Automotive Tiny Real-Time Clock/Calendar with Alarm Function and I²C-bus

System Features

• AEC-Q100 grade 2 compliant for automotive applications
• Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
• Low current; typical 0.25 µA at V_DD = 3.0 V and T_amb = 25 ^°C
• Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
• Alarm function
• Minute and half minute interrupt
• Internal Power-On Reset (POR)
• High-temperature operation range: 40 ^°C to +105 ^°C
• Clock operating voltage: 0.9 V to 5.5 V
• 400 kHz two-line I²C-bus interface (at V_DD = 1.8 V to 5.5 V)
• Selectable integrated oscillator load capacitors for C_L = 7 pF or C_L = 12.5 pF
• Countdown timer
• Oscillator stop detection function
• Programmable offset register for frequency adjustment