参数资料
型号: DS1307N
厂商: Maxim Integrated Products
文件页数: 14/14页
文件大小: 0K
描述: IC RTC SERIAL 512K IND 8-DIP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
类型: 时钟/日历
特点: 闰年,NVSRAM,方波输出
存储容量: 56B
时间格式: HH:MM:SS(12/24 小时)
数据格式: YY-MM-DD-dd
接口: I²C,2 线串口
电源电压: 4.5 V ~ 5.5 V
电压 - 电源,电池: 2 V ~ 3.5 V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
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
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