M29W256GH7AN6E NUMONYX, M29W256GH7AN6E Datasheet - Page 18

• Manufacturer Part Number: M29W256GH7AN6E
• Description: Flash Mem Parallel 3V/3.3V 256M-Bit 32M x 8/16M x 16 70ns 56-Pin TSOP Tray
• Manufacturer: NUMONYX

Specifications of M29W256GH7AN6E

• Package: 56TSOP
• Cell Type: NOR
• Density: 256 Mb
• Architecture: Sectored
• Block Organization: Symmetrical
• Location Of Boot Block: Bottom|Top
• Typical Operating Supply Voltage: 3|3.3 V
• Sector Size: 128KByte x 256
• Timing Type: Asynchronous
• Operating Temperature: -40 to 85 °C
• Interface Type: Parallel

3.7.1
3.7.2
3.7.3
3.7.4
18/97
Read electronic signature
The memory has two codes, the manufacturer code and the device code used to identify the
memory. These codes can be accessed by performing read operations with control signals
and addresses set as shown in
programmer method (8-bit mode)
- programmer method (16-bit
These codes can also be accessed by issuing an Auto Select command (see
Auto Select
Verify extended memory block protection indicator
The extended memory block is either factory locked or customer lockable.
The protection status of the extended memory block (factory locked or customer lockable)
can be accessed by reading the extended memory block protection indicator. It can be read
in auto select mode using either the programmer (see
method (see
The protection status of the extended memory block is then output on bit DQ7 of the data
input/outputs (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 0001h (in x 16 mode) is output on data input/outputs DQ0-
DQ15, otherwise 0000h is output.
Hardware block protect
The V
the highest (M29W256GH) or lowest block (M29W256GL) is protected and remains
protected regardless of the block protection status or the reset pin state.
PP
/WP pin can be used to protect the highest or lowest block. When V
command).
Table 12
Table 4
and
and
Table
mode).
Table
Table 6: Read electronic signature - auto select mode -
13).
and
5, Bus operations in 8-bit and 16-bit mode).
Table 7: Read electronic signature - auto select mode
Table 8
Table 8
and
and
Table
Table
9.
9) or the in-system
PP
Section 6.1.2:
/WP is at V
IL