Microchip Technology 24AA00-I/SN

Overview

24AA00-I/SN 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 from 1.8 V to 5.5 V, draws only 500 µA typical read current and 100 nA typical standby current, and supports 100 kHz/400 kHz clock rates in industrial temperature range (–40°C to +85°C).

For engineers reviewing the 24AA00-I/SN datasheet, 24AA00-I/SN pinout, 24AA00-I/SN application, or 24AA00-I/SN equivalent, key selection criteria include its ultra-low 1.8 V operation, 100 nA standby current, Schmitt-trigger noise immunity on SDA/SCL, self-timed write cycle (3 ms typical), and compatibility with standard I²C bus timing and addressing.

Technical Context

The 24AA00-I/SN implements a slave-only I²C interface with fixed 4-bit device code '1010' and three don't-care address bits, enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and retains position across current-address reads.

It uses on-chip charge-pump voltage generation for EEPROM programming, includes VCC threshold detection (disables write below 1.5 V), and features integrated input filters and slope control to suppress ground bounce and EMI-induced glitches on SDA/SCL lines.

Key Specifications

Pinout & Package

24AA00-I/SN is supplied in an 8-pin SOIC package (3.90 mm body width, JEDEC MS-012AA), with pin 1 marked by notch or bevel. The package is Pb-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC00-I/SN and AT24C01A-PU, the 24AA00-I/SN uniquely delivers 1.8 V operation with 100 nA standby current and factory programming support - making it the optimal choice for battery-powered, space-constrained, and high-volume manufacturing scenarios demanding minimal power and pre-configured data.

Availability

24AA00-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device ID storage, and consumer electronics manufacturing data applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 24AA00-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 24AA00-I/SN belongs to Microchip's legacy 24XX00 family of ultra-small serial EEPROMs, engineered specifically for cost-sensitive, low-power applications where minimal die area and minimal quiescent current are primary design constraints.

FAQ

What is the minimum operating voltage for the 24AA00-I/SN?

The 24AA00-I/SN operates down to 1.8 V DC, verified across the full industrial temperature range (–40°C to +85°C). Below 1.5 V, its internal write logic is disabled by a VCC threshold detector to prevent incomplete or corrupted EEPROM writes. This makes the 24AA00-I/SN suitable for direct integration with 1.8 V microcontrollers and energy-harvesting systems where supply voltage may dip near nominal limits.

Does the 24AA00-I/SN support standard I²C addressing and protocol?

Yes, the 24AA00-I/SN implements a fully compliant I²C slave interface with a fixed 7-bit address of 1010xxx (where xxx are "don't care" bits), supporting up to eight devices on a single bus. It responds to START/STOP conditions, acknowledges address and data bytes, and adheres to standard I²C timing specifications for both 100 kHz and 400 kHz modes as defined in the DS20001178J datasheet. The 24AA00-I/SN does not generate ACK during internal write cycles - a behavior leveraged for ACK polling.

How many write cycles can the 24AA00-I/SN endure, and what is its data retention period?

The 24AA00-I/SN is rated for more than 1 million erase/write cycles and guarantees data retention exceeding 200 years under normal operating conditions. These figures are based on characterization and accelerated life testing per Microchip's Total Endurance™ model. Field reliability is further enhanced by built-in write-cycle inhibition below 1.5 V and automatic write completion detection via ACK polling - ensuring each 24AA00-I/SN write operation either completes fully or aborts cleanly.

What package type is used for the 24AA00-I/SN, and are there pin-compatible alternatives?

The 24AA00-I/SN is packaged in an 8-pin SOIC (3.90 mm body width, JEDEC MS-012AA), with pins 1–3 and 7 designated as NC, pin 4 as VSS, pin 5 as SDA, pin 6 as SCL, and pin 8 as VCC. It shares identical pinout and footprint with other members of the 24XX00 family (e.g., 24LC00-I/SN, 24C00-I/SN) in SOIC packaging - enabling drop-in substitution where voltage and temperature requirements align. No pin-compatible alternatives exist outside this family due to the unique 5-pin SOT-23 and DFN variants using different pin counts and layouts.

Can the 24AA00-I/SN be used in automotive applications?

The 24AA00-I/SN is specified for the industrial temperature range (–40°C to +85°C), not the extended automotive grade (–40°C to +125°C). While it may function in benign under-hood locations, Microchip does not qualify or guarantee the 24AA00-I/SN for AEC-Q100 compliance or automotive safety-critical systems. For automotive body control or infotainment modules requiring 125°C operation, the pin-compatible 24C00-E/SN (rated –40°C to +125°C) is the appropriate variant - though it requires minimum 4.5 V supply and lacks 1.8 V capability.