Maxim Integrated DS1312
The DS1312 Nonvolatile Controller with Battery Monitor is a CMOS circuit which solves the application problem of converting CMOS RAM into nonvolatile memory. When such a condition is detected, chip enable is inhibited to accomplish write protection and the battery is switched on to supply the RAM with uninterrupted power. 1 of 12 DS1312 In addition to battery-backup support, the DS1312 performs the important function of monitoring the remaining capacity of the lithium battery and providing a warning before the battery reaches end-of-life.| Part No. | DS1312 |
|---|---|
| Datasheet | DS1312 Download |
| Manufacturer |  Maxim Integrated |
| Description | Nonvolatile Controller |
| Buy | Stock & Price |
FEATURES
● Converts CMOS SRAM into nonvolatile memory● Unconditionally write-protects SRAM when VCC is out of tolerance
● Automatically switches to battery backup supply when VCC power failure occurs
● Monitors voltage of a lithium cell and provides advanced warning of impending battery failure
● Signals low-battery condition on active low Battery Warning output signal
● Optional 5% or 10% power-fail detection
● Space-saving 8-pin DIP and SOIC packages
● Optional 16-pin SOIC and 20-pin TSSOP versions reset processor when power failure occurs and hold processor in reset during system power-up
● Industrial temperature range of -40°C to +85°C PIN ASSIGNMENT VCCO VBAT TOL GND 1 2 3 4 8 VCCI 7 BW 6 CEO 5 CEI DS1312 8-Pin DIP (300 mils) VCCO VBAT TOL GND 1 2 3 4 8 VCCI 7 BW 6 CEO 5 CEI DS1312S-2 8-Pin SOIC (150 mils) NC VCCO NC VBAT NC TOL NC GND 1 2 3 4 5 6 7 8 16 NC 15 VCCI 14 RST 13 NC 12 BW 11 CEO 10 NC 9 CEI DS1312S 16-Pin SOIC (300 mils) NC VCCO NC VBAT NC NC TOL NC NC GND 1 2 3 4 5 6...
