Description
The Microchip Technology Inc. 25AA128/25LC128 (25XX128*) are 128k-bit 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 separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input.

FEATUREs
• Max. Clock 10 MHz
• Low-power CMOS Technology
   - Max. Write Current: 5 mA at 5.5V, 10 MHz
   - Read Current: 5 mA at 5.5V, 10 MHz
   - Standby Current: 5 μA at 5.5V
• 16,384 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): -40°C to +85°C
   - Automotive (E): -40°C to +125°C
• Standard and Pb-free Packages Available