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参数资料
| 型号： | DS1672U-2 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | MICRO, SOP-8 |
| 文件页数： | 1/13页 |
| 文件大小： | 104K |
| 代理商： | DS1672U-2 |
1 of 13
082800
FEATURES
32-bit counter
2-wire serial interface
Automatic power-fail detect and switch
circuitry
Power-fail reset output
Low-voltage oscillator operation (1.3V min.)
Trickle charge capability
ORDERING INFORMATION
DS1672X-X
2
2.0V operation
3
3.0V operation
33 3.3V operation
blank
8-pin DIP
S8-pin SOIC
U
8-pin SOP
PIN ASSIGNMENT
PIN DESCRIPTION
VCC, VBACKUP
- Power Supply Inputs
GND
- Ground
X1, X2
- 32.768 kHz crystal pins
SCL
- Serial clock
SDA
- Serial data
RST
- Reset output
DESCRIPTION
The DS1672 incorporates a 32-bit counter and power monitoring functions.
The 32-bit counter is
designed to count seconds and can be used to derive time of day, week, month, month, and year by using
a software algorithm. A precision temperature-compensated reference and comparator circuit monitors
the status of VCC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated
which forces the reset to the active state. When VCC returns to an in-tolerance condition, the reset signal
is kept in the active state for 250 ms to allow the power supply and processor to stabilize.
OPERATION
The block diagram in Figure 1 shows the main elements of the DS1672. As shown, communications to
and from the DS1672 occur serially over a 2-wire bi-directional bus. The DS1672 operates as a slave
device on the serial bus. Access is obtained by implementing a START condition and providing a device
identification code followed by a register address. Subsequent registers can be accessed sequentially until
a STOP condition is executed.
DS1672
Low Voltage Serial Timekeeping Chip
PRELIMINARY
1
2
3
4
8
7
6
5
VCC
RST
SCL
SDA
X1
X2
VBACKUP
GND
相关PDF资料 |
PDF描述 |
|---|---|
| DS1672U-33 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| DS1672S-2 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| DS1672U-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| DS1672S-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| DS1673S-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1672U-2+ | 功能描述:实时时钟 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1672U-3 | 功能描述:实时时钟 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1672U-3+ | 功能描述:实时时钟 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1672U-33 | 功能描述:实时时钟 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1672U-33/T&R | 功能描述:实时时钟 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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