M29DW128F60NF1 STMICROELECTRONICS [STMicroelectronics], M29DW128F60NF1 Datasheet - Page 18

• Manufacturer Part Number: M29DW128F60NF1
• Description: 128 Mbit (16Mb x8 or 8Mb x16, Multiple Bank, Page, Boot Block) 3V Supply, Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

3 Bus operations
3.5
3.6
3.6.1
3.6.2
3.6.3
3.6.4
18/93
Automatic Standby
If CMOS levels (V
the memory enters Automatic Standby where the internal Supply Current is reduced to the
Standby Supply Current, I
operation is in progress.
Special Bus Operations
Additional bus operations can be performed to read the Electronic Signature, verify the
Protection Status of the Extended Memory Block (second section), and apply and remove
Block Protection. These bus operations are intended for use by programming equipment and
are not usually used in applications. They require V
Read Electronic Signature
The memory has two codes, the Manufacturer code and the Device code used to identify the
memory. These codes can accessed by performing read operations with control signals and
addresses set as shown in
These codes can also be accessed by issuing an Auto Select command (see
command
Verify Extended Block Protection Indicator
The Extended Block is divided in two sections of which one is Factory Locked and the second
one is either Customer Lockable or Customer Locked.
The Protection Status of the second section of the Extended Block (Customer Lockable or
Customer Locked) can be accessed by reading the Extended Block Protection Indicator. This is
performed by applying the signals as shown in
the Extended Block is then output on bits DQ7 and DQ6 of the Data Input/Outputs. (see
and
The Protection Status of the Extended Block can also be accessed by issuing an Auto Select
command (see
Verify Block Protection Status
The Protection Status of a Block can be directly accessed by performing a read operation with
control signals and addresses set as shown in
If the Block is protected, then 01h (in x8 mode) is output on Data Input/Outputs DQ0-DQ7,
otherwise 00h is output.
Hardware Block Protect
The V
at V
the Block Protection Status or the Reset/Block Temporary Unprotect pin state.
IL
Table
PP
the four outermost parameter blocks are protected and remain protected regardless of
/WP pin can be used to protect the four outermost parameter blocks. When V
6, Bus Operations).
in
Section 6: Command
Auto Select command
CC
± 0.2V) are used to drive the bus and the bus is inactive for 300ns or more
CC2
Table 4
. The Data Inputs/Outputs will still output data if a Bus Read
Interface).
and
in
Table
Section 6: Command
6.
Table 5
Table 5
ID
to be applied to some pins.
and
and
Table
Table
Interface).
8.
8. The Protection Status of
Auto Select
M29DW128F
PP
Table 3
/WP is