25AA256

25AA256/25LC256 256K SPI Bus Serial EEPROM Device Selection Table Part Number 25LC256 25AA256 VCC Range 2.5-5.5V 1.8-5.5V Page Size 64 Byte 64 Byte Features: Max. Clock 10 MHz Low-Power CMOS Technology: - Max. Write Current: 5 mA at 5.5V, 10 MHz - Read Current: 6 mA at 5.5V, 10 MHz - Standby Current: 1 A at 5.5V 32,768 x 8-bit Organization 64-Byte Page Self-Timed Erase and Write Cycles (5 ms max.) Block Write Protection: - Protect none, 1/4, 1/2 or all of array Built-In Write Protection: - Power-on/off data protection circuitry - Write enable latch - Write-protect pin Sequential Read High Reliability: - Endurance: 1,000,000 erase/write cycles - Data retention: > 200 years - ESD protection: > 4000V Temperature Ranges Supported: - Industrial (I): - Automotive (E): -40C to +85C -40°C to +125°C Pb-Free and RoHS Compliant Pin Function Table Name Function CS SO WP VSS SI SCK HOLD VCC Chip Select Input Serial Data Output Write-Protect Ground Serial Data Input Serial Clock Input Hold Input Supply Voltage * 25XX256 is used in this document as a generic part number for the 25AA256/25LC256 devices. Temp. Ranges I, E I, E Packages P, SN, SM, ST, MF P, SN, SM, ST, MF Description: The Microchip Technology Inc. 25AA256/25LC256 (25XX256*) are 256 Kbit Serial Electrically Erasable PROMs. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus ...