AM29LV800D AMD [Advanced Micro Devices], AM29LV800D Datasheet - Page 23

• Manufacturer Part Number: AM29LV800D
• Description: 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

Notes:
1. See Table 5 for erase command sequence.
2. See “DQ3: Sector Erase Timer” for more information.
January 21, 2005 Am29LV800D_00_A4_E
Read (Note 6)
Reset (Note 7)
Program
Unlock Bypass
Unlock Bypass Program (Note
10)
Unlock Bypass Reset (Note
11)
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
No
Figure 1. Erase Operation
Command
Sequence
(Note 1)
Command Sequence
Erasure Completed
Write Erase
from System
Data = FFh?
Data Poll
START
Yes
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Table 5. Am29LV800D Command Definitions
1
1
4
4
4
4
4
3
2
2
Embedded
Erase
algorithm
in progress
Addr
AAA
XXX
XXX
XXX
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
RA
First
P R E L I M I N A R Y
Data
RD
AA
AA
AA
AA
AA
AA
F0
A0
90
Addr
Am29LV800D
2AA
2AA
2AA
2AA
2AA
2AA
XXX
555
555
555
555
555
555
PA
Second
Data
PD
55
55
55
55
55
55
00
Addr
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
Bus Cycles (Notes 2-5)
Third
Data Addr
A0
90
90
90
90
20
(SA)
(SA)
X00
X01
X02
X01
X02
X02
X04
PA
Fourth
22DA
225B
XX00
XX01
Data
DA
5B
PD
01
00
01
Addr Data
Fifth
Addr
Sixth
Data
21