參數(shù)資料
型號: 1337DVGI
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: REAL TIME CLOCK, PDSO8
封裝: 3 MM, ROHS COMPLIANT, MSOP-8
文件頁數(shù): 12/24頁
文件大?。?/td> 362K
代理商: 1337DVGI
IDT1337
REA LTIME CLOCK WITH SERIAL INTERFACE
RTC
IDT REAL-TIME CLOCK WITH I2C SERIAL INTERFACE
2
IDT1337
REV J 111009
Pin Assignment (8-pin MSOP/SOIC)
Pin Assignment (16-pin SOIC)
Pin Descriptions
X1
INTA
SCL
SQW/INTB
GND
VCC
1
2
3
4
8
7
6
5
SDA
X2
IDT1337
16
1
15
2
14
3
13
4
5
6
7
8
9
10
12
11
SCL
VCC
NC
SDA
GND
INTA
SQW/INTB
IDT1337C
Pin
Number
Pin
Name
Pin Description/Function
MSOP
SOIC
1
X1
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 IDT1337. In this configuration, the X1 pin
is connected to the external oscillator signal and the X2 pin is left floating.
2—
X2
314
INTA
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).
4
15
GND
Connect to ground. DC power is provided to the device on these pins.
5
16
SDA
Serial data input/output. SDA is the input/output pin for the I2C serial interface. The SDA pin
is an open-drain output and requires an external pull-up resistor (2 k
typical).
6
1
SCL
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).
7
2
SQW/INTB
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).
8
3
VCC
Primary power supply. DC power is applied to this pin.
4 - 13
NC
No connect. These pins are unused and must be connected to ground.
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