Press Release Summary:
Model PT7C4337 clock/calendar features 2 programmable time-of-day alarms and programmable square-wave output. Date at end of month is automatically adjusted for months with fewer than 31 days, including corrections for leap year, and clock operates in either 24 or 12 hr format with AM/PM indicator. Operating from 1.8-5.5 V, unit has oscillator stop flay function and external quartz crystal frequency of 32.768 kHz. Package options include SOIC-8, DIP-8, and MSOP-8.
Original Press Release:
Real-Time Clock Module (I2C bus) PT7C4337
The PT7C4337 serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially via a 2-wire, bidirectional bus.
The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.
It has oscillator stop flay function. The external quartz crystal frequency is 32.768kHz. It has wide operating range: 1.8V to 5.5V. There are three packages: SOIC-8, DIP-8 and MSOP-8.