Datasheet > DS16440120+

DS16440120+

更新时间： 2024-11-18 22:36:27

品牌	Logo	应用领域
达拉斯 - DALLAS		时钟
页数	文件大小	规格书
13页	303K
描述
Nonvolatile Timekeeping RAM

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中文翻译

获取价格

数据手册

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DS16440120+ 数据手册

DS1644/DS1644P

Nonvolatile Timekeeping RAM

www.maxim-ic.com

FEATURES

PIN CONFIGURATIONS

V_CC

A13

A14

CꢀIntegrated NV SRAM, Real-Time Clock,

Crystal, Power-Fail Control Circuit and

Lithium Energy Source

A12

CꢀClock Registers are Accessed Identically to

A11

A10

DQ7

DQ6

DQ5

DQ4

DQ3

the Static RAM. These Registers are

Resident in the Eight Top RAM Locations.

CꢀTotally Nonvolatile with Over 10 Years of

Operation in the Absence of Power

DQ0

DQ1

DQ2

GND

CꢀBCD-Coded Year, Month, Date, Day, Hours,

Minutes, and Seconds with Leap Year

Compensation Valid Up to 2100

28-Pin Encapsulated Package

(720-mil Extended)

CꢀPower-Fail Write Protection Allows for

±10% V_CCPower Supply Tolerance

CꢀDS1644 Only (DIP Module)

A14

Upward Compatible with the DS1643

Timekeeping RAM to Achieve Higher

RAM Density

A13

A12

A11

A10

PFO

V_CC

Standard JEDEC Bytewide 32k x 8 Static

RAM Pinout

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

GND

CꢀDS1644P Only (PowerCap^®Module Board)

Surface Mountable Package for Direct

Connection to PowerCap Containing

Battery and crystal

X1 GND V_BAT

Replaceable Battery (PowerCap)

Power-Fail Output

34-Pin PowerCap Module Board

(Uses DS9034PCX PowerCap)

Pin-for-Pin Compatible with Other Densities

of DS164XP Timekeeping RAM

Underwriters Laboratory (UL) Recognized

PowerCap is a registered trademark of Dallas Semiconductor.

ORDERING INFORMATION

VOLTAGE

PART

TEMP RANGE PIN-PACKAGE

TOP MARK

RANGE (V)

DS16440120+

DS16440-120

DS1644P120+

DS1644P-120

5.0

0°C to +70°C 32 EDIP (0.740a)

DS1644+120

DS1644-120

DS1644P+120

DS1644P-120

0°C to +70°C 32 EDIP (0.740a)

0°C to +70°C 34 PowerCap*

*DS9034-PCX, DS9034I-PCX, DS9034-PCX+ required (must be ordered separately).

A “+" indicates a lead-free product. The top mark will include a “+" symbol on lead-free devices.

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REV: 040805

12 3 4 5 6 7...13

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与DS16440120+相关器件

型号	品牌	获取价格	描述	数据表
DS1644-12	DALLAS	获取价格	Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28,
DS1644-120	DALLAS	获取价格	Nonvolatile Timekeeping RAM
DS1644-120+	MAXIM	获取价格	Nonvolatile Timekeeping RAM
DS1644-15	DALLAS	获取价格	Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28,
DS1644-150	MAXIM	获取价格	Timer or RTC, Non-Volatile, CMOS, PDIP28
DS1644-150	DALLAS	获取价格	Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, MODULE, DIP-28
DS1644J	ETC	获取价格	Quad Clock Driver
DS1644J/883	TI	获取价格	IC,1:4 OUTPUT,BIPOLAR,DIP,16PIN,CERAMIC
DS1644J/883B	TI	获取价格	IC,1:4 OUTPUT,BIPOLAR,DIP,16PIN,CERAMIC
DS1644J/883C	TI	获取价格	IC,1:4 OUTPUT,BIPOLAR,DIP,16PIN,CERAMIC