M29DW641F70N1 NUMONYX [Numonyx B.V], M29DW641F70N1 Datasheet - Page 13
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
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M29DW641F
2
2.1
2.2
2.3
2.4
2.5
2.6
Signal descriptions
See
connected to this device.
Address Inputs (A0-A21)
The Address Inputs select the cells in the memory array to access during Bus Read
Operations. During Bus Write Operations they control the commands sent to the Command
Interface of the internal state machine.
Data Inputs/Outputs (DQ0-DQ15)
The Data I/O output the data stored at the selected address during a Bus Read Operation.
During Bus Write Operations they represent the commands sent to the Command Interface
of the Program/Erase Controller.
Chip Enable (E)
The Chip Enable, E, activates the memory, allowing Bus Read and Bus Write Operations to
be performed. When Chip Enable is High, V
Output Enable (G)
The Output Enable, G, controls the Bus Read Operation of the memory.
Write Enable (W)
The Write Enable, W, controls the Bus Write Operation of the memory’s Command
Interface.
V
The V
Protect is Low, V
blocks (two at the top, and two at the bottom of the address space). Program and erase
Operations in these blocks are ignored while V
V
When V
the four outermost parameter blocks. Program and Erase Operations can now modify the
data in these blocks unless the blocks are protected using Block Protection.
Applying V
(including the four outermost parameter blocks) using a High voltage Block Protection
ID
PP
.
Figure 1: Logic diagram
/Write Protect (V
PP
PP
/Write Protect pin is both a power supply and a write protect pin. When V
/Write Protect is High, V
PPH
to the V
IL
, it is seen as a write protect pin protecting the four outermost parameter
PP
/WP pin will temporarily unprotect any block previously protected
, and
PP
/WP)
Table 1: Signal names
IH
, the memory reverts to the previous protection state of
IH
, all other pins are ignored.
PP
/Write Protect is Low, even when RP is at
, for a brief overview of the signals
Signal descriptions
PP
/Write
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