AUSTIN SEMICONDUCTOR, INC.
FLASHFLASH
FLASHFLASH
FLASH
AS8FLC2M32
AS8FLC2M32B
Rev. 1.2 5/09
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
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Austin Semiconductor, Inc.
Command Definition Table
*Data is for single byte.
BYTE 1 = DQ0 - DQ7
BYTE 2 = DQ8 - DQ15
BYTE 3 = DQ16 - DQ23
BYTE 4 = DQ24 - DQ31
Add
Data
dd
Data
dd
Data Add
Data Add
Data
dd
Data
Read (Note 5) 1RA RD
Reset (Note 6) 1 XXX F0
Manufacturer ID 4 AAA AA 555 55 AAA 90 X00 1
Device ID, Btm. Boot 4 AAA AA 555 55 AAA 90 X01 37
Sector Protect Verify
4 AAA AA 555 55 AAA 90 (SA) 0
(Note 8)
X04 1
4 AAA AA 555 55 AAA A0 PA PD
3 AAA AA 555 55 AAA 20
2 XXX A0 PA PD
2 XXX 90 XXX 0
6 AAA AA 555 55 AAA 80 AAA AA 555 55 AAA 10
6 AAA AA 555 55 AAA 80 AAA AA 555 55 SA 30
1 XXX B0
1 XXX 30
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 latched on the falling edge of the Wex\ or Cex\ pulse, whichever occurs later.
PD = Data to be programmed at location PA. Data latches on the rising edge of WE# or CE# pulse, whichever occurs later.
SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A20-A13 uniquely select any sector.
Notes:
1.See Table 1 for Valid Bus Operations.
2.All values in hexadecimal.
3.Except when reading array or autoselect data, all bus cycles are write operations
4.Data bits A20-A11 are don’t cares for unlock and command cycles
5.No unlock or command cycles required when reading array data.
6.The Reset command is required to return to reading array data when device is in the autoselect mode, or if DQ% goes high (while the device is providing status data).
7.The fourth cycle of the autoselect command sequence is a read cycle
8.The data is 00h for an unprotected sector and 01h for a protected sector.
9.The Unlock Bypass command is required prior to the Unlock Bypass Program command.
10.The Unlock Bypass Reset command is required to return to reading array data when the device is in the unlock bypass mode.
11. 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.
12. The Erase Resume command is valid only during the Erase Suspend mode.
Bus Cycles (Notes 2-4)
(Note 9)
Cycles
Command Sequence
Note 1
First Second Third Fourth Fifth Sixth
Erase Suspend (Note 11)
Erase Resume (Note 12)
Auto-Select
(Note 7)
Unlock Bypass Reset
(Note 10)
Chip Erase
Sector Erase
Program
Unlock Bypass
Unlock Bypass Program
