DS14285SSLASHTR datasheet(1/26 Pages) DALLAS

部件名	DS14285S/TR

功能描述	Real-Time Clock with NV RAM

PDF	26 Pages

Scroll/Zoom	100%

制造商	DALLAS [Dallas Semiconductor]

网页	https://www.maximintegrated.com/en.html

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REV: 112105

FEATURES

Direct Replacement for IBM AT

Computer Clock/Calendar

Functionally Compatible with the

DS1285/DS1287

Available as Chip (DS14285, DS14285S, or

DS14285Q) or Stand-Alone Module with

Embedded Lithium Battery and Crystal

(DS14287)

Automatic Backup Supply and Write

Protection to Make External SRAM

Nonvolatile

Counts Seconds, Minutes, Hours, Days,

Day of the Week, Date, Month, and Year

with Leap Year Compensation Valid Up

to 2100

Binary or BCD Representation of Time,

Calendar, and Alarm

12- or 24-Hour Clock with AM and PM in

12-Hour Mode

Daylight Saving Time Option

Multiplex Bus for Pin Efficiency

Interfaced with Software as 128 RAM

Locations

14 Bytes of Clock and Control Registers

114 Bytes of General Purpose RAM

Programmable Square-Wave Output

Signal

Bus-Compatible Interrupt Signals (

IRQ)

Three Interrupts are Separately Software-

Maskable and Testable

Time-of-Day Alarm Once/Second to

Once/Day

Periodic Rates from 122

µs to 500ms

End of Clock Update Cycle

Optional Industrial Temperature Version

Available: DS14285 DIP, SO, and PLCC

PIN CONFIGURATIONS

DS14285/DS14287

Real-Time Clock with NV RAM

Control Control

www.maxim-ic.com

PLCC

AD0

AD1

AD2

AD3

AD4

AD5

CEI

VBAT

IRQ

RESET

DS

GND

N.C.

R/W

25

24

23

22

21

20

19

5

6

7

8

9

10

11

4

3

2

1

28 27 26

12 13 14 15 16 17 18

23

N.C.

AD1

AD3

AD4

AD5

AD6

AD7

GND

VCC

SQW

CEO

CEI

N.C.

IRQ

RESET

DS

N.C.

R/W

AS

CS

1

2

3

4

5

6

7

8

9

10

11

12

24

22

21

20

19

18

17

16

15

14

13

N.C.

AD0

AD2

VCCO

Encapsulated Package

DS14287

DS14285

DIP/SO

23

X2

AD1

AD3

AD4

AD5

AD6

AD7

GND

VCC

CEI

VBAT

IRQ

RESET

DS

GND

R/W

AS

CS

1

2

3

4

5

6

7

8

9

10

11

12

24

22

21

20

19

18

17

16

15

14

13

X1

AD0

AD2

SQW

CEO

VCCO

TOP VIEW

类似零件编号 - DS14285S/TR

制造商	部件名	数据表	功能描述
Dallas Semiconductor	DS14285S	303Kb / 25P	Real Time Clock with NV RAM Control
Dallas Semiconductor	DS14285SN	303Kb / 25P	Real Time Clock with NV RAM Control

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类似说明 - DS14285S/TR

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