1337GDCGI IDT, 1337GDCGI Datasheet - Page 3
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1337GDCGI
Manufacturer Part Number
1337GDCGI
Description
Real Time Clock Real Time Clock
Manufacturer
IDT
Datasheet
1.1337GDCGI.pdf
(27 pages)
Specifications of 1337GDCGI
Rohs
yes
Function
Clock, Calendar, Alarm
Rtc Bus Interface
I2C
Date Format
YY-MM-DD-dd
Time Format
HH
Supply Voltage - Max
5.5 V
Supply Voltage - Min
1.8 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8
Battery Backup Switching
No
Part # Aliases
IDT1337GDCGI
Pin Descriptions
IDT® REAL-TIME CLOCK WITH I
MSOP SOIC
IDT1337G
REA LTIME CLOCK WITH SERIAL INTERFACE
—
1
2
3
4
5
6
7
8
Pin Number
4 - 13
14
15
16
—
—
1
2
3
1,4,5,8,9,
12,13,16
QFN
14
15
10
11
2
3
6
7
2
C SERIAL INTERFACE
SQW/INTB
Name
INTA
GND
SDA
VCC
SCL
Pin
NC
X1
X2
Connections for standard 32.768 kHz quartz crystal. The internal oscillator
circuitry is designed for operation with a crystal having a specified load
capacitance (CL) of 7 pF. An external 32.768 kHz oscillator can also drive the
IDT1337G. In this configuration, the X1 pin is connected to the external
oscillator signal and the X2 pin is left floating.
Interrupt output. When enabled, INTA is asserted low when the time/day/date
matches the values set in the alarm registers. This pin is an open-drain output
and requires an external pull-up resistor (10 k typical).
Connect to ground. DC power is provided to the device on these pins.
Serial data input/output. SDA is the input/output pin for the I
The SDA pin is an open-drain output and requires an external pull-up resistor
(2 k typical).
Serial clock input. SCL is used to synchronize data movement on the serial
interface. The SCL pin is an open-drain output and requires an external pull-up
resistor (2 k typical).
Square-Wave/Interrupt output. Programmable square-wave or interrupt output
signal. The SQW/INT pin is an open-drain output and requires an external
pull-up resistor (10 k typical). This pin can also function as an additional
interrupt pin under certain conditions (see page 6 for details).
Primary power supply. DC power is applied to this pin.
No connect. These pins are unused and must be connected to ground.
3
Pin Description/Function
IDT1337G
2
C serial interface.
REV L 102412
RTC