Renesas 7008L15PFG8

Overview

7008L15PFG8 from IDT (Integrated Device Technology) is a high-speed 64K × 8 true dual-ported static RAM with independent left/right ports, 15 ns max read cycle time, TTL-compatible 5V ±10% operation, and integrated semaphore/arbitration logic for inter-processor communication in real-time embedded systems.

For engineers reviewing the 7008L15PFG8 datasheet, 7008L15PFG8 pinout, 7008L15PFG8 application, or 7008L15PFG8 equivalent, key selection criteria include port-to-port contention handling via BUSY signaling, low-power standby current (1 mA typ.), master/slave cascading capability, and industrial-grade timing validation at –40°C to +85°C.

Technical Context

The 7008L15PFG8 implements fully asynchronous dual-port access with separate address, control, and I/O buses per port-enabling simultaneous reads of the same memory location without conflict. Its on-chip arbitration logic resolves port contention using push-pull BUSY flags and supports both address-match and CE-controlled BUSY assertion modes.

It integrates eight hardware semaphores addressed by A0–A2, accessed via dedicated SEM enable with CE = VIH, and provides interrupt flag generation via mailbox addresses FFFE_H (INTL) and FFFF_H (INTR), with write-to-set/read-to-clear semantics confirmed in Truth Table IV.

Key Specifications

Pinout & Package

7008L15PFG8 is housed in a 100-pin Thin Quad Flatpack (TQFP) package with exposed thermal pad, compliant with JEDEC MO-153. Pin numbering follows standard counter-clockwise orientation from index mark.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and AS7C362000B-15TIN, the 7008L15PFG8 uniquely integrates BUSY arbitration, semaphore registers, and interrupt mailboxes in a 5V 64K × 8 configuration-reducing BOM count and eliminating timing-critical glue logic in real-time multi-CPU systems.

Availability

7008L15PFG8 is available at Aetrix Electronics and suitable for industrial PLC controllers, telecom line cards, avionics data concentrators, and medical imaging subsystems requiring stable component supply with long-term lifecycle assurance.

Supply support for 7008L15PFG8 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 timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019.

The 7008L15PFG8 belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic inter-processor communication in real-time embedded systems where hardware arbitration and low-latency shared memory are essential.

FAQ

What is the maximum operating temperature range certified for the 7008L15PFG8?

The 7008L15PFG8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all AC and DC electrical specifications in the official datasheet (Rev. Jan.05.22), including timing parameters like tAA (15 ns max) and ISB3 (1 µA typ. standby current). It is not qualified for extended commercial (0°C to +70°C only) or military grades.

Does the 7008L15PFG8 support true simultaneous read operations from both ports to the same memory address?

Yes, the 7008L15PFG8 uses true dual-ported memory cells that permit simultaneous reads of the same memory location from left and right ports without contention or timing penalty. This capability is explicitly stated in the "Features" section and confirmed by functional block diagram labeling of independent I/O and address paths for each port.

How does the BUSY arbitration logic function when the 7008L15PFG8 is configured as a Slave?

When M/S = VIL (Slave mode), BUSYL and BUSYR become inputs-not outputs. The BUSY signal from the Master device drives these pins to inhibit writes on the Slave port during contention. This behavior is documented in Note 1 of the Functional Block Diagram and Truth Table V, where BUSY inputs internally disable writes regardless of logic level on the pin.

What are the valid address ranges used for interrupt flag generation in the 7008L15PFG8?

The 7008L15PFG8 uses fixed mailbox addresses for interrupt generation: writing to FFFE_H asserts INTL (left port interrupt), and writing to FFFF_H asserts INTR (right port interrupt). Clearing is performed by reading those same addresses-confirmed in Truth Table IV and the Functional Description section of the datasheet.

Is the 7008L15PFG8 pin-compatible with other speed grades in the IDT7008 family, such as the 7008L20PFG8?

Yes, all IDT7008 variants-including 7008L15PFG8, 7008L20PFG8, and 7008L25PFG8-share identical 100-pin TQFP (PNG100) packaging and pinout. Speed grade differences affect only timing parameters (e.g., tAA = 15 ns vs. 20 ns) and do not alter electrical or mechanical compatibility, enabling drop-in replacement for timing margin optimization.