25LC256 IC 资料.pdfVIP

25AA256/25LC256 256K SPI™ Bus Serial EEPROM Device Selection Table Part Number VCC Range Page Size Temp. Ranges Packages 25LC256 2.5-5.5V 64 Byte I, E P, SN, ST, MF 25AA256 1.8-5.5V 64 Byte I P, SN, ST, MF Features Description • Max. clock 10 MHz The Microchip Technology Inc. 25AA256/25LC256 * • Low-power CMOS technology (25XX256 ) are 256k-bit Serial Electrically Erasable - Max. Write Current: 5 mA at 5.5V, 10 MHz PROMs. The memory is accessed via a simple Serial Peripheral Interface™ (SPI™) compatible serial bus. - Read Current: 5 mA at 5.5V, 10 MHz The bus signals required are a clock input (SCK) plus - Standby Current: 1 µA at 5.5V separate data in (SI) and data out (SO) lines. Access to • 32,768 x 8-bit organization the device is controlled through a Chip Select (CS) • 64 byte page input. • Self-timed ERASE and WRITE cycles (5 ms Communication to the device can be paused via the max.) hold pin (HOLD). While the device is paused, • Block write protection transitions on its