 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
M28W320CT85ZB1T Datasheet(PDF) 9 Page - STMicroelectronics |
|
||||||||||||||||||||||||||||||
M28W320CT85ZB1T Datasheet(HTML) 9 Page - STMicroelectronics |
|
|
9 / 42 page  9/42 M28W320CT, M28W320CB INSTRUCTIONS AND COMMANDS Sixteen instructions are available (see Tables 9 and 10) to perform Read Memory Array, Read Sta- tus Register, Read Electronic Signature, CFI Que- ry, Erase, Program, Double Word Program, Clear Status Register, Program/Erase Suspend, Pro- gram/Erase Resume, Block Protect, Block Unpro- tect, Block Lock and Protection Register Program. Status Register output may be read at any time, during programming or erase, to monitor the progress of the operation. An internal Command Interface (C.I.) decodes the instructions while an internal Program/Erase Con- troller (P/E.C.) handles all timing and verifies the correct execution of the Program and Erase in- structions. P/E.C. provides a Status Register whose bits indicate operation and exit status of the internal algorithms. The Command Interface is reset to Read Array when power is first applied, when exiting from Re- set or whenever VDD is lower than VLKO. Com- mand sequence must be followed exactly. Any invalid combination of commands will reset the de- vice to Read Array. Read (RD) The Read instruction consists of one write cycle (refer to Device Operations section) giving the command FFh. Next read operations will read the addressed location and output the data. When a device reset occurs, the memory is in Read Array as default. Read Status Register (RSR) The Status Register indicates when a program or erase operation is complete and the success or failure of operation itself. Issue a Read Status Register Instruction (70h) to read the Status Reg- ister content. The Read Status Register instruction may be issued at any time, also when a Program/ Erase operation is ongoing. The following Read operations output the content of the Status Regis- ter. The Status Register is latched on the falling edge of E or G signals, and can be read until E or G returns to VIH. Either E or G must be toggled to update the latched data. Additionally, any read at- tempt during program or erase operation will auto- matically output the content of the Status Register. Read Electronic Signature (RSIG) The Read Electronic Signature instruction con- sists of one write cycle (refer to Device Operations section) giving the command 90h. A subsequent read will output the Manufacturer Code, the De- vice Code, the Block protection Status, or the Pro- tection Register. See Tables 6, 7 and 8 for the valid address. The Electronic Signature can be read from the memory allowing programming equipment or applications to automatically match their interface to the characteristics of M28W320C. CFI Query (RCFI) The Common Flash Interface Query mode is en- tered by writing 98h. Next read operations will read the CFI data. The CFI data structure contains also a security area; in this section, a 64 bit unique se- curity number is written, starting at this address 81h. This area can be accessed only in read mode and there are no ways of changing the code after it has been written by ST. Write a read instruction to return to Read mode (refer to the Common Flash Interface section). Table 9. Commands Hex Code Command 00h Invalid/Reserved 10h Alternative Program Set-up 20h Erase Set-up 30h Double Word Program Set-up 40h Program Set-up 50h Clear Status Register 70h Read Status Register 90h or 98h Read Electronic Signature, or CFI Query B0h Program/Erase Suspend D0h Program/Erase Resume, Erase Confirm or Unprotect Confirm FFh Read Array 01h Protect Confirm 2Fh Lock Confirm C0h Protection Program 60h Protection Set-up |
Similar Part No. - M28W320CT85ZB1T |
|
Similar Description - M28W320CT85ZB1T |
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
