Renesas 7025L15PFG

Overview

7025L15PFG from IDT (Integrated Device Technology) is a high-speed, low-power 8K × 16-bit true dual-port static RAM with 15 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and industrial temperature range (–40°C to +85°C). It supports simultaneous independent access from left and right ports, on-chip semaphore arbitration, and battery backup data retention at 2V - used in real-time embedded systems requiring deterministic memory coherency, such as radar signal processors and dual-CPU inter-processor communication buffers.

For engineers reviewing the 7025L15PFG datasheet, 7025L15PFG pinout, 7025L15PFG application, or 7025L15PFG equivalent, key selection considerations include its 15 ns access timing, 1 µA typical standby current (L-version), 84-pin PGA package with master/slave BUSY arbitration, and dual-port semaphore flag support for lock-free synchronization in multi-core control firmware.

Technical Context

The 7025L15PFG implements fully asynchronous dual-port architecture with separate address, control, and I/O 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 eight hardware semaphores are accessed via A0–A2 with dedicated SEM enable.

It features separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility, and supports cascaded 32-bit+ word expansion using Master/Slave select. Data retention at 2V is guaranteed for the L-version, with full CMOS-level standby modes achieving ≤0.2 mA typical ISB3 current.

Key Specifications

Pinout & Package

7025L15PFG is housed in an 84-pin ceramic Pin Grid Array (PLG84) package with 1.15″ × 1.15″ footprint and 0.17″ height, designed for high-reliability industrial and military applications. All VCC and GND pins require local decoupling; pin 1 is located at corner A1 (see top-view diagram).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1370D-133AXC and IDT70V25L15PF, the 7025L15PFG uniquely delivers integrated hardware semaphore arbitration and master/slave BUSY chaining in a ceramic PGA package - making it irreplaceable for legacy industrial control systems requiring drop-in mechanical and functional equivalence with proven field reliability.

Availability

7025L15PFG is available at Aetrix Electronics and suitable for radar signal processing, dual-CPU inter-processor communication, and industrial PLC I/O mapping requiring stable component supply across extended product lifecycles.

Supply support for 7025L15PFG 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 memory, timing, and interface solutions before its acquisition by Renesas Electronics in 2019.

The IDT7025 family was engineered for deterministic, low-latency dual-ported memory in real-time embedded systems - targeting aerospace, defense, and industrial automation where hardware-enforced coherency and data retention are non-negotiable.

FAQ

What is the maximum operating speed of the 7025L15PFG?

The 7025L15PFG guarantees a maximum read cycle time (tRC) of 15 ns across the industrial temperature range (–40°C to +85°C), corresponding to a theoretical peak throughput of 66.7 million cycles per second per port. This timing is validated under worst-case VCC = 4.5 V and TA = +85°C conditions, and applies to both RAM array and semaphore flag access when configured per datasheet AC test conditions.

Does the 7025L15PFG support battery backup operation?

Yes, the 7025L15PFG (L-version) supports data retention at VCC = 2.0 V minimum, with ICCDR ≤ 4000 µA across all temperature ranges. This allows the device to maintain stored data during main power failure when backed by a coin-cell or supercapacitor, and is verified per datasheet Table 10 - a feature absent in the S-version (IDT7025S).

How does the BUSY arbitration work between master and slave configurations of the 7025L15PFG?

When M/S = H, the 7025L15PFG operates as a Master: BUSYL/BUSYR become open-collector outputs that assert low during port contention (e.g., simultaneous write to same address). When M/S = L, it operates as a Slave: BUSYL/BUSYR become inputs monitored by the Master to gate writes. This hardware handshake eliminates race conditions without software polling or external logic.

What package type is used for the 7025L15PFG, and is it RoHS-compliant?

The 7025L15PFG uses an 84-pin ceramic Pin Grid Array (PLG84) package with hermetic sealing and 1.15″ × 1.15″ footprint. Per IDT documentation, this variant is not RoHS-compliant due to leaded solder in the ceramic PGA construction; RoHS alternatives like the 100-pin TQFP IDT70V25L15PF require PCB redesign and lack identical thermal/mounting characteristics.

Can the 7025L15PFG be used in a 32-bit data path configuration?

Yes - the 7025L15PFG supports 32-bit expansion via Master/Slave cascading: one device configured as Master (M/S = H) drives BUSY outputs to BUSY inputs of one or more Slaves (M/S = L), enabling synchronized 32-bit-wide access without external glue logic. The datasheet confirms full-speed error-free operation in this topology, leveraging native CE, R/W, and byte-enable coordination across devices.