1337GDCGI IDT, 1337GDCGI Datasheet - Page 3

• Manufacturer Part Number: 1337GDCGI
• Description: Real Time Clock Real Time Clock
• Manufacturer: IDT

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