AT24C64B 2 I C-Compatible (2-Wire) Serial EEPROM 64K (8192 x 8) DATASHEET Features Low-voltage and Standard-voltage Operation 2.7V (V = 2.7V to 5.5V) CC 1.8V (V = 1.8V to 5.5V) CC Low-power Devices (I = 6A at 5.5V) Available SB Internally Organized 8192 x 8 2-Wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bi-directional Data Transfer Protocol 400kHz Clock Rate Write Protect Pin for Hardware Data Protection 32-byte Page Write Mode (Partial Page Writes Allowed) Self-Timed Write Cycle (5ms max) High Reliability Endurance: 1,000,000 Write Cycles Data Retention: 100 Years Lead-free/Halogen-free Devices Available 8-lead JEDEC SOIC and TSSOP Packages Description The Atmel AT24C64B provides 65,536 bits of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) organized as 8,192 words of 8 bits each. The devices cascadable feature allows up to eight devices to share a common 2-Wire bus. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT24C64B is available in space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-Wire serial interface. In addition, the entire family is available in 2.7V (2.7 to 5.5V) and 1.8V (1.8 to 5.5V) versions. Atmel-3350G-SEEPROM-AT24C64B-Datasheet 0120171. Pin Configurations Table 1-1. Pin Configurations 8-lead SOIC 8-lead TSSOP Pin Name Function (Top View) (Top View) A A Address Inputs 0 2 A 1 8 VCC 0 A0 1 8 VCC A 2 WP 1 7 A 2 7 WP 1 GND Ground A 3 6 SCL 2 A 3 6 SCL 2 4 GND 5 SDA SCL Serial Clock Input GND 4 5 SDA SDA Serial Data WP Write Protect V Power Supply CC 2. Absolute Maximum Ratings* *Notice: Stresses beyond those listed under Absolute Operating Temperature .-55 to +125C Maximum Ratings may cause permanent damage Storage Temperature .-65 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 . -1V to +7V 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 5mA 2 AT24C64B DATASHEET Atmel-3350G-SEEPROM-AT24C64B-Datasheet 012017