AM29LV160 AMD [Advanced Micro Devices], AM29LV160 Datasheet - Page 24

• Manufacturer Part Number: AM29LV160
• Description: 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector 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. 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
4. Data bits DQ15–DQ8 are don’t cares for unlock and
5. Address bits A19–A11 are don’t cares for unlock and
6. No unlock or command cycles required when reading array
7. The Reset command is required to return to reading array
8. The fourth cycle of the autoselect command sequence is a
Read (Note 6)
Reset (Note 7)
CFI Query (Note 10)
Program
Unlock Bypass
Unlock Bypass Program (Note 11)
Unlock Bypass Reset (Note 12)
Chip Erase
Sector Erase
Erase Suspend (Note 13)
Erase Resume (Note 14)
autoselect command sequence, all bus cycles are write
cycles.
command cycles.
command cycles, unless SA or PA required.
data.
data when device is in the autoselect mode, or if DQ5 goes
high (while the device is providing status data).
read cycle.
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
Command
Sequence
(Note 1)
Word
Word
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Table 9. Am29LV160B Command Definitions
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
555
555
555
555
RA
AA
55
First
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
F0
A0
B0
98
90
30
Addr
2AA
2AA
2AA
2AA
2AA
2AA
XXX
2AA
2AA
Am29LV160B
555
555
555
555
555
555
555
555
PA
Second
Data
PD
55
55
55
55
55
55
00
55
55
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.
9. The data is 00h for an unprotected sector and 01h for a
10. Command is valid when device is ready to read array data or
11. The Unlock Bypass command is required prior to the Unlock
12. The Unlock Bypass Reset command is required to return to
13. The system may read and program in non-erasing sectors, or
14. The Erase Resume command is valid only during the Erase
protected sector. See “Autoselect Command Sequence” for
more information.
when device is in autoselect mode.
Bypass Program command.
reading array data when the device 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.
Suspend mode.
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
555
Bus Cycles (Notes 2–5)
Third
Data Addr
A0
90
90
90
90
20
80
80
(SA)
(SA)
AAA
AAA
X00
X01
X02
X01
X02
X02
X04
555
555
PA
Fourth
22C4
XX00
XX01
Data
2249
PD
C4
AA
AA
01
49
00
01
Addr Data Addr
2AA
2AA
555
555
Fifth
55
55
AAA
555
SA
Sixth
Data
10
30
23