Renesas 7007L15PF

Overview

7007L15PF from IDT (Integrated Device Technology) is a high-speed 32K × 8 true dual-port static RAM with independent left/right ports, 15 ns maximum access time (commercial grade), 5 V ±10% single-supply operation, and on-chip semaphore/interrupt arbitration logic. It enables simultaneous asynchronous read/write access to the same memory location in embedded multiprocessing, DSP co-processor, and real-time communication buffer applications.

For engineers reviewing the 7007L15PF datasheet, 7007L15PF pinout, 7007L15PF application, or 7007L15PF equivalent, this device supports master/slave cascading for 16-bit+ data buses, provides push-pull BUSY/INT outputs, and delivers sub-1 mW standby power in full CMOS design - critical for deterministic inter-processor handshaking and low-power system-on-module designs.

Technical Context

The 7007L15PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port. Its on-chip arbitration logic resolves contention via BUSY flag assertion (M/S = H for master output; M/S = L for slave input) and supports semaphore signaling using A0–A2 addressing of eight dedicated flags.

It operates in two distinct access modes: RAM mode (CE = LOW, SEM = HIGH) and semaphore mode (CE = HIGH, SEM = LOW), with dedicated truth tables governing I/O behavior, interrupt set/clear at fixed addresses (7FFE_H/7FFF_H), and port-to-port timing dependencies including tBDD (BUSY disable to valid data) up to 30 ns.

Key Specifications

Pinout & Package

7007L15PF is housed in an 80-pin thin quad flatpack (TQFP) package with exposed thermal pad (IDT package code PNG80). All VCC pins require local 0.1 µF decoupling; all GND pins must be connected to solid ground plane for signal integrity and noise immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AC and R1EX24064ASAS-15, the 7007L15PF uniquely integrates master/slave arbitration, semaphore registers, and push-pull BUSY/INT in a compact 80-pin TQFP - reducing BOM count and PCB area while guaranteeing sub-15 ns deterministic access in tightly coupled multiprocessing systems.

Availability

7007L15PF is available at Aetrix Electronics and suitable for industrial PLC communication buffers, DSP-FPGA co-processing interfaces, and avionics display systems requiring stable component supply, long-term lifecycle support, and guaranteed commercial-grade timing performance.

Supply support for 7007L15PF 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 high-performance timing, memory, and interface solutions before its acquisition by Renesas Electronics in 2019. It pioneered industry-standard dual-port SRAM architectures for real-time embedded systems.

The 7007L15PF belongs to IDT's legacy 7000-series dual-port SRAM family, designed specifically for deterministic inter-processor communication in multiprocessing systems where hardware-enforced arbitration, low-latency access, and seamless 16-bit bus expansion were critical requirements.

FAQ

What is the maximum operating frequency supported by the 7007L15PF?

The 7007L15PF does not specify a clock frequency; it is an asynchronous SRAM. Its maximum sustained data rate is determined by the 15 ns access time (tAA), enabling read cycles every 15 ns - equivalent to a theoretical 66.7 MHz burst rate under ideal conditions. Actual system throughput depends on address/control setup/hold timing and bus protocol overhead.

Does the 7007L15PF support both master and slave configurations on the same PCB?

Yes - the 7007L15PF uses the M/S pin to configure each instance as master (BUSY output) or slave (BUSY input). Multiple 7007L15PF devices can be cascaded on one board: one master coordinates arbitration, while others operate as slaves, enabling scalable 16-bit or wider memory systems without external logic.

How is interrupt functionality implemented in the 7007L15PF?

The 7007L15PF implements hardware interrupts via dedicated mailbox addresses: writing to 7FFF_H on the left port asserts INTR (right port flag); writing to 7FFE_H on the right port asserts INTL (left port flag). Clearing is performed by reading the same address with OE enabled - all handled autonomously by on-chip logic without CPU intervention.

Can the 7007L15PF operate reliably at 4.5 V supply voltage?

Yes - the 7007L15PF is fully specified from 4.5 V to 5.5 V. At VCC = 4.5 V, DC parameters including VOL (≤0.4 V), VOH (≥2.4 V), and leakage currents remain within datasheet limits. AC timing degrades slightly (e.g., tAA increases to ≤18 ns), but the 15 ns rating applies strictly at VCC = 5.0 V ±5%.

What is the purpose of the SEM pin in the 7007L15PF?

The SEM (semaphore enable) pin selects between RAM mode (SEM = HIGH) and semaphore register mode (SEM = LOW). In semaphore mode, the 7007L15PF maps I/O0–I/O7 to eight dedicated hardware flags addressed by A0–A2 - enabling atomic test-and-set operations for resource locking between processors without software overhead or race conditions.