Infineon Technologies CY62146G-45ZSXA

Overview

CY62146G-45ZSXA from Cypress Semiconductor is an AEC-Q100 qualified automotive-grade 4-Mbit (256K × 16) CMOS static RAM with embedded single-bit error-correcting code (ECC), 45 ns access time, 2.2–3.6 V / 4.5–5.5 V dual-voltage operation, and ultra-low 3.5 µA typical standby current. It serves as fault-tolerant main memory or buffer in engine control units, ADAS domain controllers, and infotainment head units requiring data integrity under harsh thermal conditions.

For engineers reviewing the CY62146G-45ZSXA datasheet, CY62146G-45ZSXA pinout, CY62146G-45ZSXA application, or CY62146G-45ZSXA equivalent, key selection criteria include ECC-enabled reliability at -40°C to +85°C, byte-selectable 16-bit I/O architecture, TSOP II package compatibility, and dual-voltage support for legacy 5 V and modern low-voltage automotive subsystems.

Technical Context

This SRAM implements a synchronous, address-decoded memory array with dedicated row/column decoders, on-die ECC encoder/decoder logic, and TTL-compatible bidirectional I/O buffers. The ECC block detects and corrects single-bit errors in real time during read operations without external intervention.

Control logic supports independent byte write enable via /BHE and /BLE pins, full 16-bit parallel access, and automatic power-down when /CE is deasserted. All I/Os enter high-impedance state during deselect or idle cycles, minimizing bus contention in multi-device systems.

Key Specifications

Pinout & Package

44-pin TSOP II (Thin Small Outline Package, Type II) with 0.8 mm pitch, JEDEC standard footprint, and lead-free finish. Designed for surface-mount reflow assembly and automotive board-level reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV25616BLL-45NLI and AS6C4008-45TIN, CY62146G-45ZSXA uniquely delivers integrated ECC, dual-voltage support, and true 16-bit byte-select capability-making it the only option for AEC-Q100-compliant systems requiring hardware-level data integrity without architectural compromise.

Availability

CY62146G-45ZSXA 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 CY62146G-45ZSXA 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 automotive, industrial, and IoT applications.

CY62146G belongs to the MoBL® Automotive SRAM product line, engineered specifically for fault-tolerant, low-power memory in safety-critical automotive ECUs and ADAS subsystems.

FAQ

Does CY62146G-45ZSXA support automatic error correction during read operations?

Yes. The device performs single-bit error correction in hardware on every read cycle using embedded ECC logic. Detected errors are corrected transparently before data reaches the I/O bus-no software involvement or interrupt generation is required. This correction occurs within the specified 45 ns access time and does not extend read latency.

Can CY62146G-45ZSXA operate at 3.3 V and still meet AEC-Q100 specifications?

Yes. The 2.2–3.6 V operating range includes 3.3 V as a nominal supply voltage. All AEC-Q100 qualification testing-including temperature cycling, HTOL, and ESD-was performed across the full -40°C to +85°C range at VCC = 3.3 V ±10%, and all AC/DC parameters remain guaranteed per datasheet Rev. *C.

What is the function of the NC pins on the 44-pin TSOP II package?

NC (No Connect) pins-specifically pins 1, 22, and 23-are not bonded to the die and serve no electrical function. They are reserved for future pin expansion in higher-density derivatives and must remain unconnected on PCBs using CY62146G-45ZSXA. Routing traces or applying solder to these pins may cause mechanical stress or unintended coupling.

Is data retention guaranteed at 1.0 V across the full automotive temperature range?

Data retention at 1.0 V is specified for operation at -40°C to +85°C, but ICCDR (data retention current) is only guaranteed after initial power-up to VCC(min) and subsequent ramp-down to VDR. The 1.0 V threshold ensures reliable retention during brown-out conditions, and the device maintains stored data indefinitely as long as VCC ≥ 1.0 V and ambient temperature remains within grade limits.