AM29BDS320G SPANSION [SPANSION], AM29BDS320G Datasheet - Page 38

• Manufacturer Part Number: AM29BDS320G
• Description: 32 Megabit (2 M x 16-Bit), 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
• Manufacturer: SPANSION [SPANSION]

Command Definitions
36
Asynchronous Read (6)
Reset (7)
Program
Unlock Bypass
Unlock Bypass Program (12)
Unlock Bypass Sector Erase (12)
Unlock Bypass Chip Erase (12)
Unlock Bypass Reset (13)
Chip Erase
Sector Erase
Erase Suspend (7, 14)
Erase Resume (15)
Sector Lock/Unlock (7)
Set Burst Mode
Configuration Register (16)
CFI Query (17)
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 rising edge of the AVD# pulse.
PD = Data to be programmed at location PA. Data latches on the
rising edge of WE# pulse.
Notes:
1. See Table
2. All values are in hexadecimal.
3. Except for the read cycle and the fourth cycle of the autoselect
4. Data bits DQ15–DQ8 are don’t care in command sequences,
5. Unless otherwise noted, address bits A20–A12 are don’t cares.
6. No unlock or command cycles required when bank is reading
7. The Reset command is required to return to reading array data
8. The fourth cycle of the autoselect command sequence is a read
9. The data in the fifth cycle is 2222 for 1.8 V V
command sequence, all bus cycles are write cycles.
except for RD and PD.
array data.
(or to the erase-suspend-read mode if previously in Erase
Suspend) when a bank is in the autoselect mode, or if DQ5 goes
high (while the bank is providing status information) or
performing sector lock/unlock.
cycle. The system must provide the bank address. See the
Autoselect Command Sequence section for more information.
V V
(bottom boot).
Manufacturer ID
Device ID (9)
Sector Lock Verify (10)
Handshaking Option (11)
Command Sequence
IO
(top boot); 2223 for 1.8 V V
(Notes)
1
for description of bus operations.
1
1
4
6
4
4
4
3
2
2
2
2
6
6
1
1
3
3
1
IO
, and 2234 for 3.0 V V
Addr Data Addr Data
XXX
XXX
XXX
XXX
555
555
555
555
555
555
555
555
555
RA
BA
BA
BA
BA
55
First
IO
Table 14. Command Definitions
, and 2214 for 3.0
RD
AA
AA
AA
AA
AA
AA
A0
80
80
90
AA
AA
B0
30
60
AA
98
F0
2AA
2AA
2AA
2AA
2AA
2AA
XXX
XXX
2AA
2AA
2AA
BA
PA
SA
Second
Am29BDS320G
IO
PD
55
55
55
55
55
55
30
10
00
55
55
60
55
P r e l i m i n a r y
(CR)555
(BA)555
(BA)555
(SA)555
(BA)555
Addr
555
555
555
555
SLA
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A20–A13 uniquely select any sector.
BA = Address of the bank (A20, A19) that is being switched to
Autoselect mode, is in bypass mode, is being erased, or is being
selected for sector lock/unlock.
SLA = Address of the sector to be locked. Set sector address (SA)
and either A6 = 1 for unlocked or A6 = 0 for locked.
CR = Configuration Register address bits A19–A12.
10. The data is 0000h for an unlocked sector and 0001h for a locked
11. The data is 0043h for reduced wait-state handshaking and
12. The Unlock Bypass command sequence is required prior to this
13. The Unlock Bypass Reset command is required to return to
14. The system may read and program in non-erasing sectors, or
15. The Erase Resume command is valid only during the Erase
16. See “Set Burst Mode Configuration Register Command
17. Command is valid when device is ready to read array data or
Third
sector
0042h for standard handshaking.
command sequence.
reading array data when the bank is in the unlock bypass mode.
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector erase
operation, and requires the bank address.
Suspend mode, and requires the bank address.
Sequence” for details.
when device is in autoselect mode.
Bus Cycles (Notes 1–5)
Data
90
90
90
90
A0
20
80
80
60
C0
(BA)X00
(BA)X01
(SA)X02
(BA)X03
Addr
555
555
PA
Fourth
0000/0001
0042/0043
Data
0001
227E
PD
AA
AA
(BA)X
Addr
2AA
2AA
0E
Fifth
(Note
Data
55
55
9)
27243B1 October 1, 2003
Addr
(BA)
X0F
555
SA
Sixth
Data
2200
10
30