
Catalog
128Kb SPI Serial EEPROM
Key Features
• + 16,384 x 8-bit (128 Kbit)
• + Supports SPI modes 0 and 3
• + Up to 20 MHz clock frequency
• + Self-Timed Erase and Write Cycles (5 ms max.)
• + Read current: 7 mA (Max) at 10 MHz
• + Write current: 7 mA (Max) at 10 MHz
• + Standby current: 3 µA (Max) at 1.8V, 5 µA (Max) at 5 V
• + Block Write Protection: Protect 1/4, 1/2 or Entire Array
• + More than 1 million erase/write cycles
• + Data retention 100 years
• + Temperature Ranges Available
• + Automotive Grade 1: -40°C to 125°C
• + Automotive Grade 2: -40°C to 105°C
• + Automotive Grade 3 / Industrial: -40°C to 85°C
• + Automotive AECQ-100 Qualified1
• + Factory Programming Available
• + Available in standard packages including 8-lead SOIC, and advanced packages including 8-lead TSSOP, 8-lead 2x3 DFN, and 8-ball VFBGA
Description
AI
The Microchip AT25128B is a 128 Kb Serial EEPROM utilizing the
industry standard Serial Peripheral Interface (SPI) compatible serial bus. The
device is organized as one block of 16,384 x 8-bit and is optimized for use in consumer electronics, industrial, medical,
and automotive applications where reliable and dependable nonvolatile memory
storage is essential. Software write protection allows the user to protect ¼,
½, or the entire memory array. A hardware write protect pin is also provided,
which additionally protects against inadvertent writes to the status register.
The EEPROM is available in a variety of space-saving packaging options.