Time Clock. IT7C4337 Datasheet

IT7C4337 Clock. Datasheet pdf. Equivalent


RayStar IT7C4337
Product Datasheet
IT7C4337
Real Time Clock
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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
IT7C4337WE Lead free and Green 8-Pin SOIC
IT7C4337UE Lead free and Green 8-Pin MSOP
IT7C4337ZEE Lead free and Green 8-Pin TDFN
IT7C4337TE Lead free and Green 8-Pin TSSOP
The IT7C4337 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 IT7C4337. More
details are shown in section: overview of functions.
Table 1. Basic functions of IT7C4337
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)
IT7C4337
2
1, 4.096k, 8.192k, 32.768k
1
RayStar Microelectronics Technology Inc.
Ver: 1.0


IT7C4337 Datasheet
Recommendation IT7C4337 Datasheet
Part IT7C4337
Description Real Time Clock
Feature IT7C4337; Product Datasheet IT7C4337 Real Time Clock ||||||||||||||||||||||||||||||||||||||||||||||||||||||||.
Manufacture RayStar
Datasheet
Download IT7C4337 Datasheet




RayStar IT7C4337
Product Datasheet
IT7C4337
Real Time Clock
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Pin Assignment
IT7C4337
Pin Description
Pin no.
Pin Type
Description
1
X1
I
Oscillator Circuit Input. Together with X2, 32.768kHz crystal is connected between them.
Or external clock input.
2
X2
O
Oscillator Circuit Output. Together with X1, 32.768kHz crystal is connected between them.
When 32.768kHz external input, X2 must be float.
6 SCL I Serial Clock Input. SCL is used to synchronize data movement on the I2C serial interface.
5
SDA
I/O
Serial Data Input/Output. SDA is the input/output pin for the 2-wire serial interface. The
SDA pin is open-drain output and requires an external pull-up resistor.
3
INTA
O
Interrupt Output. When enabled, INTA is asserted low when the time matches the values set
in the alarm registers. This pin is an open-drain output and requires an external pull up resistor.
7
SQW/INTB
O
Square-Wave/Interrupt Output. Programmable square-wave or interrupt output signal. It is
an open-drain output and requires an external pull up resistor.
8
VCC
P Power.
4
GND
P Ground.
2
RayStar Microelectronics Technology Inc.
Ver: 1.0



RayStar IT7C4337
Product Datasheet
IT7C4337
Real Time Clock
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Function Block
3
RayStar Microelectronics Technology Inc.
Ver: 1.0







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