Electronic Components Datasheet Search |
|
DS2431+T Datasheet(PDF) 7 Page - Maxim Integrated Products |
|
DS2431+T Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 27 page 1024-Bit, 1-Wire EEPROM _______________________________________________________________________________________ 7 Memory Access Data memory and registers are located in a linear address space, as shown in Figure 5. The data memo- ry and the registers have unrestricted read access. The DS2431 EEPROM array consists of 18 rows of 8 bytes each. The first 16 rows are divided equally into four memory pages (32 bytes each). These four pages are the primary data memory. Each page can be indi- vidually set to open (unprotected), write protected, or EPROM mode by setting the associated protection byte in the register row. As a factory default, the entire data memory is unprotected and its contents are unde- fined. The last two rows contain protection registers and reserved bytes. The register row consists of 4 pro- tection control bytes, a copy-protection byte, the facto- ry byte, and 2 user byte/manufacture ID bytes. The manufacturer ID can be a customer-supplied identifi- cation code that assists the application software in identifying the product the DS2431 is associated with. 1ST STAGE 2ND STAGE 3RD STAGE 4TH STAGE 7TH STAGE 8TH STAGE 6TH STAGE 5TH STAGE X0 X1 X2 X3 X4 POLYNOMIAL = X8 + X5 + X4 + 1 INPUT DATA X5 X6 X7 X8 Figure 4. 1-Wire CRC Generator ADDRESS RANGE TYPE DESCRIPTION PROTECTION CODES 0000h to 001Fh R/(W) Data Memory Page 0 — 0020h to 003Fh R/(W) Data Memory Page 1 — 0040h to 005Fh R/(W) Data Memory Page 2 — 0060h to 007Fh R/(W) Data Memory Page 3 — 0080h* R/(W) Protection Control Byte Page 0 55h: Write Protect P0; AAh: EPROM Mode P0; 55h or AAh: Write Protect 80h 0081h* R/(W) Protection Control Byte Page 1 55h: Write Protect P1; AAh: EPROM Mode P1; 55h or AAh: Write Protect 81h 0082h* R/(W) Protection Control Byte Page 2 55h: Write Protect P2; AAh: EPROM Mode P2; 55h or AAh: Write Protect 82h 0083h* R/(W) Protection Control Byte Page 3 55h: Write Protect P3; AAh: EPROM Mode P3; 55h or AAh: Write Protect 83h 0084h* R/(W) Copy Protection Byte 55h or AAh: Copy Protect 0080h:008Fh, and Any Write-Protected Pages 0085h R Factory Byte. Set at Factory. AAh: Write Protect 85h, 86h, 87h; 55h: Write Protect 85h; Unprotect 86h, 87h 0086h R/(W) User Byte/Manufacturer ID — 0087h R/(W) User Byte/Manufacturer ID — 0088h to 008Fh — Reserved — Figure 5. Memory Map * Once programmed to AAh or 55h this address becomes read only. All other codes can be stored, but neither write protect the address nor activate any function. |
Similar Part No. - DS2431+T |
|
Similar Description - DS2431+T |
|
|
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 |