M29F400BT, M29F400BB
(1)
Table 2. Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
°C
Ambient Operating Temperature (Temperature Range Option 1)
Ambient Operating Temperature (Temperature Range Option 6)
Ambient Operating Temperature (Temperature Range Option 3)
Temperature Under Bias
0 to 70
T
–40 to 85
–40 to 125
–50 to 125
–65 to 150
°C
A
°C
T
°C
BIAS
T
Storage Temperature
°C
STG
(2)
Input or Output Voltage
–0.6 to 6
V
V
IO
V
Supply Voltage
–0.6 to 6
V
V
CC
V
Identification Voltage
–0.6 to 13.5
ID
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.
Chip Enable, Output Enable and Write Enable sig-
The blocks in the memory are asymmetrically ar-
nals control the bus operation of the memory.
ranged, see Tables 3 and 4, Block Addresses. The
They allow simple connection to most micropro-
first or last 64 Kbytes have been divided into four
cessors, often without additional logic.
additional blocks. The 16 Kbyte Boot Block can be
The memory is offered in TSOP48 (12 x 20mm)
and SO44 packages and it is supplied with all the
bits erased (set to ’1’).
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.
Table 3. Top Boot Block Addresses,
M29F400BT
Table 4. Bottom Boot Block addresses,
M29F400BB
Size
(Kbyte
s)
Size
(Kbyte
s)
Address Range
(x8)
Address Range
(x16)
Address Range
(x8)
Address Range
(x16)
#
#
10
9
8
7
6
5
4
3
2
1
0
16
8
7C000h-7FFFFh
7A000h-7BFFFh
78000h-79FFFh
70000h-77FFFh
60000h-6FFFFh
50000h-5FFFFh
40000h-4FFFFh
30000h-3FFFFh
20000h-2FFFFh
10000h-1FFFFh
00000h-0FFFFh
3E000h-3FFFFh
3D000h-3DFFFh
3C000h-3CFFFh
38000h-3BFFFh
30000h-37FFFh
28000h-2FFFFh
20000h-27FFFh
18000h-1FFFFh
10000h-17FFFh
08000h-0FFFFh
00000h-07FFFh
10
9
8
7
6
5
4
3
2
1
0
64
64
64
64
64
64
64
32
8
70000h-7FFFFh
60000h-6FFFFh
50000h-5FFFFh
40000h-4FFFFh
30000h-3FFFFh
20000h-2FFFFh
10000h-1FFFFh
08000h-0FFFFh
06000h-07FFFh
04000h-05FFFh
00000h-03FFFh
38000h-3FFFFh
30000h-37FFFh
28000h-2FFFFh
20000h-27FFFh
18000h-1FFFFh
10000h-17FFFh
08000h-0FFFFh
04000h-07FFFh
03000h-03FFFh
02000h-02FFFh
00000h-01FFFh
8
32
64
64
64
64
64
64
64
8
16
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STMICROELECTRONICS [ ST ]
