M29W400BT STMICROELECTRONICS [STMicroelectronics], M29W400BT Datasheet - Page 3

• Manufacturer Part Number: M29W400BT
• Description: 4 Mbit 512Kb x8 or 256Kb x16, Boot Block Low Voltage Single Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 2. Absolute Maximum Ratings
Note: 1. Except for the rating ”Operating Temperature Range”, stresses above those listed in the Table ”Absolute Maximum Ratings” may
Table 3. Top Boot Block Addresses
M29W400BT
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.
10
#
9
8
7
6
5
4
3
2
1
0
Symbol
(Kbytes)
2. Minimum Voltage may undershoot to –2V during transition and for less than 20ns during transitions.
V
T
T
V
V
IO
BIAS
Size
T
STG
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.
CC
16
32
64
64
64
64
64
64
64
A
ID
8
8
(2)
Address Range
7C000h-7FFFFh
7A000h-7BFFFh
78000h-79FFFh
70000h-77FFFh
60000h-6FFFFh
50000h-5FFFFh
40000h-4FFFFh
30000h-3FFFFh
20000h-2FFFFh
10000h-1FFFFh
00000h-0FFFFh
Ambient Operating Temperature (Temperature Range Option 1)
Ambient Operating Temperature (Temperature Range Option 6)
Temperature Under Bias
Storage Temperature
Input or Output Voltage
Supply Voltage
Identification Voltage
(x8)
3D000h-3DFFFh
3C000h-3CFFFh
Address Range
3E000h-3FFFFh
38000h-3BFFFh
30000h-37FFFh
28000h-2FFFFh
20000h-27FFFh
18000h-1FFFFh
10000h-17FFFh
08000h-0FFFFh
00000h-07FFFh
(x16)
(1)
Parameter
Table 4. Bottom Boot Block Addresses
M29W400BB
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’).
10
#
9
8
7
6
5
4
3
2
1
0
(Kbytes)
Size
64
64
64
64
64
64
64
32
16
8
8
Address Range
70000h-7FFFFh
60000h-6FFFFh
50000h-5FFFFh
40000h-4FFFFh
30000h-3FFFFh
20000h-2FFFFh
10000h-1FFFFh
08000h-0FFFFh
06000h-07FFFh
04000h-05FFFh
00000h-03FFFh
M29W400BT, M29W400BB
(x8)
–0.6 to 13.5
–50 to 125
–65 to 150
–40 to 85
–0.6 to 4
–0.6 to 4
0 to 70
Value
Address Range
38000h-3FFFF h
30000h-37FFFh
28000h-2FFFF h
20000h-27FFFh
18000h-1FFFF h
10000h-17FFFh
08000h-0FFFF h
04000h-07FFFh
03000h-03FFFh
02000h-02FFFh
00000h-01FFFh
(x16)
Unit
V
V
V
C
C
C
C
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