured as master and slave to form a 32K × 36-bit memory without external logic, maintaining full-speed operation and synchronized arbitration across both devices.

What is the function of the SEM pin on the IDT7037L15PF, and how is it used with semaphore flags?

The SEM pin on the IDT7037L15PF selects between RAM access (SEM = VIH) and semaphore register access (SEM = VIL). When SEM = VIL, the eight semaphore flags are addressed by A0–A2, written via I/O0, and read across all 18 I/O lines - enabling atomic resource locking without CPU intervention or bus cycles wasted on polling.

Is the IDT7037L15PF pin-compatible with other speed grades in the IDT7037L family?

Yes - the IDT7037L15PF shares identical pinout, package (100-pin TQFP), and functional signal mapping with IDT7037L20PF and IDT7037L25PF. Only timing parameters differ: tAA/tRC are 15 ns, 20 ns, and 25 ns respectively. System designs can scale performance via speed grade substitution without PCB revision.