AT25M01 SPI Serial EEPROM 1-Mbit (131,072 x 8) DATASHEET Features Serial Peripheral Interface (SPI) Compatible Supports SPI Modes 0 (0,0) and 3 (1,1) Datasheet Describes Mode 0 Operation Low-voltage Operation V = 1.7V to 5.5V CC High Frequency Operation 20MHz Clock Rate Capable from 4.5V to 5.5V V CC 10MHz Clock Rate Capable from 2.5V to 5.5V V CC 5MHz Clock Rate Capable from 1.7V to 5.5V V CC 256-byte Page Mode and Byte Write Operation Supported Block Write Protection Protect , , 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 Package Options (Pb/Halide-free/RoHS Compliant) 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, and 8-ball WLCSP Die Sales Options: Wafer Form, Waffle Pack, and Bumped Die Description The Atmel AT25M01 provides 1,048,576 bits of Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) organized as 131,072 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 AT25M01 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 top , top or entire array 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. Atmel-8824E-SEEPROM-AT25M01-Datasheet 0520161. Pin Configurations Figure 1. Pin Configurations 8-lead SOIC 8-ball WLCSP Pin Name Function CS Chip Select V CC SI 8 1 CS V CC SO Serial Data Output SCK 7 2 SO HOLD WP Write Protect HOLD WP 3 6 WP SCK SO GND Ground 4 5 GND SI CS GND SI Serial Data Input SCK Serial Data Clock Top View Bottom View HOLD Suspends Serial Input * Note: Drawings are not to scale. V Device Power Supply CC 2. Absolute Maximum Ratings* *Notice: Stresses beyond those listed under Absolute Operating Temperature -55C to +125C Maximum Ratings may cause permanent damage Storage Temperature -65C to +150C to the device. This is a stress rating only and functional operation of the device at these or any Voltage on Any Pin other conditions beyond those indicated in the with Respect to Ground -1.0V to +7.0V operational sections of this specification is not implied. Exposure to absolute maximum rating Maximum Operating Voltage . 6.25V conditions for extended periods may affect device reliability. DC Output Current .5.0mA 2 AT25M01 DATASHEET Atmel-8824E-SEEPROM-AT25M01-Datasheet 052016