Real-time Clock Module
PT7C4339/4339C
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Description
PT7C4339/4339C
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Real-time Clock Module
Features
Real-Time Clock (RTC) Including Time (Seconds,
Minutes and Hours) and Calendar (Day, Date,
Month and Year with Leap-Year Compensation
Valid Up to 2100) counter functions (BCD code) Available in a Surface-Mount Package with an
Integrated Crystal (Only for PT7C4339C) I2C Serial Interface supports I2C-Bus's high speed
mode (400 kHz) Programmable square wave output signal, defaults
to 32 kHz on Power-up Two Time-of-Day Alarms Oscillator Stop Flag Automatic Power-Fail Detect and Switch Circuitry Temperature Range: -40°C to +85°C Package: MSOP-8L and SOIC-8L for PT7C4339
TDFN4x4-8L for PT7C4339C
Applications
Description
The PT7C4339 real-time clock is a low-power
clock/calendar device with two programmable time-of-
day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C
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 o...
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