- 您現在的位置：買賣IC網 > PDF目錄97864 > DS17285-3 (MAXIM INTEGRATED PRODUCTS INC) 1 TIMER(S), REAL TIME CLOCK, PDIP24 PDF資料下載
參數資料
| 型號： | DS17285-3 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-24 |
| 文件頁數： | 1/35頁 |
| 文件大小： | 662K |
| 代理商： | DS17285-3 |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁
General Description
The DS17285, DS17485, DS17885, DS17287, DS17487,
and DS17887 real-time clocks (RTCs) are designed to be
successors to the industry-standard DS12885 and
DS12887. The DS17285, DS17485, and DS17885 (here-
after referred to as the DS17x85) provide a real-time
clock/calendar, one time-of-day alarm, three maskable
interrupts with a common interrupt output, a programma-
ble square wave, and 114 bytes of battery-backed NV
SRAM. The DS17x85 also incorporates a number of
enhanced functions including a silicon serial number,
power-on/off control circuitry, and 2k, 4k, or 8kbytes of
battery-backed NV SRAM. The DS17287, DS17487, and
DS17887 (hereafter referred to as the DS17x87) integrate
a quartz crystal and lithium energy source into a 24-pin
encapsulated DIP package. The DS17x85 and DS17x87
power-control circuitry allows the system to be powered
on by an external stimulus such as a keyboard or by a
time-and-date (wake-up) alarm. The PWR output pin is
triggered by one or either of these events, and is used to
turn on an external power supply. The PWR pin is under
software control, so that when a task is complete, the sys-
tem power can then be shut down.
For all devices, the date at the end of the month is auto-
matically adjusted for months with fewer than 31 days,
including correction for leap years. It also operates in
either 24-hour or 12-hour format with an AM/PM indicator.
A precision temperature-compensated circuit monitors
the status of VCC. If a primary power failure is detected,
the device automatically switches to a backup supply. A
lithium coin cell battery can be connected to the VBAT
input pin on the DS17x85 to maintain time and date oper-
ation when primary power is absent. The DS17x85 and
DS17x87 include a VBAUX input used to power auxiliary
functions such as PWR control. The device is accessed
through a multiplexed byte-wide interface.
Applications
Embedded Systems
Utility Meters
Security Systems
Network Hubs, Bridges, and Routers
Features
Incorporates Industry-Standard DS12887 PC
Clock Plus Enhanced Functions
RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year with Leap Year Compensation
Through 2099
Optional +3.0V or +5.0V Operation
SMI Recovery Stack
64-Bit Silicon Serial Number
Power-Control Circuitry Supports System Power-
On from Date/Time Alarm or Key Closure
Crystal Select Bit Allows Operation with 6pF or
12.5pF Crystal
12-Hour or 24-Hour Clock with AM and PM in
12-Hour Mode
114 Bytes of General-Purpose, Battery-Backed NV
SRAM
Extended Battery-Backed NV SRAM
2048 Bytes (DS17285/DS17287)
4096 Bytes (DS17485/DS17487)
8192 Bytes (DS17885/DS17887)
RAM Clear Function
Interrupt Output with Six Independently Maskable
Interrupt Flags
Time-of-Day Alarm Once per Second to Once per
Day
End of Clock Update Cycle Flag
Programmable Square-Wave Output
Automatic Power-Fail Detect and Switch Circuitry
Available in PDIP, SO, or TSOP Package
(DS17285, DS17485, DS17885)
Optional Encapsulated DIP (EDIP) Package with
Integrated Crystal and Battery (DS17287,
DS17487, DS17887)
Optional Industrial Temperature Range Available
Underwriters Laboratory (UL) Recognized
DS17285/DS17287/DS17485/DS17487/DS17885/DS17887
Real-Time Clocks
______________________________________________ Maxim Integrated Products
1
Rev 0; 4/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information, Pin Configurations, and Typical
Operating Circuit appear at end of data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| DS17885SN-5 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS17287-3 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS17487-5 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS17885-5 | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS17285N-5 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS17285-3+ | 功能描述:實時時鐘 3V/5V RTC K Multiplexed Kick-S 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 |
| DS17285-5 | 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS17285-5+ | 功能描述:實時時鐘 3V/5V RTC K Multiplexed Kick-S 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 |
| DS17285-DS17287 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Real-Time Clock |
| DS17285E3 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Real-Time Clocks |
發布緊急采購，3分鐘左右您將得到回復。