Infineon Technologies CY7C1061AV33-12ZXI

Overview

CY7C1061AV33-12ZXI from Cypress Semiconductor is a 16-Mbit (1M × 16) asynchronous CMOS static RAM with 12 ns maximum access time, 3.3 V ±0.3 V operation, automatic CE power-down, and TTL-compatible I/O. It serves as main or buffer memory in industrial control systems requiring deterministic timing and low-power standby.

For engineers reviewing the CY7C1061AV33-12ZXI datasheet, CY7C1061AV33-12ZXI pinout, CY7C1061AV33-12ZXI application, or CY7C1061AV33-12ZXI equivalent, key selection criteria include tAA = 12 ns read timing, ISB2 = 50 mA CMOS standby current, byte-enable granularity (BLE/BHE), 54-pin TSOP II package compatibility, and industrial temperature range support (–40°C to +85°C).

Technical Context

This SRAM implements a full 1M × 16-bit array with independent byte enable controls (BLE for IO0–IO7, BHE for IO8–IO15), enabling partial-word writes without read-modify-write cycles. Address decoding uses separate row/column decoders with sense amplifiers for stable data latching.

It supports three distinct power states: active (ICC ≤ 260 mA), automatic CE power-down (ISB2 = 50 mA at CMOS inputs), and data retention at 2.0 V (VCCDR). Chip select logic requires CE1 LOW and CE2 HIGH for activation, with OE/WE/BLE/BHE determining read/write direction and byte granularity.

Key Specifications

Pinout & Package

Package: 54-pin Thin Small Outline Package Type II (TSOP II), Pb-free, body size 18.4 mm × 10.16 mm × 1.2 mm, standard JEDEC MO-141AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C1008-12ZIN and IS61LV102416AL-12MLI, CY7C1061AV33-12ZXI uniquely delivers byte-selectable 16-bit writes in a drop-in TSOP II footprint with lowest industrial standby current (50 mA), making it optimal for space-constrained, thermally demanding, and power-sensitive embedded controllers.

Availability

CY7C1061AV33-12ZXI is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging subsystems, railway signaling controllers, and avionics display interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY7C1061AV33-12ZXI 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 solutions for industrial, automotive, and communications markets, with headquarters in San Jose, CA.

The CY7C1061AV33 belongs to Cypress's high-speed asynchronous SRAM product line, engineered specifically for deterministic, low-latency memory interfacing in real-time embedded control systems where refresh-free operation and industrial temperature resilience are mandatory.

FAQ

What is the minimum VCC required to retain data in CY7C1061AV33-12ZXI?

Data retention is guaranteed down to 2.0 V (VCCDR) across the full industrial temperature range (–40°C to +85°C), as specified in the DC Electrical Characteristics table. At this voltage, the device holds stored data indefinitely while drawing negligible current, provided all inputs are held static or at valid logic levels. No external hold signal is needed.

Can CY7C1061AV33-12ZXI operate with only CE1 asserted, ignoring CE2?

No. The device requires CE1 LOW *and* CE2 HIGH simultaneously to enter active mode. If CE2 is not driven HIGH (e.g., left floating or pulled LOW), the SRAM remains in power-down standby (ISB2 = 50 mA) regardless of CE1 state. CE2 must be actively controlled to VIH (≥2.0 V) for reliable read/write operation.

Does the 12 ns access time apply to both read and write cycles?

The 12 ns tAA (address-to-data-valid) applies only to read operations. Write timing is governed by tWC (write cycle time = 12 ns), tSCE (CE to write end = 7–8 ns), and tSD (data setup = 5.5–6 ns). Input data must be stable before WE goes LOW and held for tHD (data hold = 0 ns), meaning setup timing dominates write reliability.

Are NC and DNU pins on CY7C1061AV33-12ZXI safe to connect to ground?

NC (no-connect) pins are unconnected internally and may be left floating or tied to VSS without effect. DNU (do-not-use) pins must be tied to VSS (ground) or left floating - tying them to VCC or driving them HIGH risks undefined behavior or increased leakage. Pin 54 (VSS) and pin 49 (VSS) are dedicated ground pins; DNU pins are explicitly identified in the Pin Configurations diagram on page 3 of the datasheet.