S29AL004D SPANSION, S29AL004D Datasheet - Page 26

• Manufacturer Part Number: S29AL004D
• Description: 4 Megabit (512 Kx 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: SPANSION

Notes:
1. See
2. See
24
Read (Note 6)
Reset (Note 7)
Program
Unlock Bypass
Unlock Bypass Program (Note 10)
Unlock Bypass Reset (Note 11)
Chip Erase
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
Table 12 on page 41
DQ3: Sector Erase Timer‚ on page 29
Command
Sequence
(Note 1)
Word
Word
Word
Word
Word
Word
Word
Table 5. S29AL004D Command Definitions (Sheet 1 of 2)
Byte
Byte
Byte
Byte
Byte
Byte
Byte
for erase command sequence.
3
2
2
1
1
4
4
4
4
4
6
Addr
XXX
AAA
AAA
AAA
AAA
AAA
AAA
XXX
XXX
AAA
555
555
555
555
555
555
555
RA
No
First
Command Sequence
Figure 4. Erase Operation
Data
Erasure Completed
RD
F0
AA
AA
AA
AA
AA
AA
A0
90
AA
A d v a n c e
for more information.
Write Erase
from System
Data = FFh?
Data Poll
START
Addr
2AA
2AA
2AA
2AA
2AA
2AA
XXX
2AA
555
555
555
555
555
555
555
PA
Second
S29AL004D
Yes
(F0h)
Data
PD
55
55
55
55
55
55
00
55
I n f o r m a t i o n
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
Bus Cycles (Notes 2-5)
Embedded
Erase
algorithm
in progress
Third
Data
90
90
90
90
A0
20
80
Addr
(SA)
(SA)
AAA
X00
X01
X02
X01
X02
X02
X04
555
PA
Fourth
Data
22B9
22BA
XX00
XX01
B9
BA
PD
AA
01
00
01
S29AL004D_00_A1 February 18, 2005
Addr
2AA
555
Fifth
Data
55
Addr
AAA
555
Sixth
Data
10