MBM29F800BA Fujitsu Media Devices, MBM29F800BA Datasheet - Page 11

• Manufacturer Part Number: MBM29F800BA
• Description: 8M (1M X 8/512K X 16) BIT
• Manufacturer: Fujitsu Media Devices

*1: A
*2: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
(B): Byte mode
(W): Word mode
Write
Sector Protection
Manufacture’s Code
Device
Code
Sector Protection
Manufacture’s Code
Device Code
Sector Protection
Device erasure and programming are accomplished via the command register. The contents of the register serve
as inputs to the internal state machine. The state machine outputs dictate the function of the device.
The command register itself does not occupy any addressable memory location. The register is a latch used to
store the commands, along with the address and data information needed to execute the command. The
command register is written by bringing WE to V
the falling edge of WE or CE, whichever happens later; while data is latched on the rising edge of WE or CE,
whichever happens first. Standard microprocessor write timings are used.
Refer to AC Write Characteristics and the Erase/Programming Waveforms for specific timing parameters.
The MBM29F800TA/BA features hardware sector protection. This feature will disable both program and erase
operations in any number of sectors (0 through 18). The sector protection feature is enabled using programming
equipment at the user’s site. The device is shipped with all sectors unprotected.
-1
is for Byte mode.
MBM29F800TA
MBM29F800BA
Type
MBM29F800TA
MBM29F800TA
MBM29F800BA
Table 4 .1 MBM29F800TA/BA Sector Protection Verify Autoselect Codes
Type
(B)
(W)
(B)
(W)
Code
2258H
22D6H
D6H A
04H A
58H A
01H A
Table 4 .2 Expanded Autoselect Code Table
Word
Word
Byte
Byte
DQ
-1
-1
0
0
-1
-1
/0 0
/0 0
15
Addresses
DQ
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z 1
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z 0
A
0
0
Sector
12
14
to A
X
X
X
DQ
0
1
1
0
-55/-70/-90
13
18
IL
, while CE is at V
DQ
0
0
0
0
12
DQ
V
V
V
V
A
0
0
0
0
IL
IL
IL
IL
6
11
DQ
/MBM29F800BA
0
0
0
0
10
DQ
IL
0
1
1
0
V
V
V
V
A
and OE is at V
9
IL
IL
IL
IH
1
DQ
0
0
0
0
8
DQ
0
1
0
0
7
V
V
V
V
A
DQ
IH
IH
IL
IL
0
0
1
1
1
1
0
IH
6
. Addresses are latched on
DQ
0
0
0
0
0
0
5
DQ
0
1
1
1
1
0
A
V
V
V
V
4
X
X
-1
IL
IL
IL
IL
DQ
*
1
0
0
0
1
1
0
3
-55/-70/-90
DQ
1
1
1
0
0
0
2
22D6H
2258H
(HEX)
Code
01H*
DQ
D6H
04H
58H
0
1
1
0
0
0
1
DQ
2
0
0
0
0
0
1
0
11