AT25320/640

The AT25320/640 provides 32768/65536 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits each. There are some features as follows: (1)serial peripheral interface (SPI) compatible; (2)supports spi modes 0 and 3;(3) low voltage and standard voltage operation:  (VCC = 4.5V to 5.5V), 2.7 (VCC = 2.7V to 5.5V), 1.8 (VCC = 1.8V to 3.6V); (4)2 MHz clock rate; (5)32-Byte page mode; (6)block write protection: protect 1/4, 1/2, or entire array; (7)write protect (WP) pin and write disable instructions for: both hardware and software data protection; (8)self-timed write cycle (10 ms max); (9)high reliability: endurance: 1 million cycles, data retention: 100 years; (10)automotive Grade and extended temperature devices available; (11)8-Pin PDIP and JEDEC SOIC packages.

What comes next is about the maximum ratings of AT25320/640: (1)operating temperature: -55°C to +125°C; (2)storage temperature: -65°C to +150°C; (3)voltage on any pin with respect to ground: -1.0V to +7.0V; (4)maximum operating voltage: 6.25V; (5)DC output current: 5.0 mA

The following is about the Pin Configurations of AT25320/640: (1)CS: chip select; (2)SCK: serial data clock; (3)SI: serial data input; (4)SO: serial data output; (5)GND: ground; (6)VCC: power supply; (7)WP: write protect; (8)HOLD: suspends serial input.