Datasheet > DS28EC20

DS28EC20

更新时间： 2024-11-23 04:15:15

品牌	Logo	应用领域
达拉斯 - DALLAS		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
24页	228K
描述
20Kb 1-Wire EEPROM

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中文翻译

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DS28EC20 数据手册

DS28EC20

20Kb 1-Wire EEPROM

www.maxim-ic.com

GENERAL DESCRIPTION

FEATURES

The DS28EC20 is a 20480-bit, 1-Wire^®EEPROM

organized as 80 memory pages of 256 bits each. An

additional page is set aside for control functions.

Data is written to a 32-byte scratchpad, verified, and

then copied to the EEPROM memory. As a special

feature, blocks of eight memory pages can be write

protected or put in EPROM-Emulation mode, where

bits can only be changed from a 1 to a 0 state. The

DS28EC20 communicates over the single-conductor

1-Wire bus. The communication follows the standard

1-Wire protocol. Each device has its own unalterable

and unique 64-bit ROM registration number that is

factory lasered into the chip. The registration number

is used to address the device in a multidrop 1-Wire

net environment.

20480 Bits of Nonvolatile (NV) EEPROM

Partitioned into Eighty 256-Bit Pages

Individual 8-Page Groups of Memory Pages

(Blocks) can be Permanently Write Protected or

Put in OTP EPROM-Emulation Mode ("Write to

0")

Read and Write Access Highly Backward-

Compatible to Legacy Devices (e.g., DS2433)

256-Bit Scratchpad with Strict Read/Write

Protocols Ensures Integrity of Data Transfer

200k Write/Erase Cycle Endurance at +25°C

Unique Factory-Programmed 64-Bit Registration

Number Ensures Error-Free Device Selection

and Absolute Part Identity

Switchpoint Hysteresis and Filtering to Optimize

Performance in the Presence of Noise

Communicates to Host at 15.4kbps or 125kbps

Using 1-Wire Protocol

APPLICATIONS

Device Authentication

IEEE 1451.4 Sensor TEDS

Ink/Toner Cartridges

Medical Sensors

Low-Cost TO-92 Package

Operating Range: 5V ±5%, -40°C to +85°C

IEC 1000-4-2 Level 4 ESD Protection (8kV

Contact, 15kV Air, Typical) for I/O Pin

PCB Identification

Wireless Base Stations

PIN CONFIGURATION

ORDERING INFORMATION

PIN-

PACKAGE

PART

TEMP RANGE

PIN 1 ---------- GND

DALLAS

28EC20

PIN 2 ---------- I/O

PIN 3 ---------- N.C.

DS28EC20+

3 TO-92

-40°C to +85°C

DS28EC20+T

3 TO-92, T&R

+ Denotes a lead-free package.

T = tape and reel

FOR TAPE-AND-

REEL THE LEADS

ARE FORMED TO

100 MILS (2.54mm)

SPACING VERSUS

50 MILS (1.27mm)

FOR BULK.

TYPICAL OPERATING CIRCUIT

V_CC

R_PUP(300Ω

to 2.2kΩ)

BOTTOM VIEW

PX.Y

I/O

DS28EC20

GND

µC

Commands, bytes, and modes are capitalized for

clarity.

1-Wire is a registered trademark of Dallas Semiconductor Corp., a

wholly owned subsidiary of Maxim Integrated products, Inc.

1 of 24

REV: 071007

12 3 4 5 6 7...24

中文翻译

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与DS28EC20相关器件

型号	品牌	获取价格	描述	数据表
DS28EC20 T	MAXIM	获取价格	DS28EC20_1203
DS28EC20_11	MAXIM	获取价格	20Kb 1-Wire EEPROM
DS28EC20_1203	MAXIM	获取价格	DS28EC20_1203
DS28EC20+	MAXIM	获取价格	20Kb 1-Wire EEPROM
DS28EC20+	DALLAS	获取价格	20Kb 1-Wire EEPROM
DS28EC20+T	DALLAS	获取价格	20Kb 1-Wire EEPROM
DS28EC20+T	MAXIM	获取价格	20Kb 1-Wire EEPROM
DS28EC20P	MAXIM	获取价格	DS28EC20_1203
DS28EC20P T	MAXIM	获取价格	DS28EC20_1203
DS28EC20P+	MAXIM	获取价格	20Kb 1-Wire EEPROM

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