Renesas 70V27S15PF8

Overview

70V27S15PF8 from Integrated Device Technology is a high-speed 3.3V 32K × 16 dual-port static RAM with true dual-ported architecture enabling simultaneous read/write access to the same memory location, 15 ns maximum access time (commercial grade), 500 mW typical active power, and 100-pin TQFP package. It serves as a stand-alone 512 Kbit memory or master/slave pair in 32-bit bus expansion systems for real-time interprocessor communication.

For engineers reviewing the 70V27S15PF8 datasheet, 70V27S15PF8 pinout, 70V27S15PF8 application, or 70V27S15PF8 equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial temperature support (−40°C to +85°C), exact dual-port arbitration behavior, and two documented alternative parts for system-level design continuity.

Technical Context

The 70V27S15PF8 implements fully asynchronous dual-port operation with independent left/right address, control, and I/O buses - no shared timing constraints between ports. Its on-chip arbitration logic resolves contention via BUSY flag assertion based on address match or chip enable timing, with priority set-up time (tAPS) of 5 ns.

It supports semaphore signaling across ports using dedicated SEM pins and A0–A2-addressed flags, enabling hardware-coordinated resource sharing. The device uses LVTTL-compatible inputs and outputs, operates from a single 3.3 V ±0.3 V supply, and features separate upper-byte (UB) and lower-byte (LB) enables for flexible bus-width matching.

Key Specifications

Pinout & Package

70V27S15PF8 is housed in a 100-pin TQFP (PN100-1) with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. All VDD pins require connection to 3.3 V; all VSS pins must be grounded.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C33256PFS-15TIN, the 70V27S15PF8 uniquely delivers industrial temperature support, configurable master/slave arbitration via M/S pin, and full hardware semaphore implementation - making it irreplaceable in safety-critical or thermally demanding dual-processor systems.

Availability

70V27S15PF8 is available at Aetrix Electronics and suitable for real-time interprocessor communication, digital signal processing buffering, and industrial PLC memory coherency requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V27S15PF8 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The IDT70V27S series was engineered specifically for deterministic, low-latency inter-processor communication in embedded control systems - emphasizing hardware arbitration, semaphore support, and industrial-grade reliability.

FAQ

What is the operating temperature range supported by the 70V27S15PF8?

The 70V27S15PF8 is qualified for industrial temperature operation from −40°C to +85°C, as confirmed in the datasheet's "Recommended DC Operating Conditions" table (Section 5) and explicitly stated in the device description on page 2. This rating applies to all speed grades including the 15 ns version.

Does the 70V27S15PF8 support true simultaneous read/write to the same memory address?

Yes - the 70V27S15PF8 implements true dual-ported memory cells, allowing independent, concurrent read and write operations to identical addresses on left and right ports without data corruption, as specified in the "Features" section (page 1) and functional block diagram (page 2).

How does the M/S pin affect BUSY signal behavior on the 70V27S15PF8?

When M/S = VIH, the 70V27S15PF8 operates as a master: BUSYL and BUSYR are push-pull outputs asserting during arbitration. When M/S = VIL, it operates as a slave: BUSYL and BUSYR become inputs that inhibit writes when driven LOW, per Note 1 on page 3 and Truth Table V (page 17).

What is the standby power consumption of the 70V27S15PF8?

The 70V27S15PF8 (S-suffix variant) consumes 3.3 mW typical standby power, measured with both ports deselected (CE0/CE1 = VIH) and all inputs at TTL levels, as documented in the "Features" section (page 1) and DC Electrical Characteristics table (Section 6, ISB1 row).

Can the 70V27S15PF8 be used in a 32-bit data bus configuration?

Yes - the 70V27S15PF8 supports 32-bit expansion via master/slave cascading using the M/S pin and BUSY flag handshaking, as described in the "Features" section (page 1) and detailed in the functional description (page 2). No external logic is required for depth or width expansion.