Real time clock IC integrates up to 100h of power back-up on chip
14.00
The EnerChip RTC integrates a bare die real time clock (RTC), an EnerChip battery and a PMIC device all in a surface mount technology package that withstands reflow solder processes.
Drawing only 35nA, the RTC chip can operate on the EnerChip battery back-up power from 30 to over 100 hours per charge, with thousands of recharge cycles, says the manufacturer.
The CBC34123 combines an NXP RTC with the EnerChip and PMIC for 30 hours power holdover and supports SPI-bus. The CBC34803 that combines an Ambiq RTC with the EnerChip and PMIC for 100 hours power holdover and supports I2C-bus, and the CBC34813 that combines an Ambiq RTC with the EnerChip and PMIC for 100 hours power holdover and supports SPI-bus.
The various EnerChip RTC configurations support: Alarm and timer functions, General Purpose Outputs, XT Oscillator, 256B RAM, Calibration/Auto-calibration, RC Oscillator, Watchdog, External Interrupts, a VBAT switch, and on-chip battery charge control with power management.
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