Renesas 7024L55PF

Overview

7024L55PF from IDT is a high-speed 4K × 16 true dual-port static RAM with independent left/right ports, 55 ns max read cycle time, TTL-compatible 5V ±10% supply, and 2V battery backup data retention. It supports simultaneous asynchronous access to the same memory location and implements on-chip semaphore arbitration for inter-processor communication in real-time embedded systems.

For engineers reviewing the 7024L55PF datasheet, 7024L55PF pinout, 7024L55PF application, or 7024L55PF equivalent, this page delivers verified specifications, package mapping to 100-pin TQFP, functional pin roles, industrial temperature support (–40°C to +85°C), and validated alternatives for dual-port memory expansion in FPGA co-processor or DSP host architectures.

Technical Context

The 7024L55PF implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port-enabling concurrent read/write without external logic. Its on-chip arbitration logic resolves contention via BUSY flag signaling and supports Master/Slave cascading for 32-bit+ bus width expansion.

It integrates full hardware semaphore support (8 flags addressed by A0–A2), interrupt flag generation (INTL/INTR), and separate upper/lower byte enables (UBL/UBR, LBL/LBR) for multiplexed bus compatibility. The L-version delivers ultra-low standby current (1 µA typical) and retains data at 2V for battery-backed operation.

Key Specifications

Pinout & Package

7024L55PF is housed in a 100-pin Thin Quad Flatpack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm body, and 1.4 mm height. Pin 1 is marked by a corner notch; all VCC and GND pins must be externally decoupled per datasheet layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C136-55JC and AS7C34098B-55TIN, the 7024L55PF uniquely combines industrial temperature rating, on-chip semaphore logic, and 2V battery data retention-making it irreplaceable in ruggedized, safety-critical dual-processor systems requiring deterministic synchronization and long-term nonvolatile state preservation.

Availability

7024L55PF is available at Aetrix Electronics and suitable for motor control co-processors, FPGA-based real-time data buffering, DSP host memory expansion, redundant controller synchronization, and industrial instrumentation requiring stable component supply across extended lifecycle programs.

Supply support for 7024L55PF 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 timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics since 2019.

The 7024L55PF belongs to IDT's legacy high-speed dual-port SRAM product line, engineered specifically for deterministic inter-processor communication in real-time embedded systems demanding zero-software-overhead synchronization and robust data integrity under voltage stress.

FAQ

What is the maximum operating frequency supported by the 7024L55PF?

The 7024L55PF does not operate on a clock signal-it is a fully asynchronous SRAM. Its performance is defined by timing parameters: maximum read cycle time (tRC) is 55 ns, meaning it supports effective throughput up to ~18.2 MHz in burst-read scenarios. Actual system bandwidth depends on bus protocol overhead, not a fixed clock frequency.

Does the 7024L55PF support battery backup operation, and what voltage is required?

Yes, the 7024L55PF supports battery backup data retention at 2.0 V minimum (VDR = 2.0 V). In retention mode, CE must be held high and all inputs at valid logic levels; typical retention current is 100 µA, enabling multi-year operation from a small lithium coin cell.

How does the Master/Slave configuration work on the 7024L55PF?

The M/S pin configures port arbitration behavior: when M/S = HIGH, the device operates as Master-BUSY is an output flag indicating contention; when M/S = LOW, it operates as Slave-BUSY is an input that blocks writes until deasserted. This enables seamless cascading of multiple 7024L55PF devices for wider data buses without external logic.

Can both ports of the 7024L55PF access the same memory location simultaneously?

Yes-the 7024L55PF uses true dual-port memory cells, allowing simultaneous reads from the same address on both ports with no timing penalty. Simultaneous write/write or read/write to the same location triggers BUSY arbitration, resolved in hardware via the M/S configuration and priority logic.

What package type is used for the 7024L55PF, and are there thermal considerations?

The 7024L55PF is supplied in a 100-pin Thin Quad Flatpack (TQFP) with 14 mm × 14 mm body and 1.4 mm height. Its thermal resistance (θJA) is 45°C/W; for continuous operation at +85°C ambient, keep power dissipation below 220 mW-well within its 750 mW active power budget (typical).