Microchip Technology 24C00T-I/SN

Overview

24C00T-I/SN from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-overhead nonvolatile storage of calibration data, device IDs, and manufacturing parameters in space-constrained systems. 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.

For engineers reviewing the 24C00T-I/SN datasheet, 24C00T-I/SN pinout, 24C00T-I/SN application, or 24C00T-I/SN equivalent, this page provides verified electrical specs, package mapping to SOIC-8, I²C timing compliance, endurance (1M cycles), and real-world use context for embedded system integration.

Technical Context

The 24C00T-I/SN implements a slave-only I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes without external addressing logic.

Write operations are self-timed with 3 ms typical page write time and automatic V_CC threshold detection (3.8 V nominal) that disables erase/write if supply drops below specification. Acknowledge polling is supported to synchronize host firmware with internal write completion.

Key Specifications

Pinout & Package

24C00T-I/SN is packaged in an 8-pin SOIC (3.90 mm body width), pin-compatible with industry-standard SOIC-8 footprints. The exposed pad variant is not applicable; this part uses standard SOIC with no thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24C00T-I/SN, the 24LC00-I/SN offers broader supply flexibility but identical pinout and timing, while the AT24C01A-PU doubles memory depth at the cost of higher active current and faster clock support - both require no PCB changes but differ in voltage margin and storage scalability.

Availability

24C00T-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device identity storage, and automotive body control module applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 24C00T-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 global provider of microcontrollers, analog, FPGA, and memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and tools.

The 24C00T-I/SN belongs to Microchip's legacy 24XX00 EEPROM family, engineered for minimal footprint, ultra-low standby power, and robust I²C interoperability in cost-sensitive embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the 24C00T-I/SN?

The 24C00T-I/SN supports up to 400 kHz I²C clock frequency when operated within its specified 4.5–5.5 V supply range. This fast-mode capability allows efficient data transfer in time-critical applications while maintaining full backward compatibility with standard 100 kHz I²C systems. Timing parameters such as T_LOW, T_HIGH, and T_SU:DAT are guaranteed across the industrial temperature range.

Does the 24C00T-I/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24C00T-I/SN requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 400 kHz operation, a 2 kΩ pull-up to V_CC is recommended; for 100 kHz, 10 kΩ is typical. These values ensure proper signal rise times and bus noise immunity per I²C specification, and are validated in Microchip's application notes for the 24C00T-I/SN.

How many write cycles can the 24C00T-I/SN endure before failure?

The 24C00T-I/SN is rated for more than 1 million erase/write cycles per memory location. This endurance level is characterized and assured by Microchip across the full industrial temperature range. In practice, this supports daily writes for over 27 years - making it suitable for applications requiring frequent field updates, such as recalibration or usage logging in industrial equipment.

Is the 24C00T-I/SN pin-compatible with other members of the 24XX00 family?

Yes, the 24C00T-I/SN shares identical SOIC-8 pinout and terminal functions with the 24AA00-I/SN and 24LC00-I/SN. All three variants use pins 1–3 and 7 as NC, pin 4 as VSS, pin 5 as SDA, pin 6 as SCL, and pin 8 as VCC. This allows direct substitution in existing designs when voltage or temperature requirements change - provided the new variant's V_CC range and temp grade match system needs.

What is the data retention period for the 24C00T-I/SN at maximum operating temperature?

The 24C00T-I/SN guarantees data retention exceeding 200 years at +85°C ambient temperature - the upper limit of its industrial grade rating. This specification is derived from accelerated life testing and applies to data written under valid operating conditions. It ensures long-term integrity of stored calibration values, serial numbers, or configuration flags in unattended or maintenance-free deployments.