W19B320BT Datasheet, PDF (33/56 Pages) Winbond – 2.7~3.6-volt write (program and erase) operations

W19B320BT/B DATASHEET
Notes:
1. See Bus Operations Table for details.
2. All values are in hexadecimal.
3. Except for the read cycle and the fourth cycle of the AUTOSELECT command sequence, all bus cycles are write cycles.
4. Data bits DQ15-DQ8 are don’t care in command sequences, except for RD and PD.
5. Unless otherwise noted, address bits A20-A11 are “don’t care”.
6. No unlock or command cycles required when bank is reading array data.
7. The Reset command is required to return to the read mode (or to the erase-suspend-read mode if previously in Erase
Suspend) when the device is in the AUTOSELECT mode, or if DQ5 goes high (while the device is providing status
information).
8. The fourth cycle of the AUTOSELECT command sequence is a read cycle. Data bits DQ15-DQ8 are don’t care. See the
AUTOSELECT Command Sequence section for more information.
9. The data is 82h for factory locked and 02h for not factory locked.
10. The data is 00h for an unprotected sector/sector block and 01h for a protected sector/sector block.
11. The Unlock Bypass command is required prior to the Unlock Bypass Program command.
12. The Unlock Bypass Reset command is required to return to the read mode when the bank is in the unlock bypass mode.
13. The system may read and program in non-erasing sectors, or enter the AUTOSELECT mode, when in the Erase
Suspend mode. The Erase Suspend command is valid only during a sector erase operation.
14. The Erase Resume command is valid only during the Erase Suspend mode.
15. Command is valid when device is ready to read array data or when device is in AUTOSELECT mode.
16. See Autoselect Codes table for device ID information
7.6.5 Write Operation Status
STATUS
DQ7
(NOTE 2)
Standard
Mode
Embedded Program
Algorithm
Embedded Erase
Algorithm
#DQ7
0
Erase
Suspend
Mode
Erase-
Suspend
Read
Erase
Suspended
Sector
Non-Erase
Suspended
Sector
1
Data
Erase-Suspend-Program #DQ7
DQ6
Toggle
Toggle
No toggle
Data
Toggle
DQ5
(NOTE1)
0
0
0
Data
0
DQ3
N/A
1
N/A
Data
N/A
DQ2
(NOTE 2)
No toggle
RY/#BY
0
Toggle
0
Toggle
1
Data
1
N/A
0
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing
limits. Refer to DQ5 description section for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
3. When reading write operation status bits, the system must always provide the bank address where the Embedded
Algorithm is in progress. The device outputs array data if the system addresses a non-busy bank.
7.7 Temporary Sector Unprotect Algorithm
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Publication Release Date:Dec. 25, 2007
Revisionv A3