Renesas 7006S55PF

Overview

IDT7006S55PF from Integrated Device Technology (IDT) is a high-speed 16K × 8 dual-port static RAM with true independent left/right port access, 55 ns maximum read cycle time, TTL-compatible 5 V ±10% operation, and integrated on-chip semaphore and arbitration logic for real-time inter-processor communication in embedded control systems.

For engineers reviewing the IDT7006S55PF datasheet, IDT7006S55PF pinout, IDT7006S55PF application, or IDT7006S55PF equivalent, this device supports simultaneous asynchronous reads/writes across ports, provides BUSY/INT/SEM flags for contention management, and delivers 200 V ESD tolerance and 2 V battery-backed data retention - critical for industrial motion controllers, avionics data buffers, and redundant telecom switching fabrics.

Technical Context

The IDT7006S55PF implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling concurrent memory access without external arbitration logic. Its on-chip arbitration resolves port conflicts via M/S-selectable master/slave BUSY signaling and priority-based semaphore flag updates.

It supports both RAM array access (CE = VIL, SEM = VIH) and semaphore register access (CE = VIH, SEM = VIL), with dedicated INTL/INTR outputs and SEML/SEMR enables. The device operates across commercial and military temperature ranges and retains data at 2 V with ≤4 mA retention current.

Key Specifications

Pinout & Package

Package: 68-pin ceramic PGA (PLG68), body size ≈ 1.18 in × 1.18 in × 0.16 in; requires all VCC pins connected to 5 V supply and all GND pins tied to ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-55AXC and AS7C316000B-55PCN, the IDT7006S55PF uniquely integrates BUSY arbitration, semaphore registers, and 2 V data retention in a 5 V-native 68-pin PGA package - making it irreplaceable in legacy 5 V avionics and industrial systems requiring hardware-enforced coherency and fail-safe state preservation.

Availability

IDT7006S55PF is available at Aetrix Electronics and suitable for avionics flight control buffers, industrial PLC redundancy modules, and telecom line card switch fabrics requiring stable component supply, long-term lifecycle support, and MIL-qualified reliability.

Supply support for IDT7006S55PF 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 signal conditioning ICs, acquired by Renesas Electronics in 2019.

The IDT7006 family was designed for high-reliability dual-processor systems requiring deterministic memory coherency, hardware arbitration, and battery-backed state retention - targeting aerospace, defense, and industrial automation markets.

FAQ

What is the maximum operating temperature range for the IDT7006S55PF?

The IDT7006S55PF is rated for the military temperature range of –55°C to +125°C, with guaranteed operation under bias at up to +125°C. This specification is validated per MIL-PRF-38535 QML Class B requirements, making it suitable for harsh-environment applications such as airborne radar and engine control units where thermal stability is mission-critical. The IDT7006S55PF maintains full functionality across this range without derating.

Does the IDT7006S55PF support true simultaneous reads from both ports to the same memory location?

Yes, the IDT7006S55PF features true dual-ported memory cells that allow independent, asynchronous reads from both left and right ports to identical addresses without contention or delay. This capability is inherent to its silicon architecture - no external logic or timing constraints are required. The IDT7006S55PF guarantees valid data output on both I/O buses within tAA (≤55 ns) after address assertion on each port.

How does the BUSY arbitration mechanism work in the IDT7006S55PF when configured as Master?

When M/S = HIGH, the IDT7006S55PF operates as Master: BUSYL and BUSYR become output signals that assert LOW when a write on one port conflicts with an access to the same address on the other port. The IDT7006S55PF uses on-chip priority logic (tAPS = 5 ns min) to resolve contention, ensuring deterministic behavior. BUSY remains asserted until the winning port completes its cycle, blocking the losing port's R/W transition.

Can the IDT7006S55PF retain data at 2 V while fully powered down?

Yes, the IDT7006S55PF supports true data retention at VCC = 2.0 V (minimum) with ICCDR ≤ 4 mA (max) across military temperature range. In this mode, CE must be driven HIGH, all inputs held at valid TTL levels (VIL ≤ 0.8 V or VIH ≥ 2.4 V), and SEM > VHC. The IDT7006S55PF preserves all 128 Kbits without refresh - verified per Table 9 in the datasheet and intended for use with backup batteries or supercapacitors.

What package type is used for the IDT7006S55PF and what are its mechanical dimensions?

The IDT7006S55PF uses a 68-pin ceramic pin-grid array (PGA) package designated PLG68, with approximate dimensions of 1.18 inches × 1.18 inches × 0.16 inches (30.0 mm × 30.0 mm × 4.1 mm). All 12 VCC and 12 GND pins must be individually connected to respective power/ground planes. The IDT7006S55PF's PGA construction provides superior thermal dissipation and hermetic reliability for high-reliability deployments.