L29S800F
PRELIMINARY
A
8MEGABIT (1M×8 /512K×16)
3 VOLT CMOS FLASH MEMERY
LinkSmart
10
071802
to V
IH
. All addresses are DON’T CARES except A
0
, A
1
, A
6
, and A
-
1
. (See Table 4.1.)
The manufacturer and device codes may also be read via the command register, for instances when
theL29S800F/-B are erased or programmed in a system without access to high voltage on the A
9
pin.
The command sequence is illustrated in Table 7. (Refer to Autoselect Command section.)
Byte 0 (A
0
= V
IL
) represents the manufacturer’s code (LST = 04H) and (A
0
= V
IH
) represents the
device identifier code (L29S800F = DAH and 29S800F-B = 5BH for x8 mode; L29S800F = 22DAH and
29S800F-B = 225BH for x16 mode). These two bytes/words are given in the tables 4.1 and 4.2. All
identifiers for manufactures and device will exhibit odd parity with DQ
7
defined as the parity bit. In
order to read the proper device codes when executing the autoselect, A
1
must be V
IL
. (See Tables 4.1
and 4.2.)
Table 4 .1 L29S800F/-B Sector Protection Verify Autoselect Codes
Type
A
12
to A
18
A
6
A
1
A
0
A
-1*1
Code (HEX)
Manufacture’s Code
X
V
IL
V
IL
V
IL
V
IL
04H
Byte
V
IL
DAH
L29S800F
Word
X
V
IL
V
IL
V
IH
X
22DAH
Byte
V
IL
5BH
Device Code
29S800F-B
Word
X
V
IL
V
IL
V
IH
X
5BH
Sector Protection
Sector
Addresses
V
IL
V
IH
V
IL
V
IL
01H
*2
*1: A
-1
is for Byte mode.
*2: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
Table 4 .2 Expanded Autoselect Code Table
Type
Code
DQ
15
DQ
14
DQ
13
DQ
12
DQ
11
DQ
10
DQ
9
DQ
8
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
DQ
2
DQ
1
DQ
0
Manufacture’s Code
04H A
-1
/0 0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
(B) DAH A
-1
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z
1
1
0
1
1
0
1
0
L29S800F
(W)
22DAH
0
0
1
0
0
0
1
0
1
1
0
1
1
0
1
0
(B) 5BH
A
-1
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z
0
1
0
1
1
0
1
1
Device
Code
29S800F-B
(W)
225BH
0
0
1
0
0
0
1
0
0
1
0
1
1
0
1
1
Sector Protection
01H A
-1
/0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
(B): Byte mode
(W): Word mode