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參數資料
| 型號： | DS1672 |
| 英文描述： | Low Voltage Serial Timekeeping Chip |
| 文件頁數： | 1/13頁 |
| 文件大小： | 104K |
| 代理商： | DS1672 |
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
S
U
8-pin DIP
8-pin SOIC
8-pin μSOP
PIN ASSIGNMENT
PIN DESCRIPTION
V
CC,
V
BACKUP
GND
X1, X2
SCL
SDA
RST
- Power Supply Inputs
- Ground
- 32.768 kHz crystal pins
- Serial clock
- Serial data
- 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 V
CC
. When an out-of-tolerance condition occurs, an internal power-fail signal is generated
which forces the reset to the active state. When V
CC
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
V
CC
RST
SCL
SDA
X1
X2
V
BACKUP
GND
相關PDF資料 |
PDF描述 |
|---|---|
| DS1672S-2 | Low Voltage Serial Timekeeping Chip |
| DS1672S-3 | Low Voltage Serial Timekeeping Chip |
| DS1672S-33 | Low Voltage Serial Timekeeping Chip |
| DS1682 | Total Elapsed Time Recorder with Alarm |
| DS1682S | Total Elapsed Time Recorder with Alarm |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1672_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C 32-Bit Binary Counter RTC |
| DS1672-2 | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672-2+ | 功能描述:實時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672-3 | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672-3+ | 功能描述:實時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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