AM29DL640D120 AMD [Advanced Micro Devices], AM29DL640D120 Datasheet - Page 28

• Manufacturer Part Number: AM29DL640D120
• Description: 64 Megabit CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

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.
Notes:
1.
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 A21–A11 (x16-only devices)
6. No unlock or command cycles required when bank is reading
7. The Reset command is required to return to the read mode (or to
8. The fourth cycle of the autoselect command sequence is a read
October 7, 2004
Read (Note 6)
Reset (Note 7)
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
Unlock Bypass
Unlock Bypass Program (Note 12)
Unlock Bypass Reset (Note 13)
Chip Erase
Sector Erase
Erase Suspend (Note 14)
Erase Resume (Note 15)
CFI Query (Note 16)
See Table 1 for description of bus operations.
command sequence, all bus cycles are write cycles.
except for RD and PD.
or address bits A22–A11 (x8-only devices) are don’t cares for
unlock and command cycles, unless SA or PA is required.
array data.
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).
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.
Manufacturer ID
Device ID (Note 9)
SecSi Sector Factory
Protect (Note 10)
Sector/Sector Block
Protect Verify
(Note 11)
Command
Sequence
(Note 1)
Word
Word
Word
Word
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
1
1
4
6
4
4
3
4
4
3
2
2
6
6
1
1
1
Table 12. Am29DL640D Command Definitions
Addr
XXX
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
XXX
AAA
AAA
555
555
555
555
555
555
555
555
555
555
RA
BA
BA
BA
AA
55
First
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
F0
A0
B0
90
30
98
Addr
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
XXX
2AA
2AA
555
555
555
555
555
555
555
555
555
555
PA
Second
Am29DL640D
Data
PD
55
55
55
55
55
55
55
55
00
55
55
(BA)AAA
(BA)AAA
(BA)AAA
(BA)AAA
(BA)555
(BA)555
(BA)555
(BA)555
Addr
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
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 A21–A15 uniquely select any sector in a x16-only
device. Address bits A22–A16 uniquely select any sector in a x8-only
device. Refer to Table 2 for information on sector addresses.
BA = Address of the bank that is being switched to autoselect mode, is
in bypass mode, or is being erased.
9. The device ID must be read across the fourth, fifth, and sixth
10. The data is 80h for factory locked and 00h for not factory locked.
11. The data is 00h for an unprotected sector/sector block and 01h for
12. The Unlock Bypass command is required prior to the Unlock
13. The Unlock Bypass Reset command is required to return to the
14. The system may read and program in non-erasing sectors, or
15. The Erase Resume command is valid only during the Erase
16. Command is valid when device is ready to read array data or when
Third
cycles.
a protected sector/sector block.
Bypass Program command.
read mode 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.
device is in autoselect mode.
Bus Cycles (Notes 2–5)
Data
A0
90
90
90
90
88
90
20
80
80
(BA)X00
(BA)X01
(BA)X02
(BA)X03
(BA)X06
(SA)X02
(SA)X04
Addr
XXX
AAA
AAA
555
555
PA
Fourth
80/00
00/01
Data
PD
7E
AA
AA
01
00
(BA)X0E
(BA)X1C
Addr
2AA
2AA
555
555
Fifth
Data
02
55
55
(BA)X1E
(BA)X0F
Addr
AAA
555
SA
Sixth
Data
01
10
30
27