2Kbit SPI EEPROM in a compact 8-UDFN package
The Microchip AT25020B-MAHL-T is a 2Kbit serial EEPROM with an SPI interface, organized as 256 x 8 bits. It supports a 20 MHz clock frequency and operates from a single 1.8V to 5.5V supply, making it suitable for mixed-voltage designs and battery-powered equipment. The 5ms write cycle time per word or page is a practical limit for non-volatile parameter storage or calibration data in industrial control, metering, and IoT edge nodes.
20 MHz SPI bus — timing margin in a mixed-voltage system
The 20 MHz SPI clock is the headline rating that determines read and write throughput. The 5ms write cycle time is the period during which the device is busy and ignores further commands; the host must poll the status register or wait the full 5ms before issuing the next write.
Package and footprint — 8-UDFN with exposed pad
The AT25020B-MAHL-T comes in an 8-UDFN with exposed pad, supplier package designation 8-UDFN (2x3). The 2x3 mm footprint is a space-saving option for dense designs.
It is ROHS3 compliant.