Microchip Technology AT24C32AY6-10YH-1.8

Overview

AT24C32AY6-10YH-1.8 from Microchip Technology (formerly Atmel) is a 32K-bit (4096 × 8) two-wire serial EEPROM optimized for ultra-low-voltage operation from 1.8V to 5.5V, featuring 32-byte page write capability, hardware write protection via WP pin, and 400 kHz I²C-compatible interface. It delivers 1 million write cycles and 100-year data retention in an 8-lead Mini-MAP (MLP 2×3 mm, 0.5 mm pitch) package for space-constrained industrial sensor nodes and portable medical devices.

For engineers reviewing the AT24C32AY6-10YH-1.8 datasheet, AT24C32AY6-10YH-1.8 pinout, AT24C32AY6-10YH-1.8 application, or AT24C32AY6-10YH-1.8 equivalent, key selection considerations include its 1.8V minimum supply, 6 µA standby current at 1.8V, 8-lead DFN (8Y6) package footprint, and hardware write-protect functionality - all critical for battery-powered embedded systems requiring nonvolatile configuration storage with robust noise immunity.

Technical Context

The AT24C32AY6-10YH-1.8 implements a standard I²C-compatible two-wire interface with Schmitt-triggered, filtered SDA/SCL inputs for noise suppression, supporting up to 8 devices on a shared bus via A0–A2 address pins. Its internal architecture organizes memory as 128 pages of 32 bytes each, enabling partial-page writes without rollover constraints within the same page boundary.

Write operations are self-timed with a maximum 5 ms cycle time; acknowledge polling allows host microcontrollers to detect completion without fixed delays. The WP pin provides hardware-level write inhibition when tied to VCC, while floating WP is internally pulled down under low-capacitance conditions (<3 pF), ensuring deterministic default behavior in minimal-component designs.

Key Specifications

Pinout & Package

AT24C32AY6-10YH-1.8 is housed in an 8-lead Mini-MAP (MLP 2×3 mm, 0.5 mm pitch) dual-no-lead package (JEDEC MO-229 compliant), with exposed thermal pad for improved power dissipation in thermally constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with AT24C32C-SSHM-T and BR24G32FJ-3GE2, the AT24C32AY6-10YH-1.8 uniquely combines the smallest 2×3 mm DFN footprint with guaranteed 1.8V operation and hardware write protection - making it optimal for next-generation wearables and miniaturized industrial modules where board space and low-voltage robustness are non-negotiable.

Availability

AT24C32AY6-10YH-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, portable medical device settings, automotive body control modules, and smart energy meter configuration requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for AT24C32AY6-10YH-1.8 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

Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad industrial and automotive qualification capabilities.

The AT24C32A family was designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing voltage flexibility, noise immunity, and long-term data integrity in harsh operating environments.

FAQ

What is the minimum operating voltage for the AT24C32AY6-10YH-1.8?

The AT24C32AY6-10YH-1.8 operates down to 1.8V, as confirmed by its "–1.8" suffix and DC characteristics table specifying VCC1 min = 1.8V. This enables direct integration with 1.8V I/O domains without level-shifting circuitry, reducing BOM cost and PCB complexity in ultra-low-power designs.

Does the AT24C32AY6-10YH-1.8 support page write operations?

Yes, the AT24C32AY6-10YH-1.8 supports 32-byte page write mode, allowing up to 32 sequential bytes to be written in a single I²C transaction. This significantly improves write throughput compared to byte-write mode and is explicitly documented in the Features section and Memory Organization chapter of the datasheet.

What package type is used for the AT24C32AY6-10YH-1.8?

The AT24C32AY6-10YH-1.8 uses an 8-lead Mini-MAP (MLP 2×3 mm, 0.5 mm pitch) dual-no-lead package, designated as "8Y6" in Microchip's ordering information. This compact DFN-style package features an exposed thermal pad and complies with JEDEC MO-229 standards for automated assembly.

How does the write protect (WP) pin function on the AT24C32AY6-10YH-1.8?

When the WP pin of the AT24C32AY6-10YH-1.8 is driven high to VCC, all write operations to memory are inhibited. If left floating, the pin is internally pulled down to GND under low-capacitance conditions (<3 pF), enabling writes by default - a design choice that simplifies schematics in cost-sensitive applications.

What is the endurance rating of the AT24C32AY6-10YH-1.8?

The AT24C32AY6-10YH-1.8 is rated for 1 million write cycles per memory location, as specified in the Absolute Maximum Ratings and AC Characteristics tables. This endurance level supports frequent parameter updates in applications such as data loggers, programmable logic controllers, and field-configurable instrumentation.