Infineon Technologies CY7C1041BNV33L-15ZXC

Overview

CY7C1041BNV33L-15ZXC from Cypress Semiconductor is a 256K × 16 (4-Mbit) high-speed CMOS static RAM with 15 ns access time, 3.3 V supply, TTL-compatible I/O, and byte-wide write enable (BLE/BHE). It operates from –40°C to +85°C and features automatic CE power-down, 2.0 V data retention, and low standby current (0.5 mA max). Used in industrial embedded controllers for nonvolatile cache buffering.

For engineers reviewing the CY7C1041BNV33L-15ZXC datasheet, CY7C1041BNV33L-15ZXC pinout, CY7C1041BNV33L-15ZXC application, or CY7C1041BNV33L-15ZXC equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 = 0.5 mA CMOS standby current, dual-byte write control, and TSOP II Z44 package compatibility with legacy SRAM footprints.

Technical Context

The CY7C1041BNV33L-15ZXC implements a synchronous, asynchronous SRAM architecture with independent byte-enable logic for upper (I/O8–I/O15/BHE) and lower (I/O0–I/O7/BLE) data lanes. Its 262,144-word × 16-bit array uses a 1024 × 4096 memory cell matrix with sense amplifiers and column/row decoders.

It supports three read modes (all-bits, lower-byte-only, upper-byte-only) and three write modes (all-bits, lower-byte-only, upper-byte-only), controlled by CE, OE, WE, BLE, and BHE. Output high-impedance states are enforced during deselection (CE HIGH), output disable (OE HIGH), or write cycles (WE LOW).

Key Specifications

Pinout & Package

44-pin TSOP II (Z44) package with center power/ground pinout (VCC on pins 15/30, VSS on pins 14/29), optimized for high-density PCB layouts and reduced ground bounce.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C4008-15ZIN and IS61LV25616AL-15TQLI, the CY7C1041BNV33L-15ZXC uniquely combines TSOP II Z44 compatibility, 0.5 mA ISB2 standby, and guaranteed 2.0 V data retention-making it optimal for space-constrained industrial systems requiring battery-backed memory hold.

Availability

CY7C1041BNV33L-15ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffers, medical imaging frame stores, avionics sensor fusion hubs, and test & measurement pattern generators requiring stable component supply across extended temperature ranges.

Supply support for CY7C1041BNV33L-15ZXC 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 connectivity solutions for industrial, automotive, and consumer markets.

This device belongs to Cypress's legacy high-speed asynchronous SRAM product line, designed specifically for deterministic, low-latency data buffering in real-time embedded systems where predictability outweighs density or serial interface flexibility.

FAQ

What is the maximum operating frequency supported by CY7C1041BNV33L-15ZXC?

The device does not operate on a clock signal-it is an asynchronous SRAM. Its maximum effective bus rate is determined by its 15 ns access time (tAA) and 15 ns cycle time (tRC), enabling reliable operation on 66 MHz buses (15 ns ≈ 66.7 MHz period) when timing margins are properly observed per the datasheet's AC specifications.

Can CY7C1041BNV33L-15ZXC be used with a 2.5 V I/O interface?

No. The device requires VCC = 3.3 V ± 0.3 V (i.e., 3.0–3.6 V) for normal operation. While it retains data at 2.0 V, I/O levels (VIH = 2.2 V min, VIL = 0.8 V max) and internal logic are specified only for 3.3 V operation; using 2.5 V violates VIH and may cause read failures or increased ICC.

Does CY7C1041BNV33L-15ZXC support true dual-port operation?

No. It is a single-port asynchronous SRAM with one address bus and bidirectional I/O lines. Though BLE/BHE allow byte-selective access, concurrent read and write operations on independent addresses are not supported-unlike true dual-port SRAMs which have separate read and write ports.

Is the TSOP II Z44 package of CY7C1041BNV33L-15ZXC RoHS-compliant?

Yes. The "ZXC" suffix explicitly denotes Pb-free (RoHS-compliant) construction per the ordering information table in the datasheet (Document #: 001-06434 Rev. **), and the package diagram confirms compliance with JEDEC TSOP II standards for lead-free solder reflow profiles.