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參數(shù)資料
| 型號： | DS1305E |
| 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： | 0.173 INCH, TSSOP-20 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大?。?/td> | 309K |
| 代理商： | DS1305E |
DS1305
4 of 22
PIN DESCRIPTION (continued)
PIN
DIP
TSSOP
NAME
FUNCTION
12
15
SDI
Serial Data Input. When SPI communication is selected, the SDI pin is the
serial data input for the SPI bus. When 3-wire communication is selected, this
pin must be tied to the SDO pin (the SDI and SDO pins function as a single I/O
pin when tied together).
13
16
SDO
Serial Data Output. When SPI communication is selected, the SDO pin is the
serial data output for the SPI bus. When 3-wire communication is selected, this
pin must be tied to the SDI pin (the SDI and SDO pins function as a single I/O
pin when tied together).
14
17
VCCIF
Interface Logic Power-Supply Input. The VCCIF pin allows the DS1305 to drive
SDO and
PF output pins to a level that is compatible with the interface logic,
thus allowing an easy interface to 3V logic in mixed supply systems. This pin is
physically connected to the source connection of the p-channel transistors in
the output buffers of the SDO and
PF pins.
15
18
PF
Active-Low Power-Fail Output. The
PF pin is used to indicate loss of the
primary power supply (VCC1). When VCC1 is less than VCC2 or is less than VBAT,
the
PF pin is driven low.
16
20
VCC1
Primary Power Supply. DC power is provided to the device on this pin.
OPERATION
The block diagram in Figure 1 shows the main elements of the serial alarm RTC. The following
paragraphs describe the function of each pin.
Figure 1. BLOCK DIAGRAM
1Hz
OSCILLATOR AND
COUNTDOWN CHAIN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1306N | 0 TIMER(S), REAL TIME CLOCK, PDIP16 |
| DS1306 | 0 TIMER(S), REAL TIME CLOCK, PDIP16 |
| DS1306E | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| DS1306EN | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| DS1307Z | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
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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