參數(shù)資料
型號(hào): DS1307
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): Timer or RTC
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDIP8
封裝: 0.300 INCH, PLASTIC, DIP-8
文件頁(yè)數(shù): 14/14頁(yè)
文件大?。?/td> 361K
代理商: DS1307
DS1307 64 x 8, Serial, I2C Real-Time Clock
9 of 14
CONTROL REGISTER
The DS1307 control register is used to control the operation of the SQW/OUT pin.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
OUT
0
SQWE
0
RS1
RS0
Bit 7: Output Control (OUT). This bit controls the output level of the SQW/OUT pin when the square-wave output
is disabled. If SQWE = 0, the logic level on the SQW/OUT pin is 1 if OUT = 1 and is 0 if OUT = 0. On initial
application of power to the device, this bit is typically set to a 0.
Bit 4: Square-Wave Enable (SQWE). This bit, when set to logic 1, enables the oscillator output. The frequency of
the square-wave output depends upon the value of the RS0 and RS1 bits. With the square-wave output set to 1Hz,
the clock registers update on the falling edge of the square wave. On initial application of power to the device, this
bit is typically set to a 0.
Bits 1 and 0: Rate Select (RS[1:0]). These bits control the frequency of the square-wave output when the square-
wave output has been enabled. The following table lists the square-wave frequencies that can be selected with the
RS bits. On initial application of power to the device, these bits are typically set to a 1.
RS1
RS0
SQW/OUT OUTPUT
SQWE
OUT
0
1Hz
1
X
0
1
4.096kHz
1
X
1
0
8.192kHz
1
X
1
32.768kHz
1
X
0
X
1
0
1
相關(guān)PDF資料
PDF描述
DS1315EN-5 0 TIMER(S), REAL TIME CLOCK, PDSO20
DS1315-5 0 TIMER(S), REAL TIME CLOCK, PDIP16
DS1315EN-33 0 TIMER(S), REAL TIME CLOCK, PDSO20
DS1315N-5 0 TIMER(S), REAL TIME CLOCK, PDIP16
DS1315E-33 0 TIMER(S), REAL TIME CLOCK, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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