Serial SRAM Features
• Unlimited Reads/Unlimited Writes:
- Standard serial SRAM protocol
- Symmetrical timing for reads and writes
• SRAM Array:
- 65,536 x 8 bit (48L512)
- 131,072 x 8 bit (48LM01)
• High-Speed SPI Interface:
- Up to 66 MHz
- Schmitt Trigger inputs for noise suppression
• Low-Power CMOS Technology:
- Active current: 5 mA (maximum)
- Standby current: 200 μA (at 85°C maximum)
- Hibernate current: 3 μA (at 85°C maximum)

Hidden EEPROM Backup Features
• Cell-Based Nonvolatile Backup:
- Mirrors SRAM array cell-for-cell
- Transfers all data to/from SRAM cells in
parallel (all cells at same time)
• Invisible-to-User Data Transfers:
- VCC level monitored inside device
- SRAM automatically saved on power disrupt
- SRAM automatically restored on VCC return
• 100,000 Backups Minimum (at 85°C)
• 100 Years Retention (at 55°C)

Other Features of the 48L512/48LM01
• Operating Voltage Range: 2.7V-3.6V
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
• ESD Protection: >2,000V