Nonvolatile Controller X 4 Chip

The DS1221 Nonvolatile Controller x 4 Chip is a CMOS circuit which solves the application problem of converting CMOS RAMs into nonvolatile Memories Incoming power is monitored for an out-of- tolerance condition. When such a condition is detected, the chip enable outputs are inhibited to accomplish write protection and the battery is switched on to supply RAMs with uninterrupted power. An optional security code prevents unauthorized users from obtaining access to the memory space. The nonvolatile controller/decoder circuitry uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery consumption. By combining the DS1221 with up to four CMOS By Maxim Integrated Products
DS1221 's PackagesDS1221 's pdf datasheet

DS1221 Pinout, Pinouts
DS1221 pinout,Pin out
This is one package pinout of DS1221,If you need more pinouts please download DS1221's pdf datasheet.

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