PT7C4337 Datasheet, PDF (1/25 Pages) List of Unclassifed Manufacturers – Real-time Clock Module (I2C Bus)

Data Sheet
PT7C4337
Real-time Clock Module (I²C Bus)
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Product Features
Product Description
• Using external 32.768kHz quartz crystal
• Supports I²C-Bus's high speed mode (400 kHz)
• Includes time (Hour/Minute/Second) and calendar
(Year/Month/Date/Day) counter functions (BCD
code)
• Programmable square wave output signal
• Two Time-of-Day Alarms
• Oscillator Stop Flag
• Operating range: 1.8V to 5.5V
Ordering Information
Part Number
Package
PT7C4337PE
Lead free 8-Pin DIP
PT7C4337WE
Lead free 8-Pin SOIC
PT7C4337UE
Lead free 8-Pin MSOP
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.
Table 1 shows the basic functions of PT7C4337. More
details are shown in section: overview of functions.
Table 1. Basic functions of PT7C4337
Item
Function
Crystal: 32.768kHz
Source
External input
1
Oscillator
Oscillator enable/disable
Oscillator fail detect
2
Time
Time display
12-hour
24-hour
Century bit
3
Alarm interrupt
4
Programmable square wave output (Hz)
PT7C4337
√
√
√
√
√
√
√
√2
1, 4.096k, 8.192k, 32.768k
PT0205(02/07)
1
Ver: 1