Renesas 7025S17PF

Overview

7025S17PF from IDT (Integrated Device Technology) is a high-speed 8K × 16-bit true dual-port static RAM with independent left/right ports, 17 ns maximum read cycle time (commercial grade), TTL-compatible 5V ±10% operation, and on-chip semaphore arbitration logic. It enables simultaneous asynchronous access to the same memory location and supports MASTER/SLAVE cascading for 32-bit+ bus expansion in real-time embedded control systems.

For engineers reviewing the 7025S17PF datasheet, 7025S17PF pinout, 7025S17PF application, or 7025S17PF equivalent, this page delivers verified timing specs (tRC = 17 ns), power metrics (750 mW active, 5 mW standby), dual-port arbitration behavior, BUSY/INT flag operation, and exact 84-pin PGA package mapping - all confirmed from IDT DSC 2683/13 (Oct 2019).

Technical Context

The 7025S17PF implements fully asynchronous dual-port architecture with separate address, data, and control buses per port, enabling concurrent read/write operations without external logic. Its on-chip arbitration logic resolves contention via BUSY flag assertion (M/S = H) or BUSY input (M/S = L), and supports eight hardware semaphores addressed by A0–A2 for inter-processor synchronization.

It features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, full TTL-level I/O, and battery backup data retention at 2V (L-version only). The device operates across commercial temperature range (0°C to +70°C) and uses CMOS high-performance fabrication for low-power, high-reliability operation.

Key Specifications

Pinout & Package

7025S17PF is packaged in an 84-pin ceramic Pin Grid Array (PGA), PLG84 package, with 4 corner ground pins, dual VCC rails (pins 13, 26, 46, 72), and mirrored left/right port signal groups. Pin 1 is located at top-left per standard PGA orientation (index mark adjacent to pin 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1370D-167AXC and AS7C3256A-15JC, the 7025S17PF uniquely delivers true asynchronous dual-port operation with integrated BUSY/INT/SEM in a 5V, 84-pin PGA package - making it irreplaceable for legacy real-time control systems requiring zero-latency inter-processor communication without clock trees or glue logic.

Availability

7025S17PF is available at Aetrix Electronics and suitable for industrial motion controllers, avionics display processors, and telecom line cards requiring stable component supply, long-term obsolescence mitigation, and guaranteed traceable sourcing.

Supply support for 7025S17PF 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 computing solutions, now part of Renesas Electronics.

The 7025S17PF belongs to IDT's legacy high-speed dual-port SRAM product line, designed specifically for real-time embedded systems demanding deterministic, low-latency inter-processor communication without external arbitration logic.

FAQ

What is the maximum operating speed of the 7025S17PF?

The 7025S17PF has a maximum read cycle time (tRC) of 17 ns, corresponding to a theoretical maximum throughput of approximately 58.8 MHz for consecutive read operations on a single port. This speed is guaranteed across the commercial temperature range (0°C to +70°C) with 5.0 V ±10% supply, and reflects worst-case timing under full-load AC test conditions per IDT DSC 2683/13.

Does the 7025S17PF support battery backup operation?

The 7025S17PF does not support battery backup data retention. Only the 'L' variant (e.g., 7025L17PF) guarantees 2V data retention per IDT specification. The 'S' suffix denotes standard power version with 5 mW typical standby current but no low-voltage retention capability - critical for systems requiring persistent memory during main power loss.

How does the BUSY signal function in MASTER/SLAVE configuration with the 7025S17PF?

When M/S = H (Master), BUSY is an output that asserts when the opposite port attempts access to the same address, blocking further writes until cleared. When M/S = L (Slave), BUSY is an input that must be monitored before initiating a write; the 7025S17PF will not execute the write until BUSY goes low. This hardware-enforced protocol prevents data corruption without software intervention.

Can the 7025S17PF be used in a 32-bit data bus system?

Yes - the 7025S17PF supports 32-bit expansion via MASTER/SLAVE cascading. Two devices can be configured with one as Master (M/S = H) and the other as Slave (M/S = L), using BUSY chaining and shared address/control lines. IDT documentation confirms this configuration enables full-speed, error-free 32-bit operation without additional discrete logic or timing penalties.

What package type is used for the 7025S17PF?

The 7025S17PF uses an 84-pin ceramic Pin Grid Array (PGA) package, designated PLG84. Its body dimensions are approximately 1.15 in × 1.15 in × 0.17 in, with four dedicated ground pins (pins 11, 25, 54, 75) and dual VCC rails (pins 13, 26, 46, 72) for noise isolation - a robust choice for high-reliability industrial and aerospace applications.