Microchip Technology 24FC02T-I/SN

Overview

24FC02T-I/SN from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 1 MHz clock support (down to 1.7V), 5 ms max page write time, and industrial/extended temperature operation (-40°C to +125°C). It serves as nonvolatile configuration storage in embedded controllers, sensor nodes, and power management ICs.

For engineers reviewing the 24FC02T-I/SN datasheet, 24FC02T-I/SN pinout, 24FC02T-I/SN application, or 24FC02T-I/SN equivalent, key selection criteria include its 1.7V–5.5V supply range, 1 µA standby current at I-temp, Schmitt-trigger noise immunity, 8-byte page buffer, and AEC-Q100 qualification for automotive use cases.

Technical Context

The 24FC02T-I/SN implements a two-wire I²C interface with fixed 7-bit device address (1010xxx) and R/W bit control, supporting standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes depending on V_CC. Its internal architecture includes an 8-byte page latch, EEPROM array with HV generator, and dedicated memory control logic managing self-timed erase/write cycles.

It features hardware write-protection via the WP pin (V_CC = full array protection, V_SS = enabled), Schmitt-trigger inputs on SDA/SCL, output slope control to suppress ground bounce, and acknowledge polling for write-cycle completion detection - all operating across -40°C to +125°C with ≤1 µA standby current at I-temp.

Key Specifications

Pinout & Package

24FC02T-I/SN uses an 8-lead SOIC (SN) package with 150 mil body width and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch; pins A0–A2 are unconnected (NC) and may be left floating or tied to V_SS/V_CC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24FC02T-I/SN, the 24AA02T-I/SN trades 1 MHz performance and extended temperature capability for lower cost, while the AT24C02D-SSHM-T matches speed and voltage but omits automotive qualification - making 24FC02T-I/SN the sole choice for AEC-Q100-compliant, high-speed embedded storage.

Availability

24FC02T-I/SN is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.

Supply support for 24FC02T-I/SN 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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24FC02T-I/SN belongs to Microchip's 24XX02 family of serial EEPROMs, engineered for robust nonvolatile storage in space-constrained, low-power, and mission-critical applications across automotive, industrial, and medical markets.

FAQ

What is the maximum I²C clock frequency supported by the 24FC02T-I/SN?

The 24FC02T-I/SN supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, enabling faster configuration reads and writes than standard 400 kHz EEPROMs. This specification is validated per Microchip DS20001709N, Table 1-2, Param. No. 1 (FCLK). At V_CC < 2.5V, the 24FC02T-I/SN maintains 1 MHz operation - unlike the 24AA02 or 24LC02B, which drop to 100 kHz below 2.5V.

Does the 24FC02T-I/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC02T-I/SN requires external pull-up resistors on both SDA and SCL because it uses open-drain outputs. For 1 MHz operation, a 2 kΩ resistor to V_CC is recommended per Microchip DS20001709N, Section 2.2. Lower values (e.g., 1 kΩ) may be needed for longer traces or higher bus capacitance, but must remain within I²C bus timing constraints.

How does the WP pin function on the 24FC02T-I/SN?

The WP (Write-Protect) pin on the 24FC02T-I/SN disables all write operations when tied to V_CC, protecting the full 256-byte memory array from accidental modification. When tied to V_SS, normal read/write access is enabled. This hardware-level protection operates independently of software commands and remains active during power transitions.

Is the 24FC02T-I/SN AEC-Q100 qualified, and what grade does it meet?

Yes, the 24FC02T-I/SN is AEC-Q100 qualified for Grade 1 (−40°C to +125°C), as confirmed in Microchip DS20001709N, Features section. This qualification covers stress testing for temperature cycling, humidity bias, and ESD, making it suitable for under-hood automotive applications such as engine control units and body domain controllers.

What is the endurance and data retention specification for the 24FC02T-I/SN?

The 24FC02T-I/SN guarantees 1,000,000 erase/write cycles and data retention exceeding 200 years at 25°C, per Microchip DS20001709N, Table 1-2 (Param. No. 18) and Features section. These specifications are measured under standard conditions (25°C, 5.5V) and apply to both byte and page write modes.