Datasheet > DS14285-DS14287

DS14285-DS14287

更新时间： 2024-01-14 23:12:39

品牌	Logo	应用领域
达拉斯 - DALLAS		控制器时钟
页数	文件大小	规格书
25页	304K
描述
Real Time Clock with NV RAM Control

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中文翻译

获取价格

数据手册

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DS14285-DS14287 数据手册

DS14285/DS14287

Real Time Clock with NV RAM Control

www.dalsemi.com

FEATURES

PIN ASSIGNMENT

ꢀ Direct replacement for IBM AT computer

clock/calendar

V_CCO

V_CC

SQW

AD0

AD1

AD2

ꢀ 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

CEO

CEI

V_BAT

IRQ

RESET

GND

R/W

AD3

AD4

AD5

AD6

AD7

GND

DS14285 24-Pin DIP

ꢀ 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

DS14285S 24-Pin SOIC

ꢀ 12- or 24-hour clock with AM and PM in

12-hour mode

ꢀ Daylight Savings Time option

ꢀ Multiplex bus for pin efficiency

ꢀ Interfaced with software as 128 RAM

locations

28 27 26

AD0

AD1

AD2

AD3

AD4

AD5

CEI

V_BAT

IRQ

RESET

GND

R/W

12 13 14 15 16 17 18

– 14 bytes of clock and control registers

– 114 bytes of general purpose RAM

ꢀ Programmable square wave output signal

DS14285Q 28-Pin PLCC

ꢀ Bus-compatible interrupt signals ( IRQ )

ꢀ Three interrupts are separately software-

maskable and testable

V_CC

V_CCO

– Time-of-day alarm once/second to

once/day

– Periodic rates from 122 µs to 500 ms

– End of clock update cycle

SQW

CEO

CEI

AD0

AD1

AD2

IRQ

RESET

R/W

AD3

AD4

ꢀ Optional industrial temperature version

available DS14285 DIP, SOIC, and PLCC

AD5

AD6

AD7

GND

DS14287 24-Pin

Encapsulated Package

1 of 25

080400

12 3 4 5 6 7...25

中文翻译

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与DS14285-DS14287相关器件

型号	品牌	获取价格	描述	数据表
DS14285N	DALLAS	获取价格	Real Time Clock with NV RAM Control
DS14285N	ROCHESTER	获取价格	1 TIMER(S), REAL TIME CLOCK, PDIP24, 0.600 INCH, DIP-24
DS14285N+	DALLAS	获取价格	Real-Time Clock with NV RAM
DS14285N+	ROCHESTER	获取价格	1 TIMER(S), REAL TIME CLOCK, PDIP24, 0.600 INCH, ROHS COMPLIANT, DIP-24
DS14285Q	DALLAS	获取价格	Real Time Clock with NV RAM Control
DS14285Q+	DALLAS	获取价格	Real-Time Clock with NV RAM
DS14285QN	DALLAS	获取价格	Real Time Clock with NV RAM Control
DS14285QN+	DALLAS	获取价格	Real-Time Clock with NV RAM
DS14285QN+	ROCHESTER	获取价格	1 TIMER(S), REAL TIME CLOCK, PQCC28, ROHS COMPLIANT, PLASTIC, LCC-28
DS14285S	DALLAS	获取价格	Real Time Clock with NV RAM Control