FLASH
AS29F010
Austin Semiconductor, Inc.
non-suspended sectors. The system can determine the status reverts to the Erase Suspend mode, and is ready for another
of the program operation using the DQ7 or DQ6 status bits, just valid operation. See “Autoselect Command Sequence” for more
as in the standard program operation. See “Write Operation information.
Status” for more information.
The system must write the Erase Resume command
The system may also write the autoselect command (address bits are “don’t care”) to exit the erase suspend mode
sequence when the device is in the Erase Suspend mode. The and continue the sector erase operation. Further writes of the
device allows reading autoselect codes even at addresses within Resume command are ignored. Another Erase Suspend
erasing sectors, since the codes are not stored in the memory command can be written after the device has resumed erasing.
array. When the device exits the autoselect mode, the device
TABLE 4: Command Definitions
2,3
Bus Cycles
Third
1
Command Sequence
First
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
RA RD
Second
Fourth
Fifth
Sixth
4
1
1
3
Read
5
6
XXXX F0
Reset
Reset
555
AA
2AA
55
555
F0
Manufacturer ID
Device ID
4
4
555
555
AA
AA
2AA
2AA
55
55
555
555
90
90
X00
X01
1
20
7
Autoselect
(SA)
X02
0
8
4
555
AA
2AA
55
555
90
Sector Protect Verify
1
Program
Chip Erase
Sector Erase
4
6
6
555
555
555
AA
AA
AA
2AA
2AA
2AA
55
55
55
555
555
555
A0
80
80
PA
555
555
PD
AA
AA
2AA
2AA
55
55
555
SA
10
30
9
1
1
XXX
XXX
B0
30
Erase Suspend
10
Erase Resume
LEGEND:
X = Don’t Care
RA = Address of the memory location to be read
RD = Data read from location RA during read operation
PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE\ or CE\ pulse, whichever happens later
PD = Data to be programmed at location PA. Data latches on the rising edge of WE\ or CE\ pulse, whichever happens first
SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A16-A14 uniquely select any sector.
NOTES:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all command bus cycles are write operations.
4. No unlock or command cycles required when reading array data.
5. The Reset command is required to return to reading array data when device is in the autoselect mode, or if DQ5 goes high (while the device is
providing status data).
6. The device accepts the three-cycle reset command sequence for backward compatibility.
7. The fourth cycle of the autoselect command sequence is a read operation.
8. The data is 00h for an unprotected sector and 01h for a protected sector. See “Autoselect Command Sequence” for more information.
9. The system may read 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.
10. The Erase Resume command is valid only during the Erase Suspend mode.
AS29F010
AustinSemiconductor,Inc.reservestherighttochangeproductsorspecificationswithoutnotice.
Rev. 0.3 10/02
9
AUSTIN [ AUSTIN SEMICONDUCTOR ]
