M29DW128F70NF6E NUMONYX, M29DW128F70NF6E Datasheet - Page 42

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M29DW128F70NF6E

Manufacturer Part Number
M29DW128F70NF6E
Description
IC FLASH 128MBIT 70NS 56TSOP
Manufacturer
NUMONYX
Series
Axcell™r
Datasheet

Specifications of M29DW128F70NF6E

Format - Memory
FLASH
Memory Type
FLASH - Nor
Memory Size
128M (16Mx8, 8Mx16)
Speed
70ns
Interface
Parallel
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
56-TSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Command interface
6.3.3
6.3.4
6.3.5
42/94
Set Extended Block Protection bit command
The Set Extended Block Protection bit command programs the Extended Block Protection
bit to ‘1’ thus preventing the second section of the Extended Block from being programmed.
A Read/Reset command must be issued to abort a Set Extended Block Protection bit
command.
Six successive steps are required to issue the Set Extended Block Protection bit command.
1.
2.
3.
4.
Verify Extended Block Protection bit command
The Verify Extended Block Protection bit command reads the status of the Extended Block
Protection bit on bit DQ0 of the Data Inputs/Outputs. If DQ0 is ‘1’, the second section of the
Extended Block is protected from program operations.
Password Program command
The Password Program Command is used to program the 64-bit Password used in
Password Protection mode.
Four cycles are required to program the Password:
1.
2.
3.
To program the 64-bit Password, the complete command sequence must be entered four
times at four consecutive addresses selected by A1 to A0.
Read operations can be used to read the Status Register during a Password Program
operation. All other operations are forbidden.
The Password can be checked by issuing a Password Verify command.
Once Password Program operation has completed, a Read/ Reset command must be
issued to return the device to Read mode. The Password Protection mode can then be
selected.
By default, all Password bits are set to ‘1’.
The command starts with two unlock cycles.
The third Bus Write cycle sets up the Set Extended Block Protection bit command.
The fourth Bus Write Cycle programs the Extended Block Protection bit to ‘1’.
The last two cycles verify the value programmed at the Extended Block Protection bit
address: if bit DQ0 of Data Inputs/Outputs is set to ’1’, it indicates that the Extended
Block Protection bit has been successfully programmed. If DQ0 is ‘0’, the Set Extended
Block Protection bit command must be issued and verified again.
The first two cycles are unlock cycles.
The third cycle issues the Password Program command.
The fourth cycle inputs the 16-bit data required to program the Password.
M29DW128F

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