Renesas 7034L15PF

Overview

7034L15PF from Integrated Device Technology (IDT) is a high-speed, 4K × 18-bit true dual-port static RAM with independent left/right ports, 15 ns max access time (commercial grade), 5 V ±10% single supply, and 1 mW typical standby power. It supports simultaneous read/write to same address via on-chip BUSY arbitration and is used in real-time interprocessor communication systems requiring deterministic latency.

For engineers reviewing the 7034L15PF datasheet, 7034L15PF pinout, 7034L15PF application, or 7034L15PF equivalent, this page delivers verified functional identity, validated 100-pin TQFP package mapping, confirmed dual-port timing behavior, and two production-validated alternative parts for legacy system continuity planning.

Technical Context

The 7034L15PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port - enabling concurrent read/write access without external arbitration logic. Its on-chip hardware semaphore logic (8 flags, addressed via A0–A2) and interrupt flag support (INTL/INTR at FFE/FFF hex) provide atomic resource coordination between heterogeneous processors.

Port arbitration uses push-pull BUSY outputs (master mode) or BUSY inputs (slave mode) controlled by the M/S pin; BUSY assertion depends solely on chip enable and address match timing, not R/W state. The device supports battery backup data retention down to 2 V with ≤4000 µA retention current (industrial range).

Key Specifications

Pinout & Package

7034L15PF is housed in a 100-pin TQFP (PN100) package with 0.5 mm pitch, 14 mm × 14 mm footprint, and 1.4 mm height. All VCC and GND pins must be connected per layout guidelines; no internal voltage regulation is provided.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 7034L15PF, CY7C024AV-15AXC offers voltage flexibility but sacrifices 2-bit data width and retention capability, while IDT70V25L15PF reduces power and cost but removes hardware arbitration - making 7034L15PF uniquely suited for legacy 5 V, safety-critical, or battery-backed dual-processor systems.

Availability

7034L15PF is available at Aetrix Electronics and suitable for real-time interprocessor communication, redundant control systems, telecom line card buffering, and legacy bus bridge interface applications requiring stable component supply and long-term lifecycle support.

Supply support for 7034L15PF 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas in 2019. IDT pioneered high-performance dual-port SRAM architectures for real-time embedded systems.

The IDT7034 family was designed specifically for deterministic, low-latency interprocessor communication in industrial control, telecom infrastructure, and avionics - emphasizing hardware arbitration, battery backup, and industrial temperature reliability.

FAQ

What is the exact memory configuration and speed grade of 7034L15PF?

The 7034L15PF is a 4K × 18-bit (72 Kbit) true dual-port static RAM with 15 ns maximum access time, commercial temperature grade (0°C to +70°C), and L-suffix indicating low-power standby (1 mW typical). It operates on a single 5 V ±10% supply and is packaged in a 100-pin TQFP. This exact configuration is confirmed in IDT's DSC 4089/11 datasheet revision May 2018.

Does 7034L15PF support battery backup data retention, and what are the specifications?

Yes, 7034L15PF supports battery backup data retention down to 2.0 V minimum supply voltage, with retention current ≤4000 µA over the industrial temperature range (–40°C to +85°C). This capability is exclusive to the 'L' (low-power) variant and is validated in the DC Electrical Characteristics table (Table 10) of the official datasheet.

How does the BUSY arbitration logic function in 7034L15PF, and is it mandatory?

The BUSY logic in 7034L15PF detects simultaneous access to the same address across ports and asserts BUSYL/BUSYR to stall the later-arriving write - preventing data corruption. It is not mandatory: setting M/S = VIL disables arbitration and converts BUSY pins to write-inhibit inputs. The timing guarantee tAPS = 5 ns ensures deterministic resolution, as specified in Table 14.

Can 7034L15PF be used in master/slave configurations for wider data paths, and how is it implemented?

Yes, 7034L15PF supports master/slave cascading for 36-bit+ word widths. One device is configured as master (M/S = VIH) to generate BUSY signals; others are slaves (M/S = VIL) that accept BUSY as write-inhibit inputs. Address and CE must be aligned across devices, and timing constraints (e.g., tBDD ≤30 ns) must be met to avoid glitches - detailed in Figure 3 and Section "WIDTH EXPANSION WITH BUSY LOGIC".

What are the valid interrupt mailbox addresses for 7034L15PF, and how are they triggered?

The 7034L15PF uses address FFE_HEX to trigger the left-port interrupt flag (INTL) when the right port performs a write (CER = R/WR = VIL), and FFF_HEX to trigger the right-port flag (INTR) on a left-port write. Both flags are cleared by reading the respective address with OE enabled. This behavior is defined in Truth Table III and Functional Description section (page 15) of the datasheet.