Renesas 7005S17PF8

Overview

7005S17PF8 from IDT is a high-speed 8K × 8 dual-port static RAM with true independent left/right ports, 17 ns maximum read cycle time (tRC), TTL-compatible 5 V ±10% supply, and integrated hardware semaphore/arbitration logic. It enables simultaneous asynchronous access to the same memory location and supports master/slave cascading for 16-bit+ bus expansion in real-time inter-processor communication systems.

For engineers reviewing the 7005S17PF8 datasheet, 7005S17PF8 pinout, 7005S17PF8 application, or 7005S17PF8 equivalent, key selection considerations include its 17 ns commercial-grade timing, 64-pin TQFP package, BUSY/INT semaphore signaling, dual-port arbitration behavior, and battery-backed data retention capability at 2 V.

Technical Context

The 7005S17PF8 implements fully asynchronous dual-port operation with separate address, control, and I/O buses for left (L) and right (R) ports. Its on-chip arbitration logic resolves contention via BUSY flag assertion (output in master mode, input in slave mode) and supports priority resolution through tAPS setup timing.

It integrates eight dedicated semaphore flags accessed via A0–A2 and I/O0–I/O7, with dedicated SEM enable pins per port. The device supports both CE-controlled and R/W-controlled write cycles, and includes automatic power-down when CE is high, reducing standby current to 10 mA (typ.) under TTL-level inputs.

Key Specifications

Pinout & Package

7005S17PF8 is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, requiring standard surface-mount reflow. Pin 1 is marked by a dot or notch; all VCC and GND pins must be decoupled locally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15AXC and IDT70V25L15PF, the 7005S17PF8 delivers optimal balance of 5 V compatibility, compact 64-pin TQFP packaging, and proven industrial reliability - making it the preferred choice for cost-sensitive, space-constrained 5 V dual-processor systems requiring deterministic memory access.

Availability

7005S17PF8 is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing buffering, and industrial PLC memory coherency requiring stable component supply across commercial temperature ranges.

Supply support for 7005S17PF8 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 timing, memory interface, RF, and high-performance silicon solutions for communications, computing, and industrial markets.

The 7005S17PF8 belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, low-latency memory sharing between independent processors or subsystems in mission-critical embedded systems.

FAQ

What is the maximum operating speed of the 7005S17PF8?

The 7005S17PF8 has a maximum read cycle time (tRC) of 17 ns, supporting up to approximately 58.8 MHz sustained memory access when both ports operate synchronously. This timing is guaranteed across the commercial temperature range (0°C to +70°C) with 5.0 V ±10% supply and specified load conditions. The 7005S17PF8 does not specify a clock frequency - its operation is fully asynchronous and governed by setup/hold and access timing parameters.

Does the 7005S17PF8 support battery backup operation?

Yes, the 7005S17PF8 supports battery backup operation with data retention down to 2 V (VDR), as confirmed in the DC Electrical Characteristics table. In data retention mode, ICCDR is specified at ≤4000 µA (max) for commercial grade, enabling extended hold time using small backup batteries or supercapacitors. The 7005S17PF8 retains valid data without refresh while VCC remains ≥2 V.

How does the M/S pin affect BUSY signal behavior on the 7005S17PF8?

When M/S = HIGH, the 7005S17PF8 operates as a master: BUSYL and BUSYR are push-pull outputs that assert LOW to indicate port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs used to receive BUSY signals from a master device, internally inhibiting writes when asserted LOW. This configuration enables hierarchical arbitration in multi-device systems.

Can the 7005S17PF8 perform simultaneous reads from both ports to the same memory address?

Yes, the 7005S17PF8 features true dual-port memory cells that allow completely independent, simultaneous reads from both left and right ports to the exact same memory location without contention, delay, or data corruption. This capability is intrinsic to its cell architecture and requires no arbitration or timing coordination - both outputs drive valid data concurrently within their respective tAA and tAOE timing windows.

What package type is used for the 7005S17PF8?

The 7005S17PF8 uses a 64-pin thin quad flatpack (TQFP) package, designated PNG64, with dimensions of 14 mm × 14 mm × 1.4 mm and 0.5 mm lead pitch. This RoHS-compliant, surface-mount package is optimized for automated assembly and provides thermal and electrical performance suitable for commercial-grade embedded applications.