DS1210N+

MAXIM INTEGRATED PRODUCTS  DS1210N+  芯片, 控制器, 存储器

The is a non-volatile controller chip in 8 pin DIP package. The non-volatile controller chip is a CMOS circuit which solves the application problem of converting CMOS RAM into non-volatile memory. Incoming power is monitored for an out of tolerance condition. 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. Special circuitry uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery consumption. The 8-pin DIP package keeps PC board real estate requirements to a minimum. By combining the DS1210 non-volatile controller chip with a CMOS memory and batteries, non-volatile RAM operation can be achieved.

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Supply voltage range is 4.5V to 5.5V

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Operating temperature range from -40°C to 85°C

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Unconditionally write protects RAM when VCC is out of tolerance

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Automatically switches to battery backup supply when VCC power failure occurs

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Tests battery condition on power up

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Provides for redundant batteries

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Low forward voltage drop on the VCC switch

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Consumes less than 100nA of battery current