Electronic Components Datasheet Search |
|
DS28EC20+T Datasheet(PDF) 4 Page - Dallas Semiconductor |
|
DS28EC20+T Datasheet(HTML) 4 Page - Dallas Semiconductor |
4 / 24 page DS28EC20: 20Kb 1-Wire EEPROM 4 of 24 PIN DESCRIPTION NAME FUNCTION I/O 1-Wire Bus Interface. Open drain, requires external pullup resistor. GND Ground Reference N.C. Not Connected DESCRIPTION The DS28EC20 combines 20Kb of data EEPROM with a fully featured 1-Wire interface in a single chip. The memory is organized as 80 pages of 256 bits each. In addition, the device has one page for control functions such as permanent write protection and EPROM-Emulation mode for individual 2048-bit (8-page) memory blocks. A volatile 256-bit memory page called the scratchpad acts as a buffer when writing data to the EEPROM to ensure data integrity. Data is first written to the scratchpad, from which it can be read back for verification before transferring it to the EEPROM. The operation of the DS28EC20 is controlled over the single-conductor 1-Wire bus. Device communication follows the standard 1-Wire protocol. The energy required to read and write the DS28EC20 is derived entirely from the 1-Wire communication line. Each DS28EC20 has its own unalterable and unique 64-bit registration number. The registration number guarantees unique identification and is used to address the device in a multidrop 1-Wire net environment. Multiple DS28EC20 devices can reside on a common 1-Wire bus and be operated independently of each other. Applications of the DS28EC20 include device authentication, analog-sensor calibration such as IEEE-P1451.4 Smart Sensors TEDS, ink and toner print cartridge identification, medical-sensor calibration data storage, PC board identification, and data for self-configuration of central office switches, wireless base stations, PBXs, or other modular-based rack systems. The DS28EC20 provides a high degree of backward compatibility with the DS2433. Besides the different family codes, the only protocol change that is required on an existing DS2433 implementation is a lengthening of the programming duration (tPROG) from 5ms to 10ms. Figure 1. Block Diagram I/O 64-Bit Registration # 1-Wire Function Control Memory Function Control Unit Parasite Power 32-Byte Scratchpad Data Memory 80 Pages of 32 Bytes each CRC16 Generator Special Function Registers DS28EC20 |
Similar Part No. - DS28EC20+T |
|
Similar Description - DS28EC20+T |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |