Datasheet Summary
19-6295; Rev 6/12
DS1218 Nonvolatile Controller
Features
- Converts CMOS RAM into nonvolatile memories
- Unconditionally write protects when VCC is out of tolerance
- Automatically switches to battery when power fail occurs
- Space saving 8-pin PDIP or 8-pin 150 mil SO Packages
- Consumes less than 100nA of battery current
PIN ASSIGNMENT
VCCO NC NC
1 2 3 4
8 VCCI 7 VBAT 6 CEO 5 CEI
PIN DESCRIPTION
VCCI
- Input +5 Volt Supply
VCCO
- RAM Power (VCC) Supply
- Chip Enable Input NC
- No Connection
VBAT GND
- Chip Enable Output
- + Battery
- Ground
DESCRIPTION
The DS1218 is a CMOS circuit which solves the application problems of converting CMOS RAM into nonvolatile...