AT24CM01-XHD-T

AT24CM01-XHD-T is a 1-kbit I2C serial EEPROM from Atmel/Microchip’s CryptoMemory family. It provides 128 × 8 nonvolatile storage plus hardware-based security features for authentication and anti-counterfeiting. The CM designation indicates CryptoMemory functionality, and XHD-T denotes the small 8-pin package (tape‑and‑reel). The device operates from 1.8 to 5.5 V and uses a two-wire I2C interface (SCL/SDA) with a configurable address. It supports standard EEPROM operations: byte and 8-byte pages, plus random or sequential reads. Data is retained over years with high memory endurance, suitable for secure data storage. Applications include secure IDs, anti-counterfeit tagging, asset tracking, and tamper‑evident storage. For exact electrical specs, timing, security options, and programming details, refer to the latest datasheet from Microchip/Atmel.

Equivalent parts (1-kbit I2C 2-wire EEPROMs) to AT24CM01-XHD-T include: ST M24C01-W; Microchip 24AA01/24LC01B/24C01; On Semiconductor CAT24C01 (and CAT24C02); Fudan Micro FM24C01B; Giantec GT24C01. These are pin-compatible, I2C 1Kb serial EEPROMS. Always verify exact package (XHD/T) and datasheet/end-of-life before substitution.

Concise features of AT24CM01-XHD-T:
- 1 Mbit (128 kB) I2C two‑wire serial EEPROM
- I2C interface with standard/fast mode operation
- Random read, sequential read, and page write access
- Page write capability for efficient multi-byte writes
- Endurance: typically 1,000,000 write cycles; Data retention: decades
- Low‑power operation with power-down/standby modes
- Hardware write protection and software write enable controls
- Industrial temperature range (extended/industrial variants) and RoHS Pb‑free
- Package options: 8‑lead, including XHD/T variants (tape-and-reel/package options)
Note: precise page size, voltage range, and exact temp specification can vary by vendor revision; consult the latest datasheet for exact figures.

- Pin count: 8 pins
- Function: 1-kbit I2C serial EEPROM (128 × 8) with a two‑wire I2C interface. Pins include VCC, GND, SDA, SCL, WP, and three address pins A0–A2 to set the I2C address.

- Manufacturer: Microchip Technology (formerly Atmel Corporation).
- What kind of company: A global semiconductor company that designs and manufactures memory devices (like EEPROMs), microcontrollers, and other integrated circuits.

AT24CM01-XHD-T is a small I2C 1Kb EEPROM with extended temperature range. Typical application areas include:
- Automotive ECUs and body electronics for calibration data, configuration parameters, and device IDs (extended-temp grade).
- Industrial equipment and IoT sensors for non-volatile configuration data and short event logs.
- Consumer electronics (cameras, wearables, appliances) for user preferences and calibration constants.
- Any system needing small, non-volatile memory via I2C/SMBus with wide temperature tolerance for harsh environments.

8-pin XHD package, i.e., TSSOP-8 (SOP-8) footprint, with Tape & Reel (-T).