M29DW641F70N1 NUMONYX [Numonyx B.V], M29DW641F70N1 Datasheet - Page 23
M29DW641F70N1
Manufacturer Part Number
M29DW641F70N1
Description
64 Mbit (4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
Manufacturer
NUMONYX [Numonyx B.V]
Datasheet
1.M29DW641F70N1.pdf
(80 pages)
- Current page: 23 of 80
- Download datasheet (2Mb)
M29DW641F
5.2.2
The Non-Volatile Protection is more advanced in the Password Protection mode.
In this mode, the Lock-Down bit is non-volatile and cannot be cleared through a hardware reset or a
power-down/power-up sequence.
The Lock-Down bit is cleared by issuing the Password Protection Unlock command along with the correct
password.
Once the correct Password has been provided, the Lock-Down bit is cleared and the Non-Volatile Modify
Protection bits can be set or reset using the appropriate commands (the Set Non-Volatile Modify
Protection bit command or the Clear Non-Volatile Modify Protection bits command, respectively).
If the Password provided is not correct, the Lock-Down bit remains locked and the state of the Non-
Volatile Modify Protection bits cannot be modified.
The Password is a 64-bit code located in the memory space. It must be programmed by the user prior to
selecting the Password Protection mode. The Password is programmed by issuing a Password Program
command and checked by issuing a Password Verify command. The Password should be unique for each
part.
Once the device is in Password Protection mode, the Password can no longer be read or retrieved.
Moreover, all commands to the address where the password is stored, are disabled. Refer to
Figure 6: Software Protection scheme
Table 7.
1. The Lock bit can always be modified by issuing a Clear Lock bit command or by taking the device through a Power-up or
Lock bit
Volatile
Hardware Reset.
0
0
0
1
1
0
1
1
Modify Protection
Non-volatile Protection
Block Protection status
Non-volatile
bit
0
0
1
0
1
1
0
1
Lock-Down
bit
0
1
0
0
0
1
1
1
for details on the block protection scheme.
Protection
status
Block
0000h
0001h
Program/Erase
Unprotected
Protected
Block
Block
Block Protection status
Non-volatile Modify Protection bit
can be modified
Non-volatile Modify Protection bit
cannot be modified
Non-volatile Modify Protection bit
can be modified
Non-volatile Modify Protection bit
cannot be modified
Software Protection
(1)
(1)
(1)
(1)
Table 7
23/80
and
Related parts for M29DW641F70N1
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Numonyx Wireless Flash Memory (W18)
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
Numonyx StrataFlash Wireless Memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
8 Mbit, low voltage, Page-Erasable Serial Flash memory with byte alterability and a 50 MHz SPI bus interface
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
128 Mbit (8 Mb ×16, multiple bank, multilevel interface, burst) 1.8 V supply, secure Flash memories
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
64-Mbit, dual I/O, 4-Kbyte subsector erase, serial flash memory with 75 MHz SPI bus interface
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
512 Kbit, serial Flash memory, 50 MHz SPI bus interface
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
1 Mbit, serial Flash memory, 50 MHz SPI bus interface
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
16 Mbit, serial Flash memory, 75 MHz SPI bus interface
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
Wireless Flash Memory (W18/W30 SCSP)
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
StrataFlash® Cellular Memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V supply Flash memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
128 Mbit (8 Mb x 16, multiple bank, page, dual boot) 3 V supply Flash memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 8:24, Boot Block) 3V Supply Flash Memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 16:16, Boot Block) 3V Supply Flash Memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet:
Part Number:
Description:
64 Mbit (8Mb x8 or 4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
Manufacturer:
NUMONYX [Numonyx B.V]
Datasheet: