Infineon Technologies CY7C1020CV33-15ZC

Overview

CY7C1020CV33-15ZC from Cypress Semiconductor is a 512 Kbit (32K × 16) high-speed CMOS static RAM with 15 ns maximum access time, 3.3 V supply, and automatic CE-controlled power-down. It supports independent byte write via BHE/BLE controls and operates across commercial temperature range (0°C to +70°C) in a 44-pin TSOP II package. Used in embedded controllers and real-time data buffering where low-latency random access and selective byte writes are required.

For engineers reviewing the CY7C1020CV33-15ZC datasheet, CY7C1020CV33-15ZC pinout, CY7C1020CV33-15ZC application, or CY7C1020CV33-15ZC equivalent, key selection criteria include tAA ≤ 15 ns, ISB2 ≤ 5 mA standby current, dual-byte enable architecture, and TSOP II footprint compatibility with legacy CY7C1020V33 designs.

Technical Context

The CY7C1020CV33-15ZC implements a fully decoded 32K × 16 asynchronous SRAM array with separate address decoding for rows (A0–A14) and columns. Its read/write control logic uses active-low CE, OE, WE, BHE, and BLE signals to manage chip select, output enable, write initiation, and upper/lower byte masking - enabling partial-word writes without external gating.

It features two distinct power states: active mode (ICC ≤ 80 mA at fMAX) and automatic CE-driven power-down (ISB2 = 5 mA), with fast transition times (tPD = 15 ns, tPU = 0 ns). All I/O pins (I/O1–I/O16) enter high-impedance state during deselect, output disable, or write cycles - eliminating bus contention in multi-device systems.

Key Specifications

Pinout & Package

The CY7C1020CV33-15ZC is housed in a 44-pin Thin Small Outline Package Type II (TSOP II), measuring 18.517 mm × 10.262 mm × 1.194 mm, with gull-wing leads and pin 1 identifier marked on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61LV51216AL-15MLI, the CY7C1020CV33-15ZC offers native dual-byte write control and tighter tHZOE (7 ns vs. 10 ns), improving bus turnaround in burst-mode systems; the MC68HC11E9CP is not a functional substitute and must be excluded from SRAM-based designs.

Availability

CY7C1020CV33-15ZC is available at Aetrix Electronics and suitable for industrial PLC data buffering, network packet memory, and medical imaging frame store applications requiring stable component supply and long-term obsolescence management.

Supply support for CY7C1020CV33-15ZC 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 logic solutions for industrial, automotive, and communications markets.

The CY7C1020CV33 belongs to Cypress's legacy parallel SRAM product line, designed specifically for high-reliability, low-latency external memory expansion in resource-constrained embedded systems with synchronous or asynchronous bus interfaces.

FAQ

What is the maximum clock frequency supported by CY7C1020CV33-15ZC?

The CY7C1020CV33-15ZC is an asynchronous SRAM and does not use a clock signal. Its timing is governed by access parameters such as tRC (15 ns) and tAA (15 ns), allowing reliable operation with bus frequencies up to approximately 66 MHz in systems with zero wait-state controllers. No internal oscillator or clock input exists.

Can CY7C1020CV33-15ZC operate at 2.5 V?

No. The CY7C1020CV33-15ZC is specified exclusively for 3.3 V ± 10% operation (2.97 V to 3.63 V). Operation below 2.97 V violates the Absolute Maximum Ratings and may result in data corruption, increased access time, or failure to meet tAA specification. It is not backward-compatible with 2.5 V logic families.

How does the automatic power-down feature activate?

Automatic power-down activates when Chip Enable (CE) is driven HIGH while the device is deselected. This places the core array and I/O drivers into a low-current state drawing only 5 mA (ISB2), without requiring additional control signals or external circuitry. Power-up occurs within 0 ns (guaranteed by design) upon CE going LOW again.

Are NC pins on CY7C1020CV33-15ZC required to be grounded?

No. Pins 1, 22, 23, and 28 are No Connect (NC) and are not bonded to the die. Cypress recommends leaving them unconnected (floating) or optionally tying them to ground for mechanical stability - but grounding is not electrically required and provides no functional benefit.