 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SST39VF3202C Datasheet(PDF) 9 Page - Silicon Storage Technology, Inc |
|
||||||||||||||||||||||||||||||
SST39VF3202C Datasheet(HTML) 9 Page - Silicon Storage Technology, Inc |
|
|
9 / 37 page  ©2011 Silicon Storage Technology, Inc. DS25020A 06/11 9 32 Mbit Multi-Purpose Flash Plus SST39VF3201C / SST39VF3202C Preliminary Specifications A Microchip Technology Company ure 12 for timing waveforms and Figure 25 for the flowchart. Any commands issued during the Sector- or Block-Erase operation are ignored. When WP# is low, any attempt to Sector- (Block-) Erase the pro- tected block will be ignored. During the command sequence, WP# should be statically held high or low. Erase-Suspend/Erase-Resume Commands The Erase-Suspend operation temporarily suspends a Sector- or Block-Erase operation thus allowing data to be read from any memory location, or program data into any sector/block that is not suspended for an Erase operation. The operation is executed by issuing one byte command sequence with Erase- Suspend command (B0H). The device automatically enters read mode typically within 10 µs after the Erase-Suspend command had been issued. Valid data can be read from any sector or block that is not suspended from an Erase operation. Reading at address location within erase-suspended sectors/ blocks will output DQ2 toggling and DQ6 at ‘1’. While in Erase-Suspend mode, a Word-Program opera- tion is allowed except for the sector or block selected for Erase-Suspend. To resume Sector-Erase or Block-Erase operation which has been suspended the system must issue Erase Resume command. The operation is executed by issuing one byte command sequence with Erase Resume command (30H) at any address in the last Byte sequence. Chip-Erase Operation The SST39VF3201C/3202C provide a Chip-Erase operation, which allows the user to erase the entire memory array to the “1” state. This is useful when the entire device must be quickly erased. The Chip-Erase operation is initiated by executing a six-byte command sequence with Chip-Erase command (10H) at address 555H in the last byte sequence. The Erase operation begins with the rising edge of the sixth WE# or CE#, whichever occurs first. During the Erase operation, the only valid read is Toggle Bit or Data# Polling. See Table 7 for the command sequence, Figure 10 for timing diagram, and Figure 25 for the flowchart. Any commands issued during the Chip-Erase operation are ignored. When WP# is low, any attempt to Chip-Erase will be ignored. During the command sequence, WP# should be statically held high or low. Write Operation Status Detection The SST39VF3201C/3202C provide two software means to detect the completion of a Write (Program or Erase) cycle, in order to optimize the system write cycle time. The software detection includes two status bits: Data# Polling (DQ7) and Toggle Bit (DQ6). The End-of-Write detection mode is enabled after the rising edge of WE#, which initiates the internal Program or Erase operation. The actual completion of the nonvolatile write is asynchronous with the system; therefore, either a Data# Polling or Toggle Bit read may be simultaneous with the completion of the write cycle. If this occurs, the system may possibly get an erroneous result, i.e., valid data may appear to conflict with either DQ7 or DQ6. In order to prevent spurious rejection, if an erroneous result occurs, the software routine should include a loop to read the accessed location an additional two (2) times. If both reads are valid, then the device has completed the Write cycle, otherwise the rejection is valid. |
Similar Part No. - SST39VF3202C |
|
Similar Description - SST39VF3202C |
|
|
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
