Microchip Technology AT24C512N-10SI-1.8

Overview

AT24C512N-10SI-1.8 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8 V to 3.6 V, supports up to 100 kHz I²C clocking at 1.8 V, features hardware write protection via the WP pin, and delivers 100,000 write cycles with 40-year data retention. It is used in industrial sensor nodes for nonvolatile configuration storage.

For engineers reviewing the AT24C512N-10SI-1.8 datasheet, AT24C512N-10SI-1.8 pinout, AT24C512N-10SI-1.8 application, or AT24C512N-10SI-1.8 equivalent, this page provides verified electrical specs, JEDEC SOIC-8 package details, I²C timing constraints at 1.8 V, page-write capability, and validated alternative parts for supply continuity and design flexibility.

Technical Context

The AT24C512N-10SI-1.8 implements a standard two-wire (I²C) interface with open-drain SDA and edge-triggered SCL, supporting cascaded addressing via A0/A1 pins for up to four devices on one bus. Its internal architecture organizes memory as 512 pages of 128 bytes each, enabling partial-page writes without wraparound within the same page boundary.

It uses Schmitt-trigger inputs and noise-filtered logic to maintain reliable communication in electrically noisy environments. The device enters low-power standby mode after STOP condition receipt and supports acknowledge polling to detect write completion-critical for deterministic firmware timing in real-time control loops.

Key Specifications

Pinout & Package

AT24C512N-10SI-1.8 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide body, surface-mount package measuring 5.79–6.20 mm × 4.80–5.00 mm × 1.35–1.75 mm (L × W × H). Pin 1 is marked with a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C512N-10SI-1.8, M95M02-DRMN6TP/K offers higher density and broader voltage range but mandates SPI redesign and lacks hardware write protection, while BR24G512FJ-WE2 matches pinout, protocol, and functionality while extending temperature range and I²C speed-making it ideal for automotive upgrades.

Availability

AT24C512N-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, smart energy meter bootloader storage, and automotive body control module settings requiring stable component supply across long-lifecycle programs.

Supply support for AT24C512N-10SI-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 nonvolatile memory solutions, with a focus on embedded control and connectivity.

The AT24C512N-10SI-1.8 belongs to Microchip's AT24Cxx serial EEPROM product line, designed specifically for low-voltage, space-constrained industrial and automotive applications requiring reliable, long-life nonvolatile storage.

FAQ

What is the maximum I²C clock frequency supported by AT24C512N-10SI-1.8 at 1.8 V?

The AT24C512N-10SI-1.8 supports a maximum I²C clock frequency of 100 kHz when operating at 1.8 V. This value is specified in the AC Characteristics table under "1.8-volt" conditions and reflects the timing margin required for reliable communication at minimum supply voltage. Exceeding this frequency may result in setup/hold violations and data corruption.

Does AT24C512N-10SI-1.8 support hardware write protection, and how is it implemented?

Yes, AT24C512N-10SI-1.8 supports hardware write protection via its dedicated WP (Write Protect) pin. When WP is tied to VCC, all write operations-including byte, page, and erase-are inhibited. When WP is grounded, normal write functionality is enabled. If left floating, the pin is internally pulled down to GND, defaulting to write-enabled mode.

What package type is used for AT24C512N-10SI-1.8, and what are its key mechanical dimensions?

AT24C512N-10SI-1.8 uses an 8-lead JEDEC SOIC (8S1) package, 0.150" wide. Its nominal dimensions are 5.90 mm length × 4.90 mm width × 1.55 mm height, with 1.27 mm lead pitch. Pin 1 is located at the beveled corner, and the package is RoHS-compliant and halogen-free per ordering code suffix "-1.8".

How many devices can share the same I²C bus with AT24C512N-10SI-1.8, and what enables this capability?

Up to four AT24C512N-10SI-1.8 devices can share a single I²C bus using the A0 and A1 address input pins. These pins configure the two least-significant bits of the 7-bit I²C slave address (base 0x50), allowing unique addressing of 0x50, 0x51, 0x52, and 0x53. Both pins can be hardwired to VCC or GND, or left floating (internally pulled down).

What is the page size and maximum write length per transaction for AT24C512N-10SI-1.8?

The AT24C512N-10SI-1.8 has a page size of 128 bytes. A single page write transaction can write up to 128 consecutive bytes starting from any address aligned to a 128-byte boundary. Attempting to write beyond the page boundary causes automatic rollover to the start of the same page, overwriting earlier data unless explicitly managed in firmware.