w19b320b Winbond Electronics Corp America, w19b320b Datasheet - Page 33

• Manufacturer Part Number: w19b320b
• Description: W19b320bt/b Datasheet
• Manufacturer: Winbond Electronics Corp America

Notes:
7.6.5
Notes:
7.7
Standard
Suspend
Erase
Mode
Mode
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
8. The fourth cycle of the AUTOSELECT command sequence is a read cycle. Data bits DQ15-DQ8 are don’t care. See the
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
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
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
3. When reading write operation status bits, the system must always provide the bank address where the Embedded
Suspend) when the device is in the AUTOSELECT mode, or if DQ5 goes high (while the device is providing status
information).
AUTOSELECT Command Sequence section for more information.
Suspend mode. The Erase Suspend command is valid only during a sector erase operation.
limits. Refer to DQ5 description section for more information.
details.
Algorithm is in progress. The device outputs array data if the system addresses a non-busy bank.
Temporary Sector Unprotect Algorithm
Write Operation Status
Erase-Suspend-Program
Suspend
Erase-
STATUS
Read
Embedded Program
Embedded Erase
Algorithm
Algorithm
Suspended
Suspended
Non-Erase
Sector
Sector
Erase
(NOTE 2)
#DQ7
#DQ7
DQ7
Data
0
1
No toggle
Toggle
Toggle
Toggle
DQ6
Data
- 33 -
W19B320BT/B DATASHEET
(NOTE1)
DQ5
Data
0
0
0
0
Publication Release Date:Dec. 25, 2007
DQ3
Data
N/A
N/A
N/A
1
(NOTE 2)
No toggle
Toggle
Toggle
DQ2
Data
N/A
Revisionv A3
RY/#BY
0
0
1
1
0