m29dw128f-70za6t Numonyx, m29dw128f-70za6t Datasheet - Page 14

• Manufacturer Part Number: m29dw128f-70za6t
• Description: 128 Mbit 16mb X8 Or 8mb X16, Multiple Bank, Page, Boot Block 3v Supply Flash Memory
• Manufacturer: Numonyx

Signal descriptions
2
2.1
2.2
2.3
2.4
2.5
2.6
14/94
Signal descriptions
See
connected to this device.
Address Inputs (A0-A22)
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 Program/Erase Controller.
Data Inputs/Outputs (DQ0-DQ7)
The Data I/O outputs 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 internal state machine.
Data Inputs/Outputs (DQ8-DQ14)
The Data I/O outputs the data stored at the selected address during a Bus Read operation
when BYTE is High, V
impedance. During Bus Write operations the Command Register does not use these bits.
When reading the Status Register these bits should be ignored.
Data Input/Output or Address Input (DQ15A–1)
When the device is in x16 Bus mode, this pin behaves as a Data Input/Output pin (as DQ8-
DQ14). When the device is in x8 Bus mode, this pin behaves as an address pin; DQ15A–1
Low will select the LSB of the addressed Word, DQ15A–1 High will select the MSB.
Throughout the text consider references to the Data Input/Output to include this pin when
the device operates in x16 bus mode and references to the Address Inputs to include this
pin when the device operates in x8 bus mode except when stated explicitly otherwise.
Chip Enable (E)
The Chip Enable pin, 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 pin, G, controls the Bus Read operation of the memory.
Figure 1: Logic diagram
IH
. When BYTE is Low, V
, and
Table 1: Signal names
IH
IL
, all other pins are ignored.
, these pins are not used and are high
, for a brief overview of the signals
M29DW128F