Microchip Technology AT24C08-10PC

Overview

AT24C08-10PC from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 100 kHz I²C bus compatibility, write-protect pin for hardware data protection, and 16-byte page write capability. It serves as nonvolatile configuration storage in microcontroller-based systems requiring low-power, space-constrained embedded memory.

For engineers reviewing the AT24C08-10PC datasheet, AT24C08-10PC pinout, AT24C08-10PC application, or AT24C08-10PC equivalent, key selection criteria include its 2.7V–5.5V operating range, 10 ms max write cycle time, 1 million endurance cycles, 100-year data retention, and compatibility with standard I²C protocol at 100 kHz under low-voltage conditions.

Technical Context

The AT24C08-10PC implements a fixed 8-pin SOIC (8S1), PDIP (8P3), or TSSOP (8T) package with hardwired A2 address input only-A0 and A1 are no-connects-enabling up to two devices on a single I²C bus. Its internal memory is organized into 64 pages of 16 bytes each, supporting both byte and page write modes with automatic address incrementing within pages.

It uses Schmitt-triggered, noise-filtered SDA and SCL inputs, open-drain bidirectional SDA with wire-OR capability, and a dedicated WP pin that disables all writes when pulled high. Standby current is 1.6 µA typical at 2.7V, and it supports I²C timing parameters including tLOW = 4.7 µs and tBUF = 4.7 µs at 100 kHz.

Key Specifications

Pinout & Package

AT24C08-10PC is supplied in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, 1.27 mm pitch, body size 4.9 × 6.0 mm. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-001BA standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C08-10PI, the AT24C08-10PC trades extended temperature support for lower cost and commercial qualification; compared with M24C08-RMN6TP, it offers simpler address pin routing (only A2 used) but fewer concurrent bus nodes.

Availability

AT24C08-10PC is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, consumer appliance settings retention, and automotive BCM trim memory applications requiring stable component supply across multi-year production cycles.

Supply support for AT24C08-10PC 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 technical and manufacturing continuity for the AT24Cxx EEPROM family. The company specializes in secure, reliable microcontrollers and memory solutions for industrial and automotive markets.

The AT24C08-10PC belongs to Microchip's legacy serial EEPROM product line, designed specifically for robust, low-power, I²C-compatible nonvolatile storage in cost-sensitive embedded systems with constrained board space.

FAQ

What is the maximum I²C clock frequency supported by the AT24C08-10PC?

The AT24C08-10PC supports up to 100 kHz I²C clock frequency under its 2.7V–5.5V operating range. This limit applies specifically to the -2.7 suffix variant; higher-speed 400 kHz operation requires the standard 5V-rated AT24C08-10PC (no suffix). Timing compliance depends on bus capacitance, pull-up strength, and ambient temperature.

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

Up to two AT24C08-10PC devices can operate on a single I²C bus. This is because only the A2 pin is used for device addressing (A0 and A1 are NC), yielding two possible 7-bit slave addresses: 1010000b and 1010001b. Adding more requires alternate addressing schemes or multiplexing.

Does the AT24C08-10PC require external pull-up resistors on SDA and SCL lines?

Yes, the AT24C08-10PC requires external pull-up resistors on both SDA and SCL lines. Its SDA pin is open-drain and SCL is input-only; typical values are 4.7 kΩ to VCC. Incorrect or missing pull-ups cause communication failure, especially during write acknowledge polling.

What happens to the AT24C08-10PC during a power interruption mid-write?

If power fails during an AT24C08-10PC write cycle, the internal write operation halts and the addressed byte or page remains unmodified. Upon power restoration, the device resumes normal operation - no corruption occurs due to its EEPROM architecture and built-in write-cycle abort safety.

Can the AT24C08-10PC replace the AT24C04-10PC in an existing design?

The AT24C08-10PC is pin-compatible and electrically compatible with the AT24C04-10PC, but provides double the memory (8K vs. 4K) and uses only A2 for addressing (A0/A1 are NC vs. A2/A1 active on AT24C04). Firmware must handle the larger address space and verify page boundaries during writes.