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參數(shù)資料
| 型號： | DS1677E |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| 封裝： | 4.40 MM, TSSOP-20 |
| 文件頁數(shù)： | 11/18頁 |
| 文件大?。?/td> | 224K |
| 代理商： | DS1677E |
DS1677
2 of 18
DETAILED DESCRIPTION
The microprocessor monitor circuitry of the DS1677 provides three basic functions. First, 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 to RST the active
state. When VCC returns to an in-tolerance condition, the RST signal is kept in the active state for 250ms
to allow the power supply and processor to stabilize. The DS1677 debounces a pushbutton input and
guarantees an active RST pulse width of 250ms. The third function is a watchdog timer. The DS1677 has
an internal timer that forces the RST signal to the active state if the strobe input is not driven low prior to
watchdog timeout.
The DS1677 also provides a 3-channel 8-bit successive approximation ADC. The converter has an
internal 2.55V (typical) reference voltage generated by an on-board band-gap circuit. The ADC is
monotonic (no missing codes) and has an internal analog filter to reduce high-frequency noise.
OPERATION
The block diagram in Figure 1 shows the main elements of the DS1677. The following paragraphs
describe the function of each pin.
DS1677 BLOCK DIAGRAM Figure 1
相關(guān)PDF資料 |
PDF描述 |
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| DS1678S | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| DS1678 | 0 TIMER(S), REAL TIME CLOCK, PDIP8 |
| DS1682S | 0 TIMER(S), TIME RECORDER, PDSO8 |
| DS1682 | 0 TIMER(S), TIME RECORDER, PDSO8 |
| DS1685-3 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1677E+ | 功能描述:實時時鐘 Portable System Controller 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 |
| DS1677E-5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Portable System Controller(275.85 k) |
| DS1678 | 功能描述:實時時鐘 Real-Time Event Recorder 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 |
| DS1678+ | 功能描述:實時時鐘 Real-Time Event Recorder 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 |
| DS1678J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
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