AT21CS01 Datasheet | Atmel

Features - Low voltage operation ̶ Device is self-powered via 1.7V to 3.6V pull-up voltage on the SI/O line - Internally organized as 128 words of 8 bits each (1-Kbit) - Single-Wire serial interface with I2C protocol structure ̶ Device munication is achieved through a single I/O pin - Standard Speed and High Speed Mode options ̶ 15.4kbps maximum bit rate in Standard Speed Mode ̶ 125kbps maximum bit rate in High Speed Mode - 8-byte Page Write or single Byte Writes allowed - Discovery Response feature for quick detection of devices on the bus - ROM Zone support ̶ Device is segmented into four 256-bit zones, each of which can be permanently made read-only (ROM) - 256-bit Security Register ̶ Lower 8 bytes contains a factory programmed, read-only, 64-bit Serial Number that is unique to all Atmel Single-Wire products ̶ Upper 16 bytes are user-programmable and permanently lockable - Self-timed write cycle (5ms max) - Manufacturer Identification support ̶ Device responds with unique value for Atmel as well as density and revision information - High reliability ̶ Endurance: 1,000,000 write cycles ̶ Data retention: 100 years ̶ IEC 61000-4-2 Level 4 ESD pliant (±8k V Contact, ±15k V Air Discharge) - Green (Lead-free/Halide-free/Ro HS pliant) package options ̶ 8-lead SOIC, 3-lead SOT23, and 4-ball Thin WLCSP - Die sale options in wafer form and tape and reel Description The Atmel® AT21CS01 provides 1,024 bits of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 128 words of 8 bits each. The device’s software addressing scheme allows up to eight devices to share a mon Single-Wire bus. The device is optimized for use in many industrial and mercial applications where low-power and low-voltage operation are essential. Some applications examples include analog sensor calibration data storage, ink and toner printer cartridge identification, and management of after-market consumables. The device is available in space-saving package options and operates...