AT21CS01 Overview
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.
AT21CS01 Key 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
- Standard Speed and High Speed Mode options
- 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
- 256-bit Security Register
- Self-timed write cycle (5ms max)
- Manufacturer Identification support
