PT7C4363 Datasheet, PDF (1/22 Pages) Pericom Semiconductor Corporation – Real-time Clock Module (I2C Bus)

Data Sheet
PT7C4363
Real-time Clock Module (I²C Bus)
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Features
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
• Oscillator stop flag
• Low backup current: typ. 500nA at V_DD=3.0V and
T_A=25°C
• Operating range: 1.8V to 5.5V
The PT7C4363 serial real-time clock is a low-power
clock/calendar with 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 the 24-
hour format indicator.
Ordering Information
Part Number
Package
PT7C4363P
8-Pin DIP
PT7C4363W
8-Pin SOIC
Note: Lead free package is available by adding “E” after each
part number. For example: PT7C4363PE.
Table 1 shows the basic functions of PT7C4363. More
details are shown in section: overview of functions.
Table 1. Basic functions of PT7C4363
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
Alarm interrupt
3
Interrupt
Timer interrupt output
4
Programmable square wave output (Hz)
2-wire I²C bus
Communicat
5
ion
3-wire bus
Burst mode
Write protection
6
Control
External clock test mode
Power-on reset override
PT7C4363
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1, 32, 1.024k, 32.768k
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PT0207(07/05)
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