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M29DW128F Datasheet(PDF) 20 Page - STMicroelectronics

Part # M29DW128F
Description  128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V supply Flash memory
PDF  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29DW128F Datasheet(HTML) 20 Page - STMicroelectronics

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Bus operations
M29DW128F
20/94
3.6.5
Temporary Unprotect of high voltage Protected Blocks
The RP pin can be used to temporarily unprotect all the blocks previously protected using the In-System
or the Programmer protection technique (High Voltage techniques). Refer to Section 2.9: Reset/Block
Temporary Unprotect (RP).
Table 3.
Bus operations, 8-bit mode(1)
Operation
E
G
W
RP
VPP/WP
Address Inputs
Data Inputs/Outputs
A22-A0, DQ15A-1
DQ14-DQ8
DQ7-DQ0
Bus Read
VIL
VIL
VIH VIH
VIH
Cell Address
Hi-Z
Data Output
Bus Write
VIL
VIH
VIL
VIH
VIH
Command Address
Hi-Z
Data Input
Output Disable
X
VIH
VIH VIH
VIH
X
Hi-Z
Hi-Z
Standby
VIH
XX
VIH
VIH
X
Hi-Z
Hi-Z
1.
X = VIL or VIH.
Table 4.
Read Electronic Signature, 8-bit mode(1)
Read Cycle
E
G
W
Address Inputs
Data
Inputs/Outputs
A22-A10
A9
A8
A7-A6 A5-A4
A3
A2
A1
A0
DQ15A-1
DQ14-
DQ8
DQ7-
DQ0
Manufacturer Code
VIL VIL VIH
XVID
XVIL
XVIL
VIL
VIL
VIL
X
Hi-Z
20h
Device Code (Cycle 1)
VIL
VIL
VIL
VIL
VIH
XHi-Z
7Eh
Device Code (Cycle 2)
VIH VIH VIH
VIL
X
Hi-Z
20h
Device Code (Cycle 3)
VIH VIH VIH VIH
X
Hi-Z
00h
1.
X = VIL or VIH.
Table 5.
Block Protection, 8-bit mode(1)
Operation
E
G
W
RP
VPP/
WP
Address Inputs
Data Inputs/Outputs
A22
-
A12
A11-
A10
A9 A8 A7 A6
A5
-
A4
A3-
A2
A1
A0
DQ15
A-1
DQ14
-DQ8
DQ7-DQ0
Verify Extended
Block
Protection
Indicator (bits
DQ6, DQ7)
VIL VIL VIH VIH VIH
BA
XVID X
X
VIL
X
VIL VIH
VIH
X
Hi-Z
80h (Customer
Lockable)
C0h (Customer
Locked)(2)
Verify Block
Protection
Status
BKA
VIL
VIL
VIL
X
01h (protected)
00h
(unprotected)
Temporary
Block
Unprotect (3)
XX
X
VID
X
Valid
Data Input
1.
X = VIL or VIH. BKA Bank Address, BA any Address in the Block.
2.
This indicates the protection status of the second section of the Extended Block; the first section of the Extended Block
being always Factory Locked.
3.
The RP pin unprotects all the blocks that have been previously protected using a High Voltage protection Technique.



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