Renesas 7005L15PFG

Overview

7005L15PFG from IDT is a high-speed 8K × 8 (64 Kbit) true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time (tRC), TTL-compatible 5 V ±10% supply, and industrial temperature range (–40°C to +85°C). It enables simultaneous asynchronous access to the same memory location and supports master/slave cascading for 16-bit+ data bus expansion in real-time inter-processor communication systems.

For engineers reviewing the 7005L15PFG datasheet, 7005L15PFG pinout, 7005L15PFG application, or 7005L15PFG equivalent, key selection considerations include its 15 ns access timing, 1 mW typical standby power, on-chip semaphore and BUSY arbitration logic, battery backup capability (2 V data retention), and 64-pin TQFP package compatibility with legacy IDT7005 designs.

Technical Context

The 7005L15PFG implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-no clock required. Its on-chip arbitration logic resolves contention via BUSY flag assertion (output on master, input on slave) and supports both CE-controlled and address-match-based arbitration modes.

It integrates full hardware semaphore signaling across ports using A0–A2 to select among eight flags, with dedicated SEM pins and interrupt generation (INTL/INTR) triggered by write-to-specific addresses (e.g., 1FFFh for interrupt set). The device operates in standard active mode or low-power standby (ISB3 = 0.2 mA typ.) when chip enables are deasserted.

Key Specifications

Pinout & Package

7005L15PFG is housed in a 64-pin TQFP (PNG64) package with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad. Pin functions are electrically symmetric between left and right ports, supporting bidirectional memory sharing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C024AV-15ZXI and R1EX24002AS0C-15, the 7005L15PFG uniquely combines industrial temperature rating, integrated semaphore/BUSY arbitration, 2 V data retention, and 5 V TTL compatibility in a pin-compatible 64-pin TQFP footprint-making it irreplaceable for ruggedized real-time embedded systems requiring guaranteed contention resolution.

Availability

7005L15PFG is available at Aetrix Electronics and suitable for industrial automation, aerospace data loggers, and telecom infrastructure requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 7005L15PFG 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 high-performance timing, memory, and interface solutions, now part of Renesas Electronics.

The IDT7005 product line was designed specifically for deterministic inter-processor communication in real-time embedded systems, emphasizing hardware arbitration, low-latency access, and industrial reliability.

FAQ

What is the maximum operating frequency supported by the 7005L15PFG?

The 7005L15PFG does not operate on a clock; it is an asynchronous SRAM. Its 15 ns read cycle time (tRC) supports effective bus rates up to 66.7 MHz (1/15 ns) in systems with zero wait-state controllers. Actual throughput depends on address setup, hold, and enable timing margins defined in the AC specifications table.

Does the 7005L15PFG support battery backup operation?

Yes, the 7005L15PFG supports battery backup with guaranteed data retention down to 2 V (VDR), as specified in Table 9. In data retention mode, ICCDR is 100 µA typ. and 4 mA max across military/industrial grades, enabling reliable operation from coin cells or supercapacitors during main power failure.

How does the BUSY arbitration logic function in the 7005L15PFG?

In master configuration (M/S = H), BUSYL and BUSYR are push-pull outputs that assert low when the opposite port initiates a conflicting access. In slave mode (M/S = L), BUSY pins become inputs that inhibit writes when driven low by a master. Arbitration uses either CE timing or address-match detection, with tAPS = 5 ns minimum priority setup time.

Can the 7005L15PFG be used in a 16-bit data bus configuration?

Yes - the 7005L15PFG supports 16-bit expansion via master/slave cascading. Two devices are connected with M/S = H on the master and M/S = L on the slave; the master's BUSY output connects to the slave's BUSY input, enabling coordinated access without external glue logic, as described in the functional block diagram and pin configuration notes.

What are the valid logic levels for input signals on the 7005L15PFG?

Per Table 6, VIH is 2.2 V min (guaranteed high) and 6.0 V max (absolute max), while VIL is –0.5 V min (pulse <10 ns) and 0.8 V max (guaranteed low). All inputs are TTL-compatible, allowing direct interfacing with 5 V microcontrollers and FPGAs without level shifters.