Electronic Components Datasheet Search |
|
EM4150A5WP27 Datasheet(PDF) 4 Page - EM Microelectronic - MARIN SA |
|
EM4150A5WP27 Datasheet(HTML) 4 Page - EM Microelectronic - MARIN SA |
4 / 14 page R EM4150 EM4350 Block Diagram Control Logic Modulator Encoder Power Control Clock Extractor Sequencer Data Extractor Command Decoder EEPROM ROM +V GND Coil 2 Coil 1 Serial Data Reset Write Enable Cs Cr AC/DC converte r Voltage Regulation VDD Fig. 4 Functional Description General The EM4150 is supplied by means of an electromagnetic field induced on the attached coil. The AC voltage is rectified in order to provide a DC internal supply voltage. When the DC voltage crosses the Power-On level, the chip enters the Standard Read Mode and sends data continuously. The data to be sent in this mode is user defined by storing the first and last addresses to be output. When the last address is sent, the chip will continue with the first address until the transceiver sends a request. In the read mode, a Listen Window (LIW) is generated before each word. During this time, the EM4150 will turn to the Receive Mode (RM) if it receives a valid RM pattern. The chip then expects a valid command. Mode of Operation Standard Read Mode Send word Power-On Write Word Write Password Selective Read Login Yes No Receive Mode request ? Reset Get Command Execute Command Init Fig. 5 Memory Organisation The 1024 bit EEPROM is organised in 32 words of 32 bits. The first three words are assigned to the Password, the Protection word, and the Control word. In order to write one of these three words, it is necessary to send the valid password. At fabrication, the EM4150 comes with all bits of the password programmed to a logic "0". The Password cannot be read out. The memory contains two extra words of Laser ROM. These words are laser programmed during fabrication for every chip, are unique and cannot be altered. Memory Map Protection Word 0 - 7 8 - 15 16 - 23 24 - 31 Password Write Only - NO Read Access Device Identification Word & Serial Number Word Laser Programmed - Read Only First Word Read Protected Last Word Read Protected First Word Write Inhibited Last Word Write Inhibited Control Word First Word Read Last Word Read Password Check On/Off Read After Write On/Off User available 0 - 7 8 - 15 16 17 18 - 31 On means bit set to logic '1' Off means bit set to logic '0' Bit 0 Bit 31 928 Bits of USER EEPROM PASSWORD PROTECTION WORD CONTROL WORD DEVICE SERIAL NUMBER DEVICE IDENTIFICATION Word 0 1 2 31 32 33 EE EE EE EE Laser Laser Fig. 6 Copyright © 2004, EM Microelectronic-Marin SA 4 www.emmicroelectronic.com |
Similar Part No. - EM4150A5WP27 |
|
Similar Description - EM4150A5WP27 |
|
|
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 |