Microchip Technology 24FC01T-E/OT36KVAO

Overview

24FC01T-E/OT36KVAO from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM optimized for low-voltage, high-reliability embedded storage. It operates from 1.7V to 5.5V, supports up to 1 MHz I²C clock frequency, features hardware write-protection via the WP pin, and delivers ≤1 µA standby current at extended temperature (–40°C to +125°C). It is used in industrial sensor calibration data retention and automotive infotainment configuration storage.

For engineers reviewing the 24FC01T-E/OT36KVAO datasheet, 24FC01T-E/OT36KVAO pinout, 24FC01T-E/OT36KVAO application, or 24FC01T-E/OT36KVAO equivalent, key selection criteria include its 1 MHz I²C speed at 1.7V operation, E-temp qualification, 8-byte page write buffer, Schmitt-trigger noise immunity on SDA/SCL, and TDFN-8 (2×3 mm) package with exposed pad.

Technical Context

The 24FC01T-E/OT36KVAO implements a true 2-wire I²C slave interface with fixed 7-bit address prefix '1010', no A0–A2 addressing bits (internally unconnected), and R/W bit-controlled read/write mode selection. Its internal architecture includes an 8-byte page latch, HV generator for EEPROM programming, and memory control logic that enforces self-timed erase/write cycles without external timing constraints.

It uses Schmitt-trigger inputs and output slope control to suppress bus noise and eliminate ground bounce during transitions. Acknowledge polling is supported to detect write completion, and all I²C timing parameters-including THD:STA (250 ns), TSU:DAT (50 ns), and TAA (450 ns)-are fully specified for 1.7V–5.5V operation at extended temperature.

Key Specifications

Pinout & Package

24FC01T-E/OT36KVAO is packaged in an 8-lead TDFN (2 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is marked by chamfered corner; exposed pad may be connected to VSS or left floating per layout requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA01T-I/OT and AT24C01D-SSHM-T, the 24FC01T-E/OT36KVAO uniquely combines 1 MHz operation at 1.7V, AEC-Q100 Grade 1 qualification, and TDFN-8 packaging - making it the only option for compact, high-speed, automotive-grade EEPROM integration without layout or thermal derating compromises.

Availability

24FC01T-E/OT36KVAO is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive infotainment configuration, and medical diagnostic log storage requiring stable component supply across extended temperature and long product lifecycles.

Supply support for 24FC01T-E/OT36KVAO 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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.

The 24FC01T-E/OT36KVAO belongs to Microchip's 24XX01 family of I²C serial EEPROMs, designed specifically for ultra-low-power, high-reliability nonvolatile storage in space-constrained, thermally demanding applications such as automotive subsystems and industrial IoT endpoints.

FAQ

What is the maximum I²C clock frequency supported by the 24FC01T-E/OT36KVAO?

The 24FC01T-E/OT36KVAO supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range and –40°C to +125°C temperature range. This is confirmed in Table 1-2 of DS20001711L, distinguishing it from the 24AA01 (max 400 kHz) and 24LC01B (max 400 kHz, min 2.5V). The 1 MHz capability enables faster configuration writes in time-sensitive applications without requiring higher VCC.

Does the 24FC01T-E/OT36KVAO require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC01T-E/OT36KVAO requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 1 MHz operation, a 2 kΩ pull-up to VCC is recommended per Section 2.2 of DS20001711L. The value ensures proper rise time (≤1000 ns) while maintaining bus drive strength across temperature and capacitance variations.

How is write protection implemented on the 24FC01T-E/OT36KVAO?

Write protection on the 24FC01T-E/OT36KVAO is controlled by the WP pin: tying WP to VCC disables all write operations (including byte and page writes) while allowing unrestricted reads; tying WP to VSS enables full read/write access. This hardware-level lock is active immediately and requires no command sequence - critical for securing boot configuration in automotive ECUs.

What is the endurance and data retention specification for the 24FC01T-E/OT36KVAO?

The 24FC01T-E/OT36KVAO guarantees a minimum of 1,000,000 erase/write cycles and greater than 200 years of data retention at 25°C, as specified in Table 1-2 (Parameter #18) and Feature list of DS20001711L. These values are characterized and ensured by Microchip's Total Endurance™ model, supporting long-lifecycle deployments in infrastructure and medical equipment.

Is the 24FC01T-E/OT36KVAO AEC-Q100 qualified, and what grade does it meet?

Yes, the 24FC01T-E/OT36KVAO is AEC-Q100 qualified and meets Grade 1 requirements (–40°C to +125°C ambient), as explicitly stated in the Features section of DS20001711L. This qualification covers stress testing for temperature cycling, humidity bias, and ESD - validating its suitability for automotive powertrain, chassis, and body control modules.