Description
A, B
CE CE0 - CE3
VBAT1 VBAT2
RST VCCI VCCO
RD
WE
DS1221 16-Pin SOIC (300-mil) See Mech.
Features
- Converts CMOS RAMs into nonvolatile memories Data is automatically protected during power loss 2-to-4 decoder provides for up to 4 CMOS RAMs Provides for redundant batteries Test battery condition on power-up Full ±10% operating range Unauthorized access can be prevented with optional security feature 16-pin 0.3-inch DIP saves PC board space Optional 16-pin SOIC surface mount package Optional industrial temperature range of -40°C to +85°C available
PIN.
DS1221 Datasheet
