Microchip Technology 24C00T-I/MC

Overview

24C00T-I/MC from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-power, space-constrained applications requiring nonvolatile storage of calibration data, device IDs, or manufacturing parameters. It operates within 4.5–5.5 V, supports industrial temperature range (−40°C to +85°C), features 100 kHz/400 kHz clock compatibility, and delivers typical standby current of 100 nA and read current of 500 µA.

For engineers reviewing the 24C00T-I/MC datasheet, 24C00T-I/MC pinout, 24C00T-I/MC application, or 24C00T-I/MC equivalent, key selection considerations include its 5-pin SOT-23 package, 4.5–5.5 V supply requirement, I²C slave addressing (1010xxx0/1), Schmitt-trigger noise immunity, and self-timed 3 ms write cycle - all critical for embedded sensor nodes, power management ICs, and compact consumer electronics.

Technical Context

The 24C00T-I/MC implements a fixed 128-bit EEPROM array with an internal address pointer that auto-increments during sequential reads. Its I²C interface conforms to standard two-wire protocol with Start/Stop condition detection, ACK polling support, and strict timing compliance (e.g., THIGH ≥ 600 ns at 400 kHz, TLOW ≥ 1300 ns).

It uses on-chip HV generation for erase/write operations, includes VCC threshold detection (disabled below 3.8 V), and integrates Schmitt-trigger inputs with 50 mV hysteresis (VHYS ≥ 0.05 VCC) and input filter spike suppression (TSP ≤ 50 ns) to ensure robust bus operation in electrically noisy environments.

Key Specifications

Pinout & Package

24C00T-I/MC is supplied in a 5-pin SOT-23 package (Microchip drawing C04-028D [OT]), measuring 2.90 mm × 1.60 mm × 1.30 mm, with gull-wing leads and no exposed pad. Pin 1 is SCL, Pin 2 is VSS, Pin 3 is SDA, Pin 4 is NC, and Pin 5 is VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24C00T-I/MC, the 24AA00T-I/MC extends voltage range downward but shares identical pinout and timing; the AT24C01C-SSHM-T increases memory depth while maintaining footprint compatibility - both serve as functional alternatives where capacity or supply constraints differ.

Availability

24C00T-I/MC is available at Aetrix Electronics and suitable for smart sensor calibration, power supply configuration, and consumer device identity applications requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for 24C00T-I/MC 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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24XX00 family - including 24C00T-I/MC - was engineered specifically for cost-sensitive, space-constrained embedded systems needing minimal nonvolatile storage for calibration, identification, and configuration data.

FAQ

What is the operating voltage range of the 24C00T-I/MC?

The 24C00T-I/MC operates strictly within 4.5 V to 5.5 V. Unlike the 24AA00 or 24LC00 variants, it does not support lower voltages such as 3.3 V or 1.8 V. Operation below 4.5 V disables internal programming logic due to its 3.8 V VCC threshold detector, making it unsuitable for mixed-voltage or battery-depleted scenarios. Always verify regulator stability within this window before integrating the 24C00T-I/MC into your design.

Does the 24C00T-I/MC support 400 kHz I²C communication?

Yes, the 24C00T-I/MC fully supports 400 kHz I²C clock frequency under 4.5–5.5 V supply conditions. Its AC characteristics specify minimum THIGH = 600 ns and TLOW = 1300 ns at this rate, aligning with Fast-mode I²C standards. Ensure external pull-up resistors are sized appropriately (e.g., ~2 kΩ for 5 V) and bus capacitance remains ≤400 pF to maintain signal integrity and meet setup/hold timing requirements.

How many write cycles can the 24C00T-I/MC endure?

The 24C00T-I/MC guarantees 1 million erase/write cycles per memory location, validated through characterization (not 100% tested). This endurance enables reliable use in applications requiring periodic updates - such as field calibration or firmware flagging - over multi-year deployments. For high-frequency logging, consider wear-leveling in firmware or selecting higher-density EEPROMs with built-in management.

What is the function of the NC pin on the 24C00T-I/MC?

The NC (No Connect) pin on the 24C00T-I/MC - Pin 4 in the 5-pin SOT-23 package - is internally unconnected and serves no electrical function. It must be left floating with no PCB trace, solder mask opening, or thermal pad connection. Routing or terminating this pin may introduce parasitic coupling or mechanical stress, potentially affecting solder joint reliability or signal integrity on adjacent SDA/SCL lines.

Can the 24C00T-I/MC be used in automotive applications?

No, the 24C00T-I/MC is rated only for the Industrial temperature range (−40°C to +85°C), not the Automotive (−40°C to +125°C) grade. Although the 24C00 family includes E-temp variants (e.g., 24C00-E/MC), the "I" suffix in 24C00T-I/MC explicitly denotes Industrial qualification. For under-hood or dashboard applications requiring AEC-Q100 compliance and extended thermal performance, select the automotive-grade variant or consult Microchip's qualified alternatives.