Renesas 7005L15PFI

Overview

IDT7005L15PFI from Integrated Device Technology (IDT) is a high-speed 8K × 8 dual-port static RAM with true independent left/right port access, 15 ns maximum read cycle time (tRC), industrial temperature range (–40°C to +85°C), and low-power active/standby operation (700 mW typ. / 1 mW typ.). It serves as a stand-alone 64 Kbit memory or master/slave pair in 16-bit+ bus systems for real-time inter-processor communication.

For engineers reviewing the IDT7005L15PFI datasheet, IDT7005L15PFI pinout, IDT7005L15PFI application, or IDT7005L15PFI equivalent, key selection criteria include simultaneous dual-port arbitration timing (tAPS = 5 ns), BUSY flag behavior under M/S configuration, semaphore flag support (8 flags via A0–A2), and TQFP-64 package compatibility with 5 V ±10% supply and TTL-level I/O.

Technical Context

The IDT7005L15PFI implements fully asynchronous dual-port architecture with separate address, control, and bidirectional data buses per port (A0L–A12L/I/O0L–I/O7L and A0R–A12R/I/O0R–I/O7R). On-chip arbitration logic resolves contention using either chip-enable (CE)-based or address-match-based priority detection, with tAPS = 5 ns setup time ensuring deterministic port dominance.

It integrates full hardware semaphore signaling (SEML/SEMR), interrupt flag generation (INTL/INTR), and BUSY flag management (BUSYL/BUSYR) - all operating without external logic. The device supports battery backup data retention at VCC = 2 V with ICCDR ≤ 4000 µA (military/industrial grade), and features push-pull BUSY/INT outputs (non-tri-stated).

Key Specifications

Pinout & Package

64-pin thin quad flatpack (TQFP) package with 0.5 mm pitch; body dimensions 14 mm × 14 mm × 1.4 mm. All VCC pins require decoupling; all GND pins must be connected to system ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and IDT70V25L15PF, the IDT7005L15PFI uniquely delivers 5 V TTL compatibility, industrial temperature rating, and battery-retention capability in a 64-pin footprint - making it optimal for legacy 5 V embedded systems requiring robust dual-port memory without redesign.

Availability

IDT7005L15PFI is available at Aetrix Electronics and suitable for industrial PLCs, aerospace avionics data hubs, and medical imaging frame buffers requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for IDT7005L15PFI 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions before its acquisition by Renesas Electronics in 2019.

The IDT7005L15PFI belongs to IDT's high-speed dual-port SRAM product line, designed specifically for real-time inter-processor communication, industrial control buffering, and safety-critical shared-memory architectures.

FAQ

What is the maximum operating frequency supported by the IDT7005L15PFI?

The IDT7005L15PFI has a 15 ns maximum read cycle time (tRC), enabling up to 66.7 MHz sustained access per port. This is not a clocked device - operation is fully asynchronous, so actual throughput depends on address/control setup/hold timing and bus protocol, not a fixed clock frequency. The IDT7005L15PFI achieves this performance while maintaining true dual-port concurrency and hardware arbitration.

Does the IDT7005L15PFI support battery backup operation, and what is the minimum retention voltage?

Yes, the IDT7005L15PFI supports battery backup data retention down to VCC = 2.0 V, as specified in Table 9 (VDR = 2.0 V min). In this mode, ICCDR is guaranteed ≤ 4000 µA for industrial/military grades. The IDT7005L15PFI maintains valid data without external circuitry, making it suitable for brown-out protection and uninterruptible memory applications.

How does the M/S pin configure master vs. slave operation in the IDT7005L15PFI?

When M/S = H, BUSYL and BUSYR are push-pull outputs indicating port contention; when M/S = L, they become inputs that inhibit writes on the receiving port. This allows cascading multiple IDT7005L15PFI devices - one master arbitrates, slaves respond - enabling 16-bit+ word systems without external logic. The IDT7005L15PFI uses this pin to switch BUSY signal directionality, not functionality.

Can the IDT7005L15PFI perform simultaneous read operations on both ports to the same memory address?

Yes, the IDT7005L15PFI features true dual-port memory cells that allow concurrent reads from both left and right ports to identical addresses with no timing penalty or data corruption. This capability is intrinsic to the cell design - no arbitration delay or BUSY assertion occurs during same-address reads, unlike write-read contention scenarios. The IDT7005L15PFI guarantees this behavior across its full temperature and voltage range.

What are the key timing parameters for semaphore flag access on the IDT7005L15PFI?

Semaphore access requires CE = VIH and SEM = VIL. Key timing includes tSAA (semaphore address access time) ≤ 15 ns and tSOP (semaphore update pulse width) ≥ 10 ns. Eight flags are addressed via A0–A2; reading returns flag state on I/O0–I/O7, writing loads I/O0 into the selected flag. The IDT7005L15PFI ensures atomic flag updates without software intervention, critical for lock-free inter-processor synchronization.