Description
The Microchip Technology Inc. 24LC09 is an 8 Kbit Electrically Erasable PROM (EEPROM) designed to meet the Advanced Communication Riser Special Interest Group (ACR-SIG). The device is organized as four blocks of 256 x 8-bit memory that supports the 2- wire serial interface with a special address: 1011. Low voltage design permits operation down to 2.5 volts with typical standby and active currents of only 5 µA and 1 mA, respectively. The 24LC09 also has a page-write capability for up to 16 bytes of data. The 24LC09 is available in the standard 8-pin DIP, 8-lead surface mount SOIC packages.

Features
• Supports ACR riser card specification
   - 2-wire ACR serial bus interface
   - Address: 1011
• Single supply with operation down to 2.5V
• Low power CMOS technology
   - 1 mA active current typical
   - 500 nA standby current typical at 5V
• Organized as four blocks of 256 bytes
   (4 x 256 x 8)
• Schmitt trigger, filtered inputs for noise
   suppression
• Output slope control to eliminate ground bounce
• 400 kHz Capability (2.5 to 5.5 Volts)
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 16 bytes
• 2 ms typical write cycle time for page-write
• Hardware write protect for entire memory
• Can be operated as a serial ROM
• Factory programming (QTP) available
• ESD protection > 4,000V
• 1,000,000 erase/write cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP, 8-lead SOIC packages
• Available temperature ranges:
   - Industrial (I): -40°C to +85°C