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參數資料
| 型號： | DS1629S+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數： | 6/23頁 |
| 文件大小： | 490K |
| 描述： | IC THERM/RTC/CALENDAR DIG 8-SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | ADC，比較器，振蕩器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
DS1629
6 of 23
OPERATIONREAL-TIME CLOCK/CALENDAR
DS1629 real-time clock/calendar data is accessed with the 2-wire command protocol C0h. If the R/
bit
in the 2-wire control byte is set to 0, the bus master will set the clock (write to the clock register). The bus
master sets the R/
bit to 1 to read the current time (read from the clock register). See the 2-Wire Serial
Bus section for details on this protocol.
The format of the clock register is shown below in Figure 2. Data format for the clock register is binary-
coded decimal (BCD). Most of the clock register is self-explanatory, but a few of the bits require
elaboration.
CH = Clock halt bit. This bit is set to 0 to enable the oscillator and set to 1 to disable it. If the bit is
changed during a write to the clock register, the oscillator will not be started (or stopped) until the bus
master issues a STOP pulse. The DS1629 power-up default has the oscillator enabled (CH = 0) so that
OSC can be used for clocking a microcontroller at power-up.
12/24 = Clock mode bit. This bit is set high when the clock is in the 12-hour mode and set to 0 in the 24-
hour mode. Bit 5 of byte 02h of the clock register contains the MSb of the hours (1 for hours 20-23) if the
clock is in the 24-hour mode. If the clock mode is set to the 12-hour mode, this is the AM/PM bit. In the
12-hour mode, a 0 in this location denotes AM and a 1 denotes PM. When setting the clock, this bit must
be written to according to the clock mode used.
Bits in the clock register filled with 0 are a dont care on a write, but will always read out as 0.
DS1629 CLOCK REGISTER FORMAT Figure 2
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