Low-Current I虏C RTCs for High-ESR Crystals
Low-Current SPI/3-Wire RTCs
Low-Voltage SPI/3-Wire RTCs with Trickle Charger
I虏C Serial Real-Time Clock
I虏C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger...
Low-Voltage SPI/3-Wire RTCs with Trickle Charger