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M29F400BT Datasheet(PDF) 3 Page - STMicroelectronics

Part No. M29F400BT
Description  4 Mbit 512Kb x8 or 256Kb x16, Boot Block Single Supply Flash Memory
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M29F400BT Datasheet(HTML) 3 Page - STMicroelectronics

 
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M29F400BT, M29F400BB
The blocks in the memory are asymmetrically ar-
ranged, see Tables 3 and 4, Block Addresses. The
first or last 64 Kbytes have been divided into four
additional blocks. The 16 Kbyte Boot Block can be
used for small initialization code to start the micro-
processor, the two 8 Kbyte Parameter Blocks can
be used for parameter storage and the remaining
32K is a small Main Block where the application
may be stored.
Chip Enable, Output Enable and Write Enable sig-
nals control the bus operation of the memory.
They allow simple connection to most micropro-
cessors, often without additional logic.
The memory is offered in TSOP48 (12 x 20mm)
and SO44 packages and it is supplied with all the
bits erased (set to ’1’).
Table 2. Absolute Maximum Ratings (1)
Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may
cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions
above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-
tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qual-
ity documents.
2. Minimum Voltage may undershoot to –2V during transition and for less than 20ns during transitions.
Symbol
Parameter
Value
Unit
TA
Ambient Operating Temperature (Temperature Range Option 1)
0 to 70
°C
Ambient Operating Temperature (Temperature Range Option 6)
–40 to 85
°C
Ambient Operating Temperature (Temperature Range Option 3)
–40 to 125
°C
TBIAS
Temperature Under Bias
–50 to 125
°C
TSTG
Storage Temperature
–65 to 150
°C
VIO
(2)
Input or Output Voltage
–0.6 to 6
V
VCC
Supply Voltage
–0.6 to 6
V
VID
Identification Voltage
–0.6 to 13.5
V
Table 3. Top Boot Block Addresses,
M29F400BT
#
Size
(Kbyte
s)
Address Range
(x8)
Address Range
(x16)
10
16
7C000h-7FFFFh
3E000h-3FFFFh
9
8
7A000h-7BFFFh
3D000h-3DFFFh
8
8
78000h-79FFFh
3C000h-3CFFFh
7
32
70000h-77FFFh
38000h-3BFFFh
6
64
60000h-6FFFFh
30000h-37FFFh
5
64
50000h-5FFFFh
28000h-2FFFFh
4
64
40000h-4FFFFh
20000h-27FFFh
3
64
30000h-3FFFFh
18000h-1FFFFh
2
64
20000h-2FFFFh
10000h-17FFFh
1
64
10000h-1FFFFh
08000h-0FFFFh
0
64
00000h-0FFFFh
00000h-07FFFh
Table 4. Bottom Boot Block addresses,
M29F400BB
#
Size
(Kbyte
s)
Address Range
(x8)
Address Range
(x16)
10
64
70000h-7FFFFh
38000h-3FFFFh
9
64
60000h-6FFFFh
30000h-37FFFh
8
64
50000h-5FFFFh
28000h-2FFFFh
7
64
40000h-4FFFFh
20000h-27FFFh
6
64
30000h-3FFFFh
18000h-1FFFFh
5
64
20000h-2FFFFh
10000h-17FFFh
4
64
10000h-1FFFFh
08000h-0FFFFh
3
32
08000h-0FFFFh
04000h-07FFFh
2
8
06000h-07FFFh
03000h-03FFFh
1
8
04000h-05FFFh
02000h-02FFFh
0
16
00000h-03FFFh
00000h-01FFFh


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