ꢀꢕꢆꢖꢗꢘꢈꢙꢇ
&
ꢀꢁꢑꢑꢌꢍꢒꢉ#ꢁꢄꢑꢌꢈ(ꢉꢛꢜ)%ꢅꢈꢉꢑꢁꢒꢏ
1
Bus Write Operations
2nd bus cycle 3rd bus cycle 4th bus cycle 5th bus cycle 6th bus cycle
1st bus cycle
Command Length
Address Data Address Data Address Data Address Data Address Data Address Data
1
3
3
4
X
F0
Read/ Reset
555
555
555
AA
AA
AA
2AA
2AA
2AA
55
55
55
X
FO
90
A0
2
2
Auto Select
Program
555
555
*
*
PA
PD
Unlock
Bypass
3
555
AA
2AA
55
555
20
Unlock
Bypass
2
X
A0
PA
PD
Program
Unlock
Bypass
Reset
2
X
90
X
OO
Chip Erase
Block Erase
6
6
555
555
AA
AA
2AA
2AA
55
55
555
555
80
80
555
555
AA
AA
2AA
2AA
55
55
555
BA
10
30
Erase
Suspend
1
X
B0
Erase
Resume
1
1
X
X
30
98
CFI Query
ꢛꢉKey: L =Low (<V ); H = High (>V ); X =Don’t care
IL
IH
ꢗꢉ ꢁꢓꢄꢈꢇꢉ%ꢓꢕꢉꢎꢃꢎꢋꢏꢉꢅꢍꢉꢈꢇꢏꢉꢌꢓꢈꢁꢕꢏꢋꢏꢎꢈꢉꢑꢁꢒꢏꢉꢅꢕꢉꢌꢉꢄꢏꢌꢒꢉꢎꢃꢎꢋꢏꢉ,ꢅꢈꢇꢉꢈꢇꢏꢉ#ꢁꢋꢋꢁ,ꢅꢍꢆꢉꢏ$ꢂꢏꢎꢈꢏꢒꢉꢒꢌꢈꢌꢉ-ꢕꢏꢏꢉꢍꢏ$ꢈꢉꢈꢌ%ꢋꢏ.ꢔꢉ/ꢇꢏꢄꢏꢉꢎꢌꢍꢉ%ꢏꢉꢕꢓꢎꢎꢏꢕꢕꢅꢖꢏꢉꢄꢏꢌꢒꢉꢎꢃꢎꢋꢏꢕꢉ,ꢅꢈꢇꢉꢌꢒꢒꢄꢏꢕꢕꢉ0ꢝꢝ(ꢉ
0ꢝꢛ(ꢉ0ꢝꢗꢉꢅꢍꢉꢌꢍꢃꢉꢁꢄꢒꢏꢄꢔꢉꢉ
*+ꢊꢞꢉꢎꢁꢒꢏꢕ
Mode
A19–A12
A6
L
A1
L
A0 Code
1
MFR code (Alliance Semiconductor)
X
L
H
H
H
H
52h
×8 T boot
×8 B boot
×16 T boot
×16 B boot
X
X
X
X
L
L
CAh
L
L
49h
Device code
L
L
22C4h
2249h
L
L
01h protected
00h unprotected
Sector protection
Sector address
L
H
L
ꢛꢉKey: L =Low (<V ); H = High (>V ); X =Don’t care
IL
IH
8/ 30/ 01; V.0.9.5
ꢀ%%ꢔꢋꢌꢍꢎꢅꢕꢎꢓꢔꢍꢑꢌꢉꢁꢍꢄꢑꢒ
P. 7 of 29
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
