Datasheet > 微控制器和处理器 > 计时器或实时时钟> DS14285+

DS14285+

更新时间： 2024-11-26 04:15:07

品牌	Logo	应用领域
达拉斯 - DALLAS		外围集成电路光电二极管时钟
页数	文件大小	规格书
26页	481K
描述
Real-Time Clock with NV RAM

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中文翻译

获取价格

数据手册

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DS14285+ 数据手册

DS14285/DS14287

Real-Time Clock with NV RAM

Control Control

www.maxim-ic.com

FEATURES

PIN CONFIGURATIONS

ꢀ Direct Replacement for IBM AT

Computer Clock/Calendar

TOP VIEW

ꢀ Functionally Compatible with the

DS1285/DS1287

V_CCO

V_CC

SQW

CEO

ꢀ Available as Chip (DS14285, DS14285S, or

DS14285Q) or Stand-Alone Module with

Embedded Lithium Battery and Crystal

(DS14287)

AD0

AD1

AD2

CEI

V_BAT

IRQ

RESET

AD3

AD4

ꢀ Automatic Backup Supply and Write

Protection to Make External SRAM

Nonvolatile

AD5

AD6

AD7

GND

R/W

GND

ꢀ Counts Seconds, Minutes, Hours, Days,

Day of the Week, Date, Month, and Year

with Leap Year Compensation Valid Up

to 2100

DIP/SO

ꢀ Binary or BCD Representation of Time,

Calendar, and Alarm

28 27 26

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

12-Hour Mode

AD0

CEI

AD1

AD2

V_BAT

IRQ

DS14285

ꢀ Daylight Saving Time Option

ꢀ Multiplex Bus for Pin Efficiency

ꢀ Interfaced with Software as 128 RAM

Locations

AD3

AD4

AD5

N.C.

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

PLCC

ꢀ Bus-Compatible Interrupt Signals (IRQ)

ꢀ Three Interrupts are Separately Software-

Maskable and Testable

V_CC

V_CCO

N.C.

AD0

AD1

AD2

SQW

CEO

CEI

DS14287

Time-of-Day Alarm Once/Second to

Once/Day

N.C.

IRQ

RESET

N.C.

R/W

Periodic Rates from 122µs to 500ms

End of Clock Update Cycle

AD3

AD4

AD5

AD6

AD7

ꢀ Optional Industrial Temperature Version

Available: DS14285 DIP, SO, and PLCC

GND

Encapsulated Package

1 of 26

REV: 112105

12 3 4 5 6 7...26

中文翻译

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与DS14285+相关器件

型号	品牌	获取价格	描述	数据表
DS14285-DS14287	DALLAS	获取价格	Real Time Clock with NV RAM Control
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