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參數(shù)資料
| 型號： | DS1305E |
| 英文描述： | Serial Alarm Real Time Clock RTC |
| 中文描述： | 串行實(shí)時時鐘鬧鐘時鐘 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大小： | 257K |
| 代理商： | DS1305E |
DS1305
4 of 22
CE (Chip Enable)
- The Chip Enable signal must be asserted high during a read or a write for both 3-
wire and SPI communication. This pin has an internal 55K pull-down resistor (typical).
INT0
(Interrupt 0 Output)
- The
INT0
pin is an active low output of the DS1305 that can be used as an
interrupt input to a processor. The
INT0
pin can be programmed to be asserted by only Alarm 0 or can be
programmed to be asserted by either Alarm 0 or Alarm 1. The
INT0
pin remains low as long as the status
bit causing the interrupt is present and the corresponding interrupt enable bit is set. The
INT0
pin
operates when the DS1305 is powered by V
CC1
, V
CC2
, or V
BAT
. The
INT0
pin is an open drain output and
requires an external pull-up resistor.
INT1
(Interrupt 1 Output)
- The
INT1
pin is an active low output of the DS1305 that can be used as an
interrupt input to a processor. The
INT1
pin can be programmed to be asserted by Alarm 1 only. The
INT1
pin remains low as long as the status bit causing the interrupt is present and the corresponding
interrupt enable bit is set. The
INT1
pin operates when the DS1305 is powered by V
CC1
, V
CC2
, or V
BAT
.
The
INT1
pin is an open drain output and requires an external pull-up resistor.
Both
INT0
and
INT1
are open drain outputs. The two interrupts and the internal clock continue to run
regardless of the level of V
CC
(as long as a power source is present).
PF
(Power Fail Output)
- The
PF
pin is used to indicate loss of the primary power supply (V
CC1
).
When V
CC1
is less than V
CC2
or is less than V
BAT
, the
PF
pin will be driven low.
X1, X2
- Connections for a standard 32.768 kHz quartz crystal. The internal oscillator is designed for
operation with a crystal having a specified load capacitance of 6 pF. For more information on crystal
selection and crystal layout considerations, please consult Application Note 58, “Crystal Considerations
with Dallas Real Time Clocks.” The DS1305 can also be driven by an external 32.768 kHz oscillator. In
this configuration, the X1 pin is connected to the external oscillator signal and the X2 pin is floated.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1305N | Serial Alarm Real Time Clock RTC |
| DS1306EN | Serial Alarm Real Time Clock RTC |
| DS1306 | Serial Alarm Real Time Clock RTC |
| DS1306E | Serial Alarm Real Time Clock RTC |
| DS1306N | Serial Alarm Real Time Clock RTC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1305E/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock |
| DS1305E/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock |
| DS1305E/T&R | 制造商:Maxim Integrated Products 功能描述:IC RTC SERIAL ALARM 20-TSSOP |
| DS1305E/T&R | 功能描述:實(shí)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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1305E/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial Alarm Real-Time Clock |
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