MBM29LV008TA Datasheet, PDF (10/51 Pages) SPANSION – FLASH MEMORY CMOS 8M (1M X 8) BIT

MBM29LV008TA-70/-90/-12/MBM29LV008BA-70/-90/-12
The manufacturer and device codes may also be read via the command register, for instances when the
MBM29LV008TA/BA are erased or programmed in a system without access to high voltage on the A9 pin. The
command sequence is illustrated in Table 6. (Refer to Autoselect Command section.)
Byte 0 (A0 = VIL) represents the manufacturer’s code (Fujitsu = 04H) and (A0 = VIH) represents the device identifier
code (MBM29LV008TA = 3EH and MBM29LV008BA = 37H). These two bytes/words are given in the tables 3.1
and 3.2. All identifiers for manufactures and device will exhibit odd parity with DQ7 defined as the parity bit. In
order to read the proper device codes when executing the autoselect, A1 must be VIL. (See Tables 3.1 and 3.2.)
Table 3 .1 MBM29LV008TA/008BA Sector Protection Verify Autoselect Codes
Type
A13 to A19
A10
A6
A1
A0
Code (HEX)
Manufacture’s Code
X
VIL
VIL
VIL
VIL
04H
MBM29LV008TA
X
Device Code
MBM29LV008BA
X
VIL
VIL
VIL
VIH
VIL
VIL
VIL
VIH
3EH
37H
Sector Protection
Sector
Addresses
VIL
VIL
VIH
VIL
01H*
* : Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
Table 3 .2 Expanded Autoselect Code Table
Type
Code
DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0
Manufacture’s Code
04H
0
0
0
0
0
1
0
0
MBM29LV008TA
3EH
0
0
1
1
1
1
1
0
Device Code
MBM29LV008BA 37H
0
0
1
1
0
1
1
1
Sector Protection
01H
0
0
0
0
0
0
0
1
10