- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379180 > DS1670E Portable System Controller PDF資料下載
參數(shù)資料
| 型號： | DS1670E |
| 英文描述： | Portable System Controller |
| 中文描述： | 便攜式系統(tǒng)控制器 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 252K |
| 代理商： | DS1670E |
DS1670
2 of 17
The microprocessor monitor circuitry of the DS1670 provides three basic functions. First, 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 signals are kept in the active state for
250 ms to allow the power supply and processor to stabilize. The second microprocessor monitor
function is pushbutton reset control. The DS1670 debounces a pushbutton input and guarantees an active
reset pulse width of 250 ms. The third function is a watchdog timer. The DS1670 has an internal timer
that forces the reset signals to the active state if the strobe input is not driven low prior to watchdog
time-out.
The DS1670 also provides a 3-channel, 8-bit successive approximation analog-to-digital converter. The
converter has an internal 2.55-volt (typical) reference voltage generated by an on-board band-gap circuit.
The A/D converter 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 DS1670. The following paragraphs
describe the function of each pin.
DS1670 BLOCK DIAGRAM
Figure 1
SIGNAL DESCRIPTIONS
V
CC
, GND
- DC power is provided to the device on these pins. V
CC
is the +3.3 volt input. When
3.3 volts are applied within nominal limits, the device is fully accessible and data can be written and read.
When V
CC
drops below 2.88 volts (typical) access to the device is prohibited. When V
CC
drops below the
lower of V
BAT
and 2.7 volts (typical), the device is switched over to the backup power supply.
V
BAT
(Backup Power Supply)
- Battery input for standard 3-volt lithium cell or other energy source.
SCLK (Serial Clock Input)
- SCLK is used to synchronize data movement on the serial interface.
I/O (Data Input/Output)
- The I/O pin is the bi-directional data pin for the 3-wire interface.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1670S | Portable System Controller |
| DS17285 | 3V/5V Real-Time Clock |
| DS17285-3 | 3V/5V Real-Time Clock |
| DS17285-5 | 3V/5V Real-Time Clock |
| DS17285E-3 | 3V/5V Real-Time Clock |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1670E/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CTRLR SYSTEM PORTABLE 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Portable System Controller |
| DS1670E/T&R | 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1670E/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Portable System Controller |
| DS1670E+ | 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1670E+T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CTRLR SYSTEM PORTABLE 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Portable System Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。