Infineon Technologies CY7C1041D-10ZSXIT

Overview

CY7C1041D-10ZSXIT from Cypress Semiconductor is a 4-Mbit (256 K × 16) high-speed CMOS static RAM with 10 ns access time, 5 V supply, TTL-compatible I/O, and automatic CE power-down. It supports byte-wide writes via BHE/ BLE control, operates from –40 °C to +85 °C, and delivers 90 mA active current and 10 mA CMOS standby current. It is used in industrial embedded controllers requiring fast, reliable non-volatile data buffering during processor read/write cycles.

For engineers reviewing the CY7C1041D-10ZSXIT datasheet, CY7C1041D-10ZSXIT pinout, CY7C1041D-10ZSXIT application, or CY7C1041D-10ZSXIT equivalent, key selection criteria include tAA = 10 ns timing, 256K × 16 organization, SOJ/TSOP II package compatibility, byte-enable functionality, and 2.0 V data retention capability under low-power hold conditions.

Technical Context

The CY7C1041D-10ZSXIT implements a synchronous, address-decoded SRAM architecture with dual-byte write enable (BHE/BLE), independent output enable (OE), and chip enable (CE) for hierarchical memory expansion. Its logic block includes row/column decoders, sense amplifiers, and TTL-level input buffers with VIH = 2.0 V min and VOL = 0.4 V max at 8 mA.

It features automatic power-down when CE is HIGH, placing I/Os in high-impedance state during deselect, and supports four distinct read/write modes defined by CE, WE, OE, BHE, and BLE states. Data retention is guaranteed at VCC = 2.0 V with ICCDR ≤ 10 mA in industrial temperature range.

Key Specifications

Pinout & Package

The CY7C1041D-10ZSXIT is packaged in a 44-pin TSOP II (400-mil body width) with center power/ground pinout, optimized for high-density PCB layout and thermal dissipation (θJA = 50.66 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C4008-10TIN and IS61LV25616AL-10TLI, the CY7C1041D-10ZSXIT uniquely supports native 5 V TTL interfacing, 2.0 V data retention, and byte-selectable writes-making it irreplaceable in legacy industrial and automotive 5 V controller designs requiring guaranteed compatibility and robustness.

Availability

CY7C1041D-10ZSXIT is available at Aetrix Electronics and suitable for industrial PLC data buffering, automotive ECU scratchpad, medical imaging frame buffering, and avionics display controller memory requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY7C1041D-10ZSXIT 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

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in memory, microcontrollers, and programmable system-on-chip solutions for industrial, automotive, and communications markets.

The CY7C1041D belongs to Cypress's high-speed parallel SRAM product line, designed specifically for 5 V TTL-based embedded systems requiring deterministic, low-latency, and pin-compatible memory upgrades without redesign.

FAQ

Is CY7C1041D-10ZSXIT compatible with 3.3 V microcontrollers?

No. The device requires a 5.0 V ± 0.5 V supply and TTL-level inputs (VIH = 2.0 V min, VIL = 0.8 V max). Interfacing with 3.3 V controllers demands level-shifting circuitry due to its 5 V-only I/O structure and lack of mixed-voltage tolerance.

Does CY7C1041D-10ZSXIT support true dual-port operation?

No. It is a single-port SRAM with byte-selectable writes (BHE/BLE) and shared address/data paths. Concurrent read and write to different addresses is not supported; true dual-port functionality requires dedicated dual-port SRAMs like IDT70V25.

What is the maximum clock frequency this SRAM can support in a synchronous interface?

The device has no internal clock. Its maximum usable bus frequency is determined by tRC = 10 ns, permitting up to 100 MHz burst transfers when paired with a controller that meets setup/hold timing (e.g., tSA = 0 ns, tHA = 0 ns). Synchronous controllers must insert appropriate wait states if cycle time falls below 10 ns.

Can CY7C1041D-10ZSXIT retain data during complete power removal?

No. Data retention requires VCC ≥ 2.0 V. If power is fully removed, contents are lost. However, with a backup battery or capacitor sustaining ≥2.0 V on VCC during main supply interruption, data remains intact for indefinite duration per specification.