AT25320B-XHL-B

The Microchip AT25320B provides 32,768-bits of Serial Electrically-Erasable Programmable Read-Only Memory (EEPROM) organized as 4,096 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT25320B is available in space-saving 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead UDFN, 8-lead XDFN, and 8-ball VFBGA packages. The AT25320B is enabled through the Chip Select pin (CS) and accessed via a 3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All programming cycles are completely self-timed, and no separate erase cycle is required before Write. Block Write Protection is enabled by programming the status register with one of four blocks of write protection. Separate Program Enable and Program Disable instructions are provided for additional data protection. Hardware data protection is provided via the WP pin to protect against inadvertent write attempts to the status register. The HOLD pin may be used to suspend any serial communication without resetting the serial sequence.

• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
  • Describes Mode 0 Operation
• Low-voltage and standard-voltage Operation ?
  • 1.8V (VCC = 1.8V to 5.5V)
• 20MHz Clock Rate (5V)
• 32-byte Page Mode
• Block Write Protection ?
  • Protect 1/4, 1/2, or Entire Array
• Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data Protection
• Self-timed Write Cycle (5ms Max)
• High Reliability ?
  • Endurance: 1,000,000 Write Cycles ?
  • Data Retention: 100 Years
• Green (Pb/Halide-free/RoHS Compliant) Packaging Options
• Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers