m29dw128f-70za6t Numonyx, m29dw128f-70za6t Datasheet - Page 16

• 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
2.9
2.10
2.11
16/94
Reset/Block Temporary Unprotect (RP)
The Reset/Block Temporary Unprotect pin can be used to apply a Hardware Reset to the
memory or to temporarily unprotect all the blocks previously protected using a High Voltage
Block Protection technique (In-System or Programmer technique).
Note that if V
even if RP is at V
A Hardware Reset is achieved by holding Reset/Block Temporary Unprotect Low, V
least t
ready for Bus Read and Bus Write operations after t
See the Ready/Busy Output section,
characteristics
Holding RP at V
Voltage Block Protection technique. Program and erase operations on all blocks will be
possible. The transition from V
Ready/Busy Output (RB)
The Ready/Busy pin is an open-drain output that can be used to identify when the device is
performing a Program or erase operation. During Program or erase operations Ready/Busy
is Low, V
Erase Suspend mode.
After a Hardware Reset, Bus Read and Bus Write operations cannot begin until Ready/Busy
becomes high-impedance. See
characteristics
The use of an open-drain output allows the Ready/Busy pins from several memories to be
connected to a single pull-up resistor. A Low will then indicate that one, or more, of the
memories is busy.
Byte/Word Organization Select (BYTE)
It is used to switch between the x8 and x16 Bus modes of the memory when the
M29DW128F is delivered in TSOP56 package. When Byte/Word Organization Select is
Low, V
PLPX
IL
, the memory is in x8 mode, when it is High, V
OL
. After Reset/Block Temporary Unprotect goes High, V
. Ready/Busy is high-impedance during Read mode, Auto Select mode and
PP
and
and
/WP is at V
ID
ID
will temporarily unprotect all the blocks previously protected using a High
.
Figure 18
Figure 18
IL
, then the four outermost parameter blocks will remain protected
and
and
IH
Table 30: Reset/Block Temporary Unprotect AC
to V
Figure 19
Figure 19
ID
Table 30: Reset/Block Temporary Unprotect AC
must be slower than t
.
for more details.
PHEL
IH
, the memory is in x16 mode.
or t
RHEL
PHPHH
IH
, whichever occurs last.
, the memory will be
.
M29DW128F
IL
, for at