Infineon Technologies CY7C1051DV33-12BAXI

Overview

CY7C1051DV33-12BAXI from Cypress Semiconductor is a 8-Mbit (512 K × 16) asynchronous CMOS static RAM with 3.3 V supply, 12 ns access time, and industrial temperature range (–40 °C to +85 °C). It supports byte-wide write control via BHE/ BLE inputs, TTL-compatible I/O, and automatic CE-driven power-down for low-power embedded memory buffering in FPGA co-processor systems.

For engineers reviewing the CY7C1051DV33-12BAXI datasheet, CY7C1051DV33-12BAXI pinout, CY7C1051DV33-12BAXI application, or CY7C1051DV33-12BAXI equivalent, key selection criteria include tAA = 12 ns read timing, ISB2 = 20 µA standby current, 44-pin TSOP II package compatibility, and dual-byte enable architecture for selective 8-bit writes in real-time data acquisition subsystems.

Technical Context

The device implements a full asynchronous SRAM interface with independent high- and low-byte enables (BHE/BLE), enabling partial-word writes without external logic. Address decoding uses a 19-bit input (A0–A18) to access all 524,288 × 16-bit locations.

Its power management relies on CE-driven automatic transition into CMOS standby mode (ISB2 = 20 µA) when deselected, while maintaining 2.0 V data retention. Input/output buffers meet TTL voltage thresholds (VIH = 2.0 V, VOL = 0.4 V) and support 30 pF AC test loads per JEDEC standards.

Key Specifications

Pinout & Package

Package: 44-pin Thin Small Outline Package (TSOP II) with center power/ground pinout (Revolutionary layout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C8016-12ZIN and IS61LV51216-12MLI, CY7C1051DV33-12BAXI uniquely delivers integrated byte-enable control, 20 µA CMOS standby, and guaranteed 2.0 V data retention-making it optimal for space-constrained, battery-aware industrial and medical edge devices requiring deterministic partial-word writes.

Availability

CY7C1051DV33-12BAXI is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical imaging frame storage, and avionics sensor fusion hubs requiring stable component supply across extended product lifecycles.

Supply support for CY7C1051DV33-12BAXI 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) designs high-reliability memory and programmable system-on-chip solutions for industrial, automotive, and IoT applications.

The CY7C1051DV33 belongs to Cypress's high-speed asynchronous SRAM product line, engineered specifically for low-latency, low-power buffering in real-time embedded systems with strict timing and thermal constraints.

FAQ

What is the maximum operating frequency supported by CY7C1051DV33-12BAXI?

The device does not operate on a clock signal-it is an asynchronous SRAM. Its maximum effective interface rate is determined by tRC = 12 ns, allowing up to 83.3 MHz continuous read/write cycling when CE, OE, and WE are properly sequenced. No internal PLL or clock multiplier is present.

Does CY7C1051DV33-12BAXI support true dual-port operation?

No. It is a single-port asynchronous SRAM with one shared address/data bus. While BHE and BLE enable independent byte writes, simultaneous read and write to different addresses is not supported-the device lacks separate read and write address paths or arbitration logic required for true dual-port functionality.

Can CY7C1051DV33-12BAXI be used with a 5 V microcontroller interface?

Yes-its inputs are TTL-compatible (VIH = 2.0 V min, VIL = 0.8 V max), and outputs drive to VOH = 2.4 V min at 3.3 V supply. However, direct connection to 5 V outputs requires series resistors or level translators to avoid exceeding absolute maximum input voltage (VCC + 0.3 V = 3.6 V) on address/control lines.

Is the 44-pin TSOP II package RoHS-compliant and lead-free?

Yes. The "X" suffix in CY7C1051DV33-12BAXI denotes lead-free (Pb-free) construction per JEDEC J-STD-609. The TSOP II package uses matte tin terminations and complies with RoHS Directive 2011/65/EU and REACH SVHC requirements.