PT7C4563 Datasheet, PDF (1/18 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

PT7C4563
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Real-time Clock Module (I²C Bus)
Features
 Using external 32.768kHz quartz crystal
 Supports I²C-Bus's high speed mode (400 kHz)
Description
The PT7C4563 serial real-time clock is a low-power
clock/calendar with a programmable square-wave output.
 Includes time (Hour/Minute/Second) and calendar
(Year/Month/Date/Day) counter functions (BCD
code)
 Programmable square wave output signal
 Oscillator stop flag
 Low backup current: typ. 400nA at V_DD=3.0V and
T_A=25°C
 Operating range: 1.3V to 5.5V
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 the 24-
hour format indicator.
Table 1 shows the basic functions of PT7C4563. More
details are shown in section: overview of functions.
Table 1. Basic functions of PT7C4563
Item
Function
Source: Crystal: 32.768kHz
1
Oscillator
Oscillator enable/disable
Oscillator fail detect
2
Time
Time display
Century bit
12-hour
24-hour
Time count chain enable/disable
3
Interrupt
Alarm interrupt
4
Programmable square wave output (Hz)
Communicati 2-wire I²C bus
5
on
Burst mode
PT7C4563
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1, 32, 1.024k, 32.768k
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2013-06-0002
PT0333-4 06/18/13
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