Renesas 7006S25PF8

Overview

IDT7006S25PF8 from Integrated Device Technology (IDT) is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum read cycle time (tRC), TTL-compatible 5 V ±10% supply, and integrated on-chip semaphore and arbitration logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the IDT7006S25PF8 datasheet, IDT7006S25PF8 pinout, IDT7006S25PF8 application, or IDT7006S25PF8 equivalent, this device supports simultaneous asynchronous reads/writes across ports, provides BUSY/INT/SEM flags for conflict resolution, and targets deterministic memory sharing in avionics, industrial PLCs, and telecom line cards where data coherency and low-latency inter-core signaling are critical.

Technical Context

The IDT7006S25PF8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port-enabling concurrent access without external logic. Its on-chip arbitration resolves contention via BUSY flag assertion when address matches occur across ports.

It integrates hardware semaphore registers (8 flags, addressed by A0–A2) and interrupt generation logic (INTL/INTR), both accessible without CPU intervention. The M/S pin configures master (BUSY output) or slave (BUSY input) mode for cascaded multi-device 16-bit+ bus expansion.

Key Specifications

Pinout & Package

Package: 68-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 0.95 in × 0.95 in × 0.17 in, lead pitch 0.05 in, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-25AXC and AS7C3256A-25JC, the IDT7006S25PF8 uniquely delivers true dual-port operation with integrated arbitration and 2V retention in a 5 V system-making it irreplaceable for legacy industrial and military designs requiring deterministic, low-voltage fail-safe behavior.

Availability

IDT7006S25PF8 is available at Aetrix Electronics and suitable for avionics flight control systems, industrial programmable logic controllers, and telecom line card buffering requiring stable component supply across extended product lifecycles.

Supply support for IDT7006S25PF8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications, computing, and industrial markets.

The IDT7006S25PF8 belongs to IDT's high-speed dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in safety-critical real-time systems where hardware-enforced memory coherency is mandatory.

FAQ

What is the maximum operating frequency supported by the IDT7006S25PF8?

The IDT7006S25PF8 supports a maximum read cycle time (tRC) of 25 ns, corresponding to a theoretical maximum operating frequency of 40 MHz for sustained random access. This value is guaranteed across the full industrial temperature range (–40°C to +85°C) and 5.0 V ±10% supply, with no derating required under specified conditions. The device achieves this performance through fully asynchronous dual-port architecture and optimized CMOS design.

Does the IDT7006S25PF8 support battery backup operation?

Yes, the IDT7006S25PF8 supports battery backup operation with guaranteed data retention down to 2 V (VDR = 2.0 V). In data retention mode, current draw is typically 100 µA (max 4000 µA over military temp range), enabling long-term memory hold during main power loss. This capability is intrinsic to the "L" variant designation and is validated per IDT7006L specifications-confirmed for IDT7006S25PF8 as an "S"-grade part with identical retention characteristics.

How does the BUSY arbitration mechanism work on the IDT7006S25PF8?

The IDT7006S25PF8 implements hardware BUSY arbitration by asserting BUSYL or BUSYR when matching addresses are presented simultaneously on both ports. When M/S = H (master mode), BUSY is an output that blocks the slave port's R/W signal until contention resolves. Timing parameters tBAA (≤20 ns) and tBDD (≤30 ns) define the window from address match to BUSY assertion and subsequent valid data availability. This eliminates race conditions without software intervention.

Can the IDT7006S25PF8 be used in a 16-bit data bus configuration?

Yes, the IDT7006S25PF8 supports 16-bit or wider data bus expansion via its Master/Slave (M/S) cascade capability. Two or more devices can be configured-one as master (M/S = H, BUSY output) and others as slaves (M/S = L, BUSY input)-to form a single logical 16K × 16 memory. This requires no external logic and maintains full-speed operation because arbitration is handled entirely on-chip, preserving the 25 ns tRC performance across the expanded bus.

What are the key differences between the "S" and "L" variants of the IDT7006 series?

The "S" variant (e.g., IDT7006S25PF8) prioritizes speed with typical active power of 750 mW and standby power of 5 mW, while the "L" variant reduces active power to 700 mW and standby to 1 mW for ultra-low-power applications. Both share identical timing (25 ns tRC), pinout, and feature set-including BUSY, SEM, and INT logic-but only the "L" variant is characterized for 2 V data retention. IDT7006S25PF8 retains all "L"-level retention capabilities despite its "S" designation.