Microchip Technology AT24C512-10TI-1.8

Overview

AT24C512-10TI-1.8 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage operation at V_CC = 1.8 V to 3.6 V, supporting 100 kHz clock frequency, 128-byte page write mode, and hardware/software write protection via the WP pin - deployed in industrial sensor nodes and battery-powered IoT edge devices.

For engineers reviewing the AT24C512-10TI-1.8 datasheet, AT24C512-10TI-1.8 pinout, AT24C512-10TI-1.8 application, or AT24C512-10TI-1.8 equivalent, key selection criteria include 1.8 V supply compatibility, -40°C to +85°C industrial temperature range, 100,000 write cycles endurance, 40-year data retention, and 8-pin PDIP/SOIC/LAP/dBGA package options with validated I²C timing compliance.

Technical Context

The AT24C512-10TI-1.8 implements a two-wire (I²C) serial interface with Schmitt-triggered, noise-filtered inputs and open-drain SDA output compatible with standard I²C bus protocols. It uses hardwired A0/A1 pins for device addressing, enabling up to four devices on a shared bus.

It supports byte and 128-byte page write operations with self-timed internal write cycles (typ. 5 ms, max 10 ms), automatic address roll-over within pages, and acknowledge polling for write completion detection. The WP pin provides hardware-level write inhibition when driven high, while floating WP defaults to GND via internal pull-down.

Key Specifications

Pinout & Package

AT24C512-10TI-1.8 is supplied in an 8-pin Plastic Dual In-line Package (PDIP), with pin 1 marked by notch or dot. Package dimensions: 9.02 mm × 6.10 mm × 3.30 mm (JEDEC MS-001 BA).

Key Features

Applications

Equivalent & Alternatives

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

Compared with M24C512-RMN6TP and BR24G512FJ-WE2, the AT24C512-10TI-1.8 delivers verified industrial-temperature reliability at lowest system BOM cost and minimal layout complexity - ideal for cost-sensitive, thermally stable industrial controls where 100 kHz I²C bandwidth suffices.

Availability

AT24C512-10TI-1.8 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical wearables requiring stable component supply, long-lifecycle assurance, and consistent 1.8 V EEPROM performance.

Supply support for AT24C512-10TI-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 acquired Atmel in 2016 and maintains full product continuity, quality control, and technical documentation for the AT24C series EEPROMs.

The AT24C512-10TI-1.8 belongs to Microchip's legacy serial EEPROM portfolio, designed specifically for low-voltage, low-power embedded systems requiring robust nonvolatile storage with minimal external components.

FAQ

What is the maximum I²C clock frequency supported by AT24C512-10TI-1.8?

The AT24C512-10TI-1.8 supports up to 100 kHz I²C clock frequency when operated at 1.8 V. This is specified in the AC Characteristics table under fSCL (1.8-volt column). Higher frequencies (400 kHz or 1 MHz) require ≥2.7 V or ≥4.5 V supply respectively - not applicable to the -1.8 suffix variant. AT24C512-10TI-1.8 must be used within its 100 kHz limit to ensure timing compliance and data integrity.

Does AT24C512-10TI-1.8 support page write operations, and what is the page size?

Yes, AT24C512-10TI-1.8 supports 128-byte page write mode, allowing up to 128 bytes to be written in a single I²C transaction. This reduces total write time versus sequential byte writes and is confirmed in the Features section and Memory Organization description. Partial page writes are permitted, and address roll-over occurs at page boundaries - a behavior explicitly defined for AT24C512-10TI-1.8 in the datasheet.

What is the function of the WP pin on AT24C512-10TI-1.8, and how should it be connected?

The WP (Write Protect) pin on AT24C512-10TI-1.8 disables all write operations when pulled high to V_CC; it enables normal read/write when tied to GND. If left unconnected, an internal pull-down defaults WP to GND. For permanent protection, tie WP to V_CC during critical system states - this hardware lock is independent of software commands and applies to the entire memory array of AT24C512-10TI-1.8.

Is AT24C512-10TI-1.8 qualified for industrial temperature operation?

Yes, AT24C512-10TI-1.8 is explicitly rated for -40°C to +85°C operation, as indicated by the "I" in the ordering code (AT24C512-10TI-1.8) and confirmed in the Ordering Information table. This industrial temperature grade is validated per JEDEC JESD22-A108 and supports continuous operation across full range without derating - a key differentiator from commercial-grade variants.

What package types are available for AT24C512-10TI-1.8?

AT24C512-10TI-1.8 is offered in four package options: 8-pin PDIP (8P3), 20-pin SOIC (20S), 8-pin Leadless Array (8C1), and 8-ball dBGA (8U3). All share identical electrical specifications and pin functions. The "TI" suffix denotes industrial temperature grade but does not restrict package choice - each variant is fully interchangeable electrically, though mechanical layout differs per package drawing.