 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AT45DB081D Datasheet(PDF) 26 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT45DB081D Datasheet(HTML) 26 Page - ATMEL Corporation |
|
|
26 / 54 page  26 3596L–DFLASH–04/09 AT45DB081D 14. Manufacturer and Device ID Read Identification information can be read from the device to enable systems to electronically query and identify the device while it is in system. The identification method and the command opcode comply with the JEDEC standard for “Manufacturer and Device ID Read Methodology for SPI Compatible Serial Interface Memory Devices”. The type of information that can be read from the device includes the JEDEC defined Manufacturer ID, the vendor specific Device ID, and the ven- dor specific Extended Device Information. To read the identification information, the CS pin must first be asserted and the opcode of 9FH must be clocked into the device. After the opcode has been clocked in, the device will begin out- putting the identification data on the SO pin during the subsequent clock cycles. The first byte that will be output will be the Manufacturer ID followed by two bytes of Device ID information. The fourth byte output will be the Extended Device Information String Length, which will be 00H indicating that no Extended Device Information follows. As indicated in the JEDEC standard, reading the Extended Device Information String Length and any subsequent data is optional. Deasserting the CS pin will terminate the Manufacturer and Device ID Read operation and put the SO pin into a high-impedance state. The CS pin can be deasserted at any time and does not require that a full byte of data be read. 14.1 Manufacturer and Device ID Information 14.1.1 Byte 1 – Manufacturer ID Hex Value JEDEC Assigned Code Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 1FH 0 0 0 1 1 1 1 1 Manufacturer ID 1FH = Atmel 14.1.2 Byte 2 – Device ID (Part 1) Hex Value Family Code Density Code Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Family Code 001 = DataFlash 25H 0 0 1 0 0 1 0 1 Density Code 00101 = 8-Mbit 14.1.3 Byte 3 – Device ID (Part 2) Hex Value MLC Code Product Version Code Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MLC Code 000 = 1-bit/Cell Technology 00H 0 0 0 0 0 0 0 0 Product Version 00000 = Initial Version 14.1.4 Byte 4 – Extended Device Information String Length Hex Value Byte Count Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 00H 0 0 0 0 0 0 0 0 Byte Count 00H = 0 Bytes of Information 9FH Manufacturer ID Byte n Device ID Byte 1 Device ID Byte 2 This information would only be output if the Extended Device Information String Length value was something other than 00H. Extended Device Information String Length Extended Device Information Byte x Extended Device Information Byte x + 1 CS 1FH 25H 00H 00H Data Data SI SO Opcode Each transition represents 8 bits |
Similar Part No. - AT45DB081D_09 |
|
Similar Description - AT45DB081D_09 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
