P R E L I M I N A R Y
Table 14. Am29DL162C/Am29DL163C Command Definitions
Bus Cycles (Notes 2–5)
Command
Sequence
(Note 1)
First
Second
Third
Addr
Fourth
Fifth
Sixth
Addr Data Addr Data
Data
Addr
Data
Addr Data Addr Data
Read (Note 6)
Reset (Note 7)
1
1
RA
XXX
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
XXX
BA
RD
F0
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
2AA
555
PA
(BA)555
(BA)AAA
(BA)555
(BA)AAA
(BA)555
(BA)AAA
(BA)555
(BA)AAA
555
Manufacturer ID
4
4
4
4
3
4
4
3
AA
AA
AA
AA
AA
AA
AA
AA
55
55
55
55
55
55
55
55
90 (BA)X00
01
(BA)X01
90
(see
Table 7)
Device ID
(BA)X02
(BA)X03
90
SecSi Sector Factory
Protect (Note 9)
80/00
00/01
(BA)X06
(SA)X02
90
Sector Protect Verify
(Note 10)
(SA)X04
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
88
AAA
555
90
A0
20
XXX
PA
00
AAA
555
PD
AAA
555
Unlock Bypass
AAA
Unlock Bypass Program (Note 11)
Unlock Bypass Reset (Note 12)
2
2
A0
90
PD
00
XXX
2AA
555
2AA
555
Word
555
AAA
555
AAA
BA
555
AAA
555
555
AAA
555
2AA
555
2AA
555
555
Chip Erase
Byte
6
6
AA
AA
55
55
80
80
AA
AA
55
55
10
30
AAA
Word
Sector Erase
Byte
SA
AAA
AAA
Erase Suspend (Note 13)
Erase Resume (Note 14)
1
1
B0
30
BA
Word
CFI Query (Note 15)
Byte
55
1
98
AA
Legend:
X = Don’t care
PD = Data to be programmed at location PA. Data latches on the rising
edge of WE# or CE# pulse, whichever happens first.
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A19–A12 uniquely select any sector.
BA = Address of the bank that is being switched to autoselect mode, is
in bypass mode, or is being erased.
PA = Address of the memory location to be programmed. Addresses
latch on the falling edge of the WE# or CE# pulse, whichever happens
later.
Notes:
1. See Table 1 for description of bus operations.
9. The data is 80h for factory locked and 00h for not factory locked.
2. All values are in hexadecimal.
10. The data is 00h for an unprotected sector/sector block and 01h for
a protected sector/sector block.
3. Except for the read cycle and the fourth cycle of the autoselect
command sequence, all bus cycles are write cycles.
11. The Unlock Bypass command is required prior to the Unlock
Bypass Program command.
4. Data bits DQ15–DQ8 are don’t care in command sequences,
except for RD and PD.
12. The Unlock Bypass Reset command is required to return to
reading array data when the bank is in the unlock bypass mode.
5. Unless otherwise noted, address bits A19–A11 are don’t cares.
13. 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, and requires the bank address.
6. No unlock or command cycles required when bank is in read
mode.
7. The Reset command is required to return to reading 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).
14. The Erase Resume command is valid only during the Erase
Suspend mode, and requires the bank address.
15. Command is valid when device is ready to read array data or when
device is in autoselect mode.
8. The fourth cycle of the autoselect command sequence is a read
cycle. The system must provide the bank address to obtain the
manufacturer ID, device ID, or SecSi Sector factory protect
information. Data bits DQ15–DQ8 are don’t care. See the
Autoselect Command Sequence section for more information.
25
Am29DL162C/Am29DL163C
SPANSION [ SPANSION ]
