The R2033K/T is a 3 wire interface real-time clock IC, which is a CMOS real-time clock IC using a capacitor oscillator of 32.768kHz as the clock frequency, generating 1 second clock pulses through the internal clock circuit, and generating clock interrupts and calendar interrupts through the internal circuit.
The Ricoh R2033K/T is a CMOS real-time clock IC designed for connection to a CPU via three signal lines: CE, SCLK, and SIO. It supports serial transmission of time and calendar data and includes a periodic interrupt circuit with six selectable ranges from 0.5 seconds to 1 month. The device also features two alarm interrupt circuits for preset times and a 32.768kHz clock output function.
| Minimum Timekeeping Supply Voltage | 0.66V to 5.5V |
|---|---|
| Timekeeping Current | 0.45uA TYP at 3V |
| Maximum Clock Frequency | 1MHz |
| Oscillation Frequency | 32.768 kHz |
| Operating Temperature | -40 to +85 °C |
| Package Type R2033K | FFP 12 |
| Package Type R2033T | TSSOP10G |
The minimum timekeeping supply voltage is typically 0.66V to 5.5V.
Three signal lines (CE, SCLK, SIO) are required for connection to the CPU.
The maximum clock frequency is 1MHz when VDD is 3V.