Infineon Technologies CY7C1021CV33-10ZSXAT

Overview

CY7C1021CV33-10ZSXAT from Infineon Technologies (formerly Cypress) is an automotive-grade 1-Mbit (64 K × 16) CMOS static RAM with 10 ns access time, 3.3 V supply, and -40 °C to +85 °C operation. It supports independent byte write control via BHE/BLE, automatic CE-driven power-down, and low active power (max 325 mW). Used in engine control units, ADAS domain controllers, and infotainment head units requiring deterministic SRAM access.

For engineers reviewing the CY7C1021CV33-10ZSXAT datasheet, CY7C1021CV33-10ZSXAT pinout, CY7C1021CV33-10ZSXAT application, or CY7C1021CV33-10ZSXAT equivalent, key selection criteria include tAA ≤ 10 ns, Automotive-A temperature compliance, SOJ/TSOP II package compatibility, and dual-byte enable functionality for partial-word writes.

Technical Context

This SRAM implements a synchronous, non-volatile-access memory array organized as 65,536 × 16 bits, with address decoding across A0–A15 and bidirectional I/O1–I/O16. Control logic uses active-low CE, WE, OE, BHE, and BLE to manage chip select, write/read mode, output enable, and upper/lower byte masking.

It features automatic power-down when CE is HIGH, reducing ISB1 to 15 mA (max) and ISB2 to 5 mA (max) under TTL/CMOS input conditions. All timing parameters-including tRC = 10 ns, tDOE = 5 ns, and tPD = 10 ns-are specified over full Automotive-A operating range with 3.3 V ±10% supply.

Key Specifications

Pinout & Package

44-pin 400-mil Small Outline J-Lead (SOJ) package with gull-wing leads, 1.27 mm pitch, and body width of 10.16 mm. Pin 1 marked by notch or dot; pins arranged in two parallel rows.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-Mbit SRAM applications.

Compared with IS61LV1024-10TLI and AS6C1008-10TIN, CY7C1021CV33-10ZSXAT uniquely delivers AEC-Q100-compliant 1-Mbit density in a single 44-pin SOJ package with dual-byte write capability-reducing BOM count and enabling tighter timing margins in safety-critical automotive subsystems.

Availability

CY7C1021CV33-10ZSXAT is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and infotainment head units requiring stable component supply across extended automotive production lifecycles.

Supply support for CY7C1021CV33-10ZSXAT 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global R&D and manufacturing infrastructure.

CY7C1021CV33 belongs to Infineon's automotive SRAM product line, designed specifically for deterministic, low-latency data buffering in safety-critical vehicle subsystems operating under harsh thermal and EMI conditions.

FAQ

What is the maximum clock frequency supported by CY7C1021CV33-10ZSXAT?

This is a static RAM and does not use a clock signal. Its performance is defined by asynchronous timing parameters: tRC = 10 ns minimum cycle time supports up to 100 MHz effective throughput in burst-read scenarios, with no internal clock or PLL circuitry present.

Does CY7C1021CV33-10ZSXAT support battery backup operation?

No. It lacks built-in battery-switching circuitry or NVSRAM functionality. Data retention requires continuous VCC supply; loss of power results in immediate data loss. For non-volatile storage, external EEPROM or FRAM co-location is required.

Can CY7C1021CV33-10ZSXAT be used with 5 V logic interfaces?

No. It is strictly a 3.3 V device with VIH = 2.0 V min and VIL = 0.8 V max. Direct connection to 5 V buses will exceed absolute maximum ratings (VCC + 0.5 V = 3.8 V), risking permanent damage. Level-shifting circuitry is mandatory for 5 V system integration.

Is the ZSXAT package pin-compatible with other CY7C1021CV33 speed grades?

Yes. All CY7C1021CV33 variants-including -10ZSXAT (10 ns), -12ZSXAT (12 ns), and -15ZSXAT (15 ns)-share identical 44-pin SOJ pinout, address/data/control signal mapping, and power pin configuration, enabling drop-in timing upgrades without PCB redesign.