Microchip Technology AT24C08-10PC-1.8

Overview

AT24C08-10PC-1.8 from Microchip Technology (formerly Atmel) is a 8K-bit (1024 × 8) serial EEPROM IC optimized for low-voltage embedded systems, supporting 1.8V to 5.5V supply operation, 100 kHz I²C bus speed at 1.8V, and hardware write protection via the WP pin. It delivers 1 million write cycles and 100-year data retention in industrial temperature range (–40°C to +85°C), used in firmware parameter storage for smart sensors and power management subsystems.

For engineers reviewing the AT24C08-10PC-1.8 datasheet, AT24C08-10PC-1.8 pinout, AT24C08-10PC-1.8 application, or AT24C08-10PC-1.8 equivalent, key selection criteria include 1.8V minimum VCC compatibility, 16-byte page write capability, SOIC-8 package footprint, and I²C address configuration using A2 only (A0/A1 NC).

Technical Context

The AT24C08-10PC-1.8 implements a standard two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-triggered inputs for noise immunity, and bi-directional data transfer protocol compliant with I²C specification. Its internal architecture organizes memory as 64 pages of 16 bytes each, requiring a 10-bit word address for random access.

Device addressing uses only the A2 pin (A0 and A1 are no-connect), enabling up to two AT24C08 devices on a single bus. Write protection is controlled solely by the WP pin: tied to VCC for full-array lock, GND for normal read/write - no software lock mechanism is present.

Key Specifications

Pinout & Package

AT24C08-10PC-1.8 is supplied in an 8-lead JEDEC SOIC package (package code 8S1), 0.150" wide, with 1.27 mm pitch and gull-wing leads. Pin 1 is marked with a beveled corner or notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C08-10PC-1.8, the AT24C08-10PI-1.8 extends thermal range without altering interface or timing, while M24C08-RMN6TP offers second-source assurance with identical low-voltage page-write performance - both require no PCB changes but differ in qualification documentation and long-term availability forecasting.

Availability

AT24C08-10PC-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body electronics, and portable medical devices requiring stable component supply across multi-year production cycles.

Supply support for AT24C08-10PC-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 systems, and technical support for the AT24Cxx EEPROM family.

The AT24Cxx series was designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage with minimal external components - targeting consumer, industrial, and automotive applications where I²C simplicity and voltage flexibility are critical.

FAQ

What is the minimum operating voltage for AT24C08-10PC-1.8?

The AT24C08-10PC-1.8 operates down to 1.8 V DC, with guaranteed 100 kHz I²C communication, 16-byte page writes, and full read/write functionality at this voltage. Below 1.8 V, timing margins degrade and write operations may fail - the device is not characterized for sub-1.8V use. This makes AT24C08-10PC-1.8 suitable for direct integration with 1.8V microcontrollers without level translation.

How many devices can share the same I²C bus with AT24C08-10PC-1.8?

Up to two AT24C08-10PC-1.8 devices can coexist on a single I²C bus, as only the A2 pin is used for hardware addressing (A0 and A1 are no-connect). Setting A2 to GND or VCC selects one of two possible device addresses (1010000x or 1010001x), enabling dual-device configurations for redundant storage or channel-specific parameter banks in AT24C08-10PC-1.8-based systems.

Does AT24C08-10PC-1.8 support partial page writes?

Yes, AT24C08-10PC-1.8 supports partial page writes: any number of bytes from 1 to 16 can be written within a single 16-byte page boundary without overwriting adjacent data. The internal address counter increments automatically after each byte, and crossing the page boundary causes wraparound to the start of the same page - a documented behavior confirmed in the AT24C08-10PC-1.8 datasheet section "Page Write".

What is the function of the WP pin on AT24C08-10PC-1.8?

The WP (Write Protect) pin on AT24C08-10PC-1.8 provides hardware-level write inhibition: when pulled high to VCC, it disables all write operations to the entire 8K-bit array; when grounded, full read/write access is enabled. This is a physical enable signal - no software command or register setting overrides WP state, making AT24C08-10PC-1.8 suitable for safety-critical parameter locking in certified systems.

Is AT24C08-10PC-1.8 pin-compatible with other AT24Cxx variants?

AT24C08-10PC-1.8 shares identical SOIC-8 pinout and I²C interface with AT24C01A, AT24C02, AT24C04, and AT24C16, but differs in address pin usage: only A2 is active (A0/A1 NC), whereas AT24C02 uses A0–A1 and AT24C04 uses A0–A2. Thus, direct substitution requires verifying address pin wiring - AT24C08-10PC-1.8 is not drop-in compatible without layout review.