Datasheet > DS28EC20

DS28EC20

更新时间： 2023-12-20 18:45:30

品牌	Logo	应用领域
亚德诺 - ADI		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
27页	588K
描述
20Kb 1-Wire EEPROM

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DS28EC20 数据手册

DS28EC20

20Kb 1-Wire EEPROM

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. 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 90kbps

Using 1-Wire Protocol

APPLICATIONS

Device Authentication

IEEE 1451.4 Sensor TEDS

Ink/Toner Cartridges

Medical Sensors

Low-Cost TO-92 Package

Operating Range: 4V to 5.25V, -40°C to +85°C

Operating Range: 3.135V to3.465V,

0°C to +70°C (Standard Speed only)

PCB Identification

Wireless Base Stations

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

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

ORDERING INFORMATION

PART

TEMP RANGE PIN-PACKAGE

PIN CONFIGURATION

DS28EC20+

DS28EC20+T

DS28EC20P+

DS28EC20P+T

DS28EC20Q+T

3 TO-92

-40°C to +85°C

3 TO-92, T&R

6 TSOC

6 TSOC, T&R

6 TDFN, T&R

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

TYPICAL OPERATING CIRCUIT

V_CC

R_PUP(300Ω

to 2.2kΩ)

PX.Y

I/O

DS28EC20

GND

µC

Commands, bytes, and modes are capitalized for clarity.

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

1 of 27

19-6067; Rev 8; 6/21

12 3 4 5 6 7...27

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