Infineon Technologies CY7C1059DV33-10BAXI

Overview

CY7C1059DV33-10BAXI from Cypress Semiconductor is a 8-Mbit (1M × 8) high-speed CMOS static RAM with 10 ns access time, 3.3 V supply, industrial temperature range (–40°C to +85°C), and low active current (110 mA). It supports TTL-compatible interfacing, automatic CE-controlled power-down, and data retention at 2.0 V, deployed in embedded control memory buffers and real-time data logging subsystems.

For engineers reviewing the CY7C1059DV33-10BAXI datasheet, CY7C1059DV33-10BAXI pinout, CY7C1059DV33-10BAXI application, or CY7C1059DV33-10BAXI equivalent, key selection criteria include tAA = 10 ns read timing, ISB2 = 20 mA standby current, FBGA-36 package compatibility, and CE/OE/WE three-control logic for multi-chip memory expansion.

Technical Context

This SRAM implements asynchronous random-access architecture with tri-state I/O drivers, address-valid-to-data-valid propagation governed by tAA (10 ns), and dual power-down modes: ISB1 (40 mA, TTL input threshold) and ISB2 (20 mA, CMOS input threshold). Deselection via CE HIGH forces automatic transition to low-power retention state.

It uses separate CE, OE, and WE controls to decouple chip selection, output enable, and write initiation-enabling interleaved read/write operations and seamless bank expansion without external gating logic. The 1M × 8 organization maps A0–A19 to 20-bit addressing and I/O0–I/O7 to bidirectional data bus.

Key Specifications

Pinout & Package

The CY7C1059DV33-10BAXI is packaged in a lead-free 36-ball Fine-Pitch Ball Grid Array (FBGA), 7.0 mm × 8.5 mm × 1.2 mm body, with center power/ground pinout optimized for signal integrity and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C1008-10TIN and IS61LV10248-10ML, the CY7C1059DV33-10BAXI uniquely delivers 20 mA ISB2 standby current and 2.0 V data retention in an FBGA package-making it optimal for space-constrained, battery-aware industrial systems requiring robust low-voltage operation.

Availability

CY7C1059DV33-10BAXI is available at Aetrix Electronics and suitable for industrial PLC data buffers, medical real-time logging subsystems, and avionics sensor interface modules requiring stable component supply and long-term lifecycle support.

Supply support for CY7C1059DV33-10BAXI 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 consumer markets.

The CY7C1059DV33 belongs to Cypress's high-speed asynchronous SRAM product line, designed specifically for deterministic, low-latency memory interfacing in real-time embedded systems where timing predictability and power efficiency are critical.

FAQ

What is the minimum VCC required to retain data in CY7C1059DV33-10BAXI?

The device guarantees data retention down to VCC = 2.0 V, provided CE is held HIGH and input voltages remain within CMOS thresholds (VIN > VCC – 0.3 V or VIN < 0.3 V). This enables operation during brown-out conditions without external backup power circuitry.

Does CY7C1059DV33-10BAXI support concurrent read and write operations?

No-it is a single-port asynchronous SRAM and does not support true concurrent access. Read and write cycles are mutually exclusive; overlapping CE LOW with WE LOW initiates a write, while CE LOW with WE HIGH and OE LOW enables read. Bus arbitration must be handled externally.

Can CY7C1059DV33-10BAXI be used with 5 V tolerant microcontrollers?

No-the inputs are not 5 V tolerant. VIH max is VCC + 0.3 V = 3.6 V at 3.3 V supply. Direct connection to 5 V logic requires level-shifting circuitry; however, its TTL-compatible thresholds (VIH = 2.0 V min) allow safe interface with 3.3 V LVTTL outputs.

What is the significance of the "BAXI" suffix in CY7C1059DV33-10BAXI?

The "BAXI" suffix denotes the 36-ball FBGA package (51-85105), lead-free finish, and industrial temperature grade (–40°C to +85°C). "BA" = FBGA, "X" = Pb-free, "I" = Industrial; this distinguishes it from the TSOP-II variant "ZSXI".