FEATURES
• Minimum Timekeeping supply voltage TYP:0.66 to 5.5v (Worst: 1.00V to 5.5v); VDD pin
• Low power consumption 0.45μA TYP at VDD=3V (1.00μA MAX.)
• Three signal lines (CE, SCLK, SIO) required for connection to the CPU.
(Maximum clock frequency of 1MHz (with VDD = 3V) )
• Time counters (counting hours, minutes, and seconds) and calendar counters (counting years, months, days,
and weeks) (in BCD format)
• Interrupt circuit configured to generate interrupt signals (with interrupts ranging from 0.5 seconds to 1 month)
to the CPU and provided with an interrupt flag and an interrupt halt
• 2 alarm interrupt circuits (Alarm_W for week, hour, and minute alarm settings and Alarm_D for hour and minute
alarm settings)
• With Power-on flag to prove that the power supply starts from 0V
• 32-kHz clock output pin (CMOS push-pull output with control pin)
• Supply voltage monitoring circuit with two supply voltage monitoring threshold settings
• Automatic identification of leap years up to the year 2099
• Selectable 12-hour and 24-hour mode settings
• High precision oscillation adjustment circuit
• Built-in oscillation stabilization capacitors (CG and CD)
• Package TSSOP10G (4.0mm x 2.9mm x 1.0mm: R2033T)
FFP12 (2.0mm x 2.0mm x 1.0mm: R2033K)
QFN023023-16(2.3mm x 2.3mm x 0.4mm:R2033L)
• CMOS process