Datasheet > DS1855B-020

DS1855B-020

更新时间： 2022-11-26 01:17:17

品牌	Logo	应用领域
达拉斯 - DALLAS		电位器存储
页数	文件大小	规格书
20页	252K
描述
Dual Nonvolatile Digital Potentiometer and Secure Memory

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DS1855B-020 数据手册

DS1855

Dual Nonvolatile Digital Potentiometer

and Secure Memory

www.maxim-ic.com

FEATURES

C Two linear taper potentiometers

ꢀ DS1855-010 (one 10k, 100 position and

one 10k, 256 position)

SDA

SCL

Vcc

ꢀ DS1855-020 (one 10k, 100 position and

one 20k, 256 position)

ꢀ DS1855-050 (one 10k, 100 position and

one 50k, 256 position)

GND

ꢀ DS1855-100 (one 10k, 100 position and

one 100k, 256 position)

14-Pin TSSOP (173-mil)

Top View

C 256 bytes of EEPROM memory

C Access to data and potentiometer control via

a 2-wire interface

C External write-protect pin to protect data and

potentiometer settings

C Data and potentiometer settings also can be

write-protected through software control

C Nonvolatile wiper storage

C Operates from 3V or 5V supplies

C Packaging: 14-pin TSSOP, 16-ball STPBGA,

flip-chip package

C Industrial operating temperature:

-40ºC to +85ºC

16-Ball STPBGA (4mm x 4mm)

14-Pin Flip Chip (100-mil x 100-mil)

(Not Shown)

C Programming temperature: 0ºC to +85ºC

DESCRIPTION

The DS1855 dual nonvolatile (NV) digital potentiometer and secure memory consists of oneꢁ100-position

linear taper potentiometer, oneꢁ256-position linear taper potentiometer, 256 bytes of EEPROM memory,

and a 2-wire interface. The DS1855, which features a new software write protect, is an upgrade of the

DS1845. The DS1855 provides an ideal method for setting bias voltages and currents in control

applications using a minimum of circuitry. The EEPROM memory allows a user to store configuration or

calibration data for a specific system or device as well as provide control of the potentiometer wiper

settings. Any type of user information may reside in the first 248 bytes of this memory. The next two

addresses of EEPROM memory are for potentiometer settings and the remaining 6 bytes of memory are

reserved. These reserved and potentiometer registers should not be used for data storage. Access to this

EEPROM is via an industry-standard 2-wire bus. The interface I/O pins consist of SDA and SCL. The

wiper position of the DS1855, as well as EEPROM data, can be write-protected through hardware using

the

write-protect

input

(WP)

software

using

the

2-wire

interface.

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与DS1855B-020相关器件

型号	品牌	描述	获取价格	数据表
DS1855B-050	DALLAS	Dual Nonvolatile Digital Potentiometer and Secure Memory	获取价格
DS1855B-100	DALLAS	Dual Nonvolatile Digital Potentiometer and Secure Memory	获取价格
DS1855B-100+	MAXIM	Digital Potentiometer, 2 Func, 100000ohm, 2-wire Serial Control Interface, 256 Positions,	获取价格
DS1855E-010	DALLAS	Dual Nonvolatile Digital Potentiometer and Secure Memory	获取价格
DS1855E-010/R	DALLAS	Dual Nonvolatile Digital Potentiometer and Secure Memory	获取价格
DS1855E-010/T	DALLAS	Dual Nonvolatile Digital Potentiometer and Secure Memory	获取价格