as29lv016brg-90/xt Austin Semiconductor, Inc., as29lv016brg-90/xt Datasheet - Page 21

• Manufacturer Part Number: as29lv016brg-90/xt
• Description: 16 Megabit 2m X 8-bit / 1m X 16-bit Cmos 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: Austin Semiconductor, Inc.

TABLE 9: COMMAND DEFINITIONS
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
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 A19–A12 uniquely select any sector.
Note:
1. See Table 1 for description of bus operations.
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 cares for unlock and command cycles.
5. Address bits A19–A11 are don’t cares for unlock and command cycles, unless SA or PA required.
6. No unlock or command cycles required when reading array data.
7. The Reset command is required to return to reading array data when device is in the autoselect mode, or if DQ5 goes high (while
8. The fourth cycle of the autoselect command sequence is a read cycle.
9. The data is 00h for an unprotected sector and 01h for a protected sector. See “Autoselect Command Sequence” for more
10. Command is valid when device is ready to read array data or when device is in autoselect mode.
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 reading array data when the device is in the unlock bypass mode. F0
13. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode. The
14. The Erase Resume command is valid only during the Erase Suspend mode.
AS29LV016
Rev. 2.0 06/06
Read
Reset
CFI Query
Program
Unlock Bypass
Unlock Bypass Program
Unlock Bypass Reset
Chip Erase
Sector Erase
Erase Suspend
Erase Resume
information.
the device is providing status data).
is also acceptable.
Erase Suspend command is valid only during a sector erase operation.
6
7
happens later.
Sector Protect Verify
Command Sequence
Manufacturer ID
Bottom Boot Block
Top Boot Block
10
Device ID,
Device ID,
14
13
12
11
9
1
Word
Word
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Austin Semiconductor, Inc.
1
1
4
4
4
4
1
4
3
2
2
6
6
1
1
Addr
XXX
AAA
AAA
AAA
AAA
AAA
AAA
XXX
XXX
AAA
AAA
XXX
XXX
555
555
555
555
AA
555
555
555
555
RA
55
First
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
A0
B0
F0
98
90
30
Addr
2AA
2AA
2AA
2AA
2AA
2AA
XXX
2AA
2AA
555
555
555
555
555
555
555
555
PA
Second
Data
PD
F0
55
55
55
55
55
55
55
55
21
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
555
Third
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
Bus Cycles
Data
BOO
BOO
BOOT SECT
90
90
90
90
A0
20
80
80
BOO
BOO
Addr
(SA)
(SA)
AAA
AAA
X00
X01
X02
X01
X02
X02
X04
555
555
PA
2-5
Fourth
T SECT
T SECT
T SECT
T SECTOR FLASH
22C4
XX00
XX01
Data
2249
PD
C4
AA
AA
01
49
00
01
Addr
2AA
2AA
555
555
Fifth
CO
CO
CO
COTS PEM
CO
OR FLASH
OR FLASH
OR FLASH
OR FLASH
AS29LV016
Data
55
55
TS PEM
TS PEM
TS PEM
TS PEM
Addr
AAA
555
SA
Sixth
Data
10
30