Datasheet > DS1747_12

DS1747_12

更新时间： 2024-11-26 07:16:51

品牌	Logo	应用领域
美信 - MAXIM		时钟
页数	文件大小	规格书
16页	573K
描述
Y2K-Compliant, Nonvolatile Timekeeping RAMs

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数据手册

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DS1747_12 数据手册

19-5504; Rev 3/12

DS1747/DS1747P

Y2K-Compliant, Nonvolatile Timekeeping RAMs

FEATURES

PIN CONFIGURATIONS

. Integrated NV SRAM, Real-Time Clock

(RTC), Crystal, Power-Fail Control

Circuit, and Lithium Energy Source

TOP VIEW

A18

V_CC

A15

A17

A13

A11

A16

A14

A12

Maxim

DS1747

. Clock Registers are Accessed Identically to

the Static RAM. These Registers are

Resident in the Eight Top RAM Locations

. Century Byte Register (Y2K Compliant)

. Totally Nonvolatile with Over 10 Years of

Operation in the Absence of Power

A10

. BCD-Coded Century, Year, Month, Date,

Day, Hours, Minutes, and Seconds with

Automatic Leap Year Compensation Valid

Up to the Year 2100

DQ7

DQ6

DQ0

DQ1

DQ2

DQ5

DQ4

DQ3

. Battery Voltage-Level Indicator Flag

GND

. Power-Fail Write Protection Allows for

Encapsulated DIP

(512k x 8)

±10% V_CCPower-Supply Tolerance

. Lithium Energy Source is Electrically

Disconnected to Retain Freshness Until

Power is Applied for the First Time

A18

A17

A14

N.C.

A15

A16

RST

V_CC

Maxim

DS1747P

. DIP Module Only:

A13

A12

A11

A10

Standard JEDEC Byte-Wide 512k x 8 Static

RAM Pinout

DQ7

. PowerCap Module Board Only:

Surface-Mountable Package for Direct

Connection to PowerCap Containing

Battery and Crystal

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

GND

V_BAT

GND

Replaceable Battery (PowerCap)

Power-On Reset Output

Pin-for-Pin Compatible with Other Densities

of DS174xP Timekeeping RAM

PowerCap Module Board

(Uses DS9034PCX+ or DS9034I-PCX+ PowerCap)

. Also Available in Industrial Temperature

Range: -40°C to +85°C

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

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