Datasheet > DS1390_09

DS1390_09

更新时间： 2024-01-06 05:17:00

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描述
Low-Voltage SPI/3-Wire RTCs with Trickle Charger

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DS1390_09 数据手册

19-4898; Rev 3; 8/09

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

0–DS1394

♦ 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

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

♦ 1MHz at 1.8V

♦ Three Operating Voltages: 1.8V 5%, 3.0V 10%,

and 2.97 to 5.5V (DS1394: 3.3V 10%)

the status of V

and automatically disables the bus

♦ Industrial Temperature Range: -40°C to +85°C

♦ Underwriters Laboratories (UL) Recognized

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.

Ordering Information

TYP

OPERATING

VOLTAGE (V)

PIN-

PACKAGE

†

PART

TOP MARK

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.

DS1390U-18+

DS1390U-3+

DS1390U-33+

DS1390U-33/V+

DS1391U-18+

DS1391U-3+

DS1391U-33+

DS1392U-18+

DS1392U-3+

DS1392U-33+

DS1393U-18+

DS1393U-3+

DS1393U-33+

DS1394U-33+

1.8

3.0

3.3

1.8

3.0

3.3

1.8

3.0

3.3

1.8

3.0

3.3

10 μSOP

1390 rr-18

1390 rr-3

1390 rr-33

1391 rr-18

1391 rr-3

1391 rr-33

1393 rr-18

1392 rr-3

1392 rr-33

1393 rr-18

1393 rr-3

1393 rr-33

1394 rr-33

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

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.

♦ Output Pin Configurable as Interrupt or Square

Wave with Programmable Frequency of

32.768kHz, 8.192kHz, 4.096kHz, or 1Hz

(DS1390/DS1393/DS1394 Only)

rr = Revision code on second line of top mark.

♦ One Time-of-Day Alarm

♦ Power-Fail Detect and Switch Circuitry

Typical Operating Circuits and Pin Configurations appear at

end of the data sheet.

SPI is a trademark of Motorola, Inc.

______________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...26

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与DS1390_09相关器件

型号	品牌	获取价格	描述	数据表
DS1390-DS1393	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-18	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-18+	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-3	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-3	ROCHESTER	获取价格	1 TIMER(S), REAL TIME CLOCK, PDSO10, MO-187CBA, MICRO, SOP-10
DS1390U-3+	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-3+T&R	MAXIM	获取价格	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO10, MO-187CBA, MICRO, SOP-10
DS1390U-33	ROCHESTER	获取价格	1 TIMER(S), REAL TIME CLOCK, PDSO10, MO-187CBA, MICRO, SOP-10
DS1390U-33	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390U-33/V+	MAXIM	获取价格	Low-Voltage SPI/3-Wire RTCs with Trickle Charger

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