Electronic Components Datasheet Search |
|
DS1391U-33+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
|
DS1391U-33+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 26 page General Description The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/cal- endars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. One programmable time-of-day alarm is provided. A temperature-compensated voltage reference monitors the status of VCC and automatically disables the bus interface and switches to the backup supply if a power failure is detected. On the DS1390, a single open-drain output provides a CPU interrupt or a square wave at one of four selectable frequencies. The DS1391 replaces the SQW/INT pin with a RST output/ debounced input. The DS1390, DS1391, and DS1394 are programmed serially through an SPI-compatible, bidirectional bus. The DS1392 and DS1393 communicate over a 3-wire serial bus, and the extra pin is used for either a sepa- rate interrupt pin or a RST output/debounced input. All five devices are available in a 10-pin µSOP package, and are rated over the industrial temperature range. Applications Hand-Held Devices GPS/Telematics Devices Embedded Time Stamping Medical Devices Features ♦ Real-Time Clock Counts Hundredths of Seconds, Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Valid Up to 2100 ♦ Output Pin Configurable as Interrupt or Square Wave with Programmable Frequency of 32.768kHz, 8.192kHz, 4.096kHz, or 1Hz (DS1390/DS1393/DS1394 Only) ♦ One Time-of-Day Alarm ♦ Power-Fail Detect and Switch Circuitry ♦ Reset Output/Debounced Input (DS1391/DS1393) ♦ Separate SQW and INT Output (DS1392) ♦ Trickle-Charge Capability ♦ SPI Supports Modes 0 and 2 (DS1394) ♦ SPI Supports Modes 1 and 3 (DS1390/DS1391) ♦ 3-Wire Interface (DS1392/DS1393) ♦ 4MHz at 3.0V and 3.3V ♦ 1MHz at 1.8V ♦ Three Operating Voltages: 1.8V ±5%, 3.0V ±10%, and 2.97 to 5.5V (DS1394: 3.3V ±10%) ♦ Industrial Temperature Range: -40°C to +85°C ♦ Underwriters Laboratories (UL) Recognized Low-Voltage SPI/3-Wire RTCs with Trickle Charger ______________________________________________ Maxim Integrated Products 1 Ordering Information 19-4898; Rev 3; 8/09 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Typical Operating Circuits and Pin Configurations appear at end of the data sheet. Note: All devices are rated for the -40°C to +85°C operating temperature range. + Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. † A “+” anywhere on the top mark denotes a lead(Pb)- free/RoHS-compliant package. rr = Revision code on second line of top mark. PART TYP OPERATING VOLTAGE (V) PIN- PACKAGE TOP MARK† DS1390U-18+ 1.8 10 μSOP 1390 rr-18 DS1390U-3+ 3.0 10 μSOP 1390 rr-3 DS1390U-33+ 3.3 10 μSOP 1390 rr-33 DS1390U-33/V+ 3.3 10 μSOP 1390 rr-33 DS1391U-18+ 1.8 10 μSOP 1391 rr-18 DS1391U-3+ 3.0 10 μSOP 1391 rr-3 DS1391U-33+ 3.3 10 μSOP 1391 rr-33 DS1392U-18+ 1.8 10 μSOP 1393 rr-18 DS1392U-3+ 3.0 10 μSOP 1392 rr-3 DS1392U-33+ 3.3 10 μSOP 1392 rr-33 DS1393U-18+ 1.8 10 μSOP 1393 rr-18 DS1393U-3+ 3.0 10 μSOP 1393 rr-3 DS1393U-33+ 3.3 10 μSOP 1393 rr-33 DS1394U-33+ 3.3 10 μSOP 1394 rr-33 SPI is a trademark of Motorola, Inc. |
Similar Part No. - DS1391U-33+ |
|
Similar Description - DS1391U-33+ |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |