The Microchip 11AAxxx/11LCxxx family of devices are Serial EEPROMs featuring Microchip’s proprietary UNI/O™ Serial Bus.
UNI/O™ Serial EEPROM devices require only one connection to a host Microcontroller as clock and data communications are combined into a single serial bit stream. The result is that UNI/O™ devices require one Microcontroller I/O instead of the 2 to 6 (depending on configuration) that I2C, Microwire and SPI bus EEPROM devices require. To the designer this opens up the possibility of employing a smaller host MCU with fewer I/Os, reducing the MCU cost and allowing for a more compact design.
Feature
- Pre-programmed 32-bit Serial Number
- Unique Across All UID-Family EEPROMs
- Scalable to 48-bit, 64-bit, 128-bit, 256-bit,and other lengths
- Low-Power CMOS Technology: - 1 mA active current, typical - 1 µA standby current (max.)
- 256 x 8 Bit Organization
- Schmitt Trigger Inputs for Noise Suppression
- Output Slope Control to Eliminate Ground Bounce100 kbps Max. Bit Rate – Equivalent to 100 kHz Clock Frequency
- Self-Timed Write Cycle (including Auto-Erase Page-Write Buffer for up to 16 Bytes)
- STATUS Register for Added Control: - Write enable latch bit - Write-In-Progress bit
- Block Write Protection: - Protect none, 1/4, 1/2 or all of array
- Built-in Write Protection: - Power-on/off data protection circuitry - Write enable latch
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4,000V
- 3-lead SOT-23 and 8-lead SOIC Packages
- Available Temperature Ranges: - Industrial (I): -40C to +85C
