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M29W400B-120N5R Datasheet(PDF) 8 Page - STMicroelectronics

Part # M29W400B-120N5R
Description  4 Mbit 512Kb x8 or 256Kb x16, Boot Block Low Voltage Single Supply Flash Memory
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W400B-120N5R Datasheet(HTML) 8 Page - STMicroelectronics

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Org.
Code
Device
E
G
W
BYTE
A0
A1
Other
Addresses
DQ15
A–1
DQ8-
DQ14
DQ0-
DQ7
Word-
wide
Manufact.
Code
VIL
VIL
VIH
VIH
VIL
VIL
Don’t Care
0
00h
20h
Device
Code
M29W400T
VIL
VIL
VIH
VIH
VIH
VIL
Don’t Care
0
00h
EEh
M29W400B
VIL
VIL
VIH
VIH
VIH
VIL
Don’t Care
0
00h
EFh
Byte-
wide
Manufact.
Code
VIL
VIL
VIH
VIL
VIL
VIL
Don’t Care
Don’t
Care
Hi-Z
20h
Device
Code
M29W400T
VIL
VIL
VIH
VIL
VIH
VIL
Don’t Care
Don’t
Care
Hi-Z
EEh
M29W400B
VIL
VIL
VIH
VIL
VIH
VIL
Don’t Care
Don’t
Care
Hi-Z
EFh
Table 5. Read Electronic Signature (following AS instruction or with A9 = VID)
Code
E
G
W
A0
A1
A12-A17
Other
Addresses
DQ0-DQ7
Protected Block
VIL
VIL
VIH
VIL
VIH
Block Address
Don’t Care
01h
Unprotected Block
VIL
VIL
VIH
VIL
VIH
Block Address
Don’t Care
00h
Table 6. Read Block Protection with AS Instruction
Operation
E
G
W
RP
BYTE
A0
A1
A6
A9
A12
A15
DQ15
A–1
DQ8-
DQ14
DQ0-DQ7
Read Word
VIL
VIL
VIH
VIH
VIH
A0
A1
A6
A9
A12
A15
Data
Output
Data
Output
Data
Output
Read Byte
VIL
VIL
VIH
VIH
VIL
A0
A1
A6
A9
A12
A15
Address
Input
Hi-Z
Data
Output
Write Word
VIL
VIH
VIL
VIH
VIH
A0
A1
A6
A9
A12
A15
Data Input Data Input
Data
Input
Write Byte
VIL
VIH
VIL
VIH
VIL
A0
A1
A6
A9
A12
A15
Address
Input
Hi-Z
Data
Input
Output Disable
VIL
VIH
VIH
VIH
X
X
X
X
X
X
X
Hi-Z
Hi-Z
Hi-Z
Standby
VIH
XX
VIH
X
X
X
X
X
X
X
Hi-Z
Hi-Z
Hi-Z
Reset
X
X
X
VIL
X
X
X
X
X
X
X
Hi-Z
Hi-Z
Hi-Z
Block
Protection
(2,4)
VIL
VID
VIL Pulse
VIH
XX
X
X
VID
XX
X
X
X
Blocks
Unprotection
(4)
VID
VID
VIL Pulse
VIH
XX
X
X
VID
VIH
VIH
XX
X
Block
Protection
Verify
(2 ,4)
VIL
VIL
VIH
VIH
XVIL
VIH
VIL
VID
A12
A15
X
X
Block
Protect
Status
(3)
Block
Unprotection
Verify
(2 ,4)
VIL
VIL
VIH
VIH
XVIL
VIH
VIH
VID
A12
A15
X
X
Block
Protect
Status
(3)
Block
Temporary
Unprotection
XX
X
VID
X
X
XX
XX
X
X
X
X
Notes: 1. X = VIL or VIH
2. Block Address must be given on A12-A17 bits.
3. See Table 6.
4. Operation performed on programming equipment.
Table 4. User Bus Operations (1)
8/34
M29W400T, M29W400B


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