參數(shù)資料
型號(hào)： 1338-31DCGI
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： 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝： 0.150 INCH, ROHS COMPLIANT, SOIC-8
文件頁(yè)數(shù)： 12/23頁(yè)
文件大小： 255K
代理商： 1338-31DCGI
IDT1338
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM
RTC
IDT REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 2
IDT1338
REV M 092211
Pin Assignment (8-pin MSOP/8-pin SOIC)
Pin Assignment (16-pin SOIC)
Pin Descriptions
X1
SCL
SQW/OUT
GND
VCC
1
2
3
4
8
7
6
5
SDA
X2
VBAT
IDT
1338
16
1
15
2
14
3
13
4
5
6
7
8
9
10
12
11
SCL
VCC
NC
SDA
GND
SQW/OUT
VBAT
IDT
1338C
Pin
Number
Pin
Name
Pin Description/Function
8MSOP,
8SOIC
16SOIC
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 12.5 pF. An external
32.768 kHz oscillator can also drive the IDT1338. In this configuration, the X1 pin is connected to
the external oscillator signal and the X2 pin is left floating.
2—
X2
314
VBAT
Backup Supply Input for Lithium Coin Cell or Other Energy Source. Battery voltage must be held
between the minimum and maximum limits for proper operation. Diodes placed in series
between the backup source and the VBAT pin may prevent proper operation. If a backup supply is
not required, VBAT must be connected to ground.
4
15
GND
Connect to ground.
5
16
SDA
Serial data input/output. SDA is the input/output pin for the I2C serial interface. It is an open-drain
output and requires an external pull-up resistor (2 Kohm typical).
6
1
SCL
Serial clock input. SCL is used to synchronize data movement on the serial interface. It is an
open-drain output and requires an external pull-up resistor (2 Kohm typical)
7
2
SQW/OUT
Square-Wave/Output driver. When enabled and the SQWE bit set to 1, the SQW/OUT pin
outputs one of four square-wave frequencies (1 Hz, 4 kHz, 8 kHz, 32 kHz). It is an open drain
output and requires an external pull-up resistor (10K ohm typical). Operates when the device is
powered with VCC or VBAT.
83
VCC
Device power supply. When voltage is applied within specified limits, the device is fully
accessible by I2C and data can be written and read.
—
4 - 13
NC
No connect. These pins are unused and must be connected to ground for proper operation.
相關(guān)PDF資料
PDF描述
1339-2DVGI 1 TIMER(S), REAL TIME CLOCK, PDSO8
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13715-806-XTD 300 MHz, OTHER CLOCK GENERATOR, PDSO16
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