DS1343 rtcs equivalent, (ds1343 / ds1344) low-current spi/3-wire rtcs.
S Low Timekeeping Current of 250nA (typ) S Compatible with Crystal ESR Up to 100kI S Versions Available to Support Either 6pF or 12.5pF Crystals S RTC Counts Seconds,.
Medical Handheld Devices
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Typical Operating Circuit
VCC
Telematics Embedded Timestamping
RPU
VCC I.
The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source. The devices also support high-ESR crystals, broadening the pool of usable.
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