поискавой системы для электроныых деталей |
|
TC58FVB160AXB датащи(PDF) 9 Page - Toshiba Semiconductor |
|
TC58FVB160AXB датащи(HTML) 9 Page - Toshiba Semiconductor |
9 / 41 page TC58FVT160/B160AFT/AXB-70,-10 2002-08-06 9/41 Auto Chip Erase Mode The Auto Chip Erase Mode is set using the Chip Erase command. An Auto Chip Erase operation starts on the rising edge of WE in the sixth bus cycle. All memory cells are automatically preprogrammed to 0, erased and verified as erased by the chip. The device status is indicated by the Hardware Sequence flag. Command input is ignored during an Auto Chip Erase. A hardware reset can interrupt an Auto Chip Erase operation. If an Auto Chip Erase operation is interrupted, it cannot be completed correctly. Hence an additional Erase operation must be performed. Any attempt to erase a protected block is ignored. If all blocks are protected, the Auto Erase operation will not be executed and the device will enter Read mode 100 µs after the rising edge of the WE signal in the sixth bus cycle. If an Auto Chip Erase operation fails, the device will remain in the erasing state and will not return to Read Mode. The device status is indicated by the Hardware Sequence flag. Either a Reset command or a hardware reset is required to return the device to Read Mode after a failure. In this case it cannot be ascertained which block the failure occurred in. Either abandon use of the device altogether, or perform a Block Erase on each block, identify the failed block, and stop using it. The host processor must take measures to prevent subsequent use of the failed block. Auto Block Erase / Auto Multi-Block Erase Modes The Auto Block Erase Mode and Auto Multi-Block Erase Mode are set using the Block Erase command. The block address is latched on the falling edge of the WE signal in the sixth bus cycle. The block erase starts as soon as the Erase Hold Time (tBEH) has elapsed after the rising edge of the WE signal. When multiple blocks are erased, the sixth Bus Write cycle is repeated with each block address and Auto Block Erase command being input within the Erase Hold Time (this constitutes an Auto Multi-Block Erase operation). If a command other than an Auto Block Erase command or Erase Suspend command is input during the Erase Hold Time, the device will reset the Command Register and enter Read Mode. The Erase Hold Time restarts on each successive rising edge of WE . Once operation starts, all memory cells in the selected block are automatically preprogrammed to 0, erased and verified as erased by the chip. The device status is indicated by the setting of the Hardware Sequence flag. When the Hardware Sequence flag is read, the addresses of the blocks on which auto-erase operation is being performed must be specified. All commands (except Erase Suspend) are ignored during an Auto Block Erase or Auto Multi-Block Erase operation. Either operation can be aborted using a Hardware Reset. If an auto-erase operation is interrupted, it cannot be completed correctly; therefore, a further erase operation is necessary to complete the erasing. Any attempt to erase a protected block is ignored. If all the selected blocks are protected, the auto-erase operation is not executed and the device returns to Read Mode 100 µs after the rising edge of the WE signal in the last bus cycle. If an auto-erase operation fails, the device remains in Erasing state and does not return to Read Mode. The device status is indicated by the Hardware Sequence flag. After a failure either a Reset command or a Hardware Reset is required to return the device to Read Mode. If multiple blocks are selected, it will not be possible to ascertain the block in which the failure occurred. In this case either abandon use of the device altogether, or perform a Block Erase on each block, identify the failed block, and stop using it. The host processor must take measures to prevent subsequent use of the failed block. |
Аналогичный номер детали - TC58FVB160AXB |
|
Аналогичное описание - TC58FVB160AXB |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю 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 |