M29DW128F60NF1 STMICROELECTRONICS [STMicroelectronics], M29DW128F60NF1 Datasheet - Page 16

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

2 Signal descriptions
2.10
2.11
2.12
2.13
2.14
16/93
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
Suspend mode.
After a Hardware Reset, Bus Read and Bus Write operations cannot begin until Ready/Busy
becomes high-impedance. See
and
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
is in x8 mode, when it is High, V
V
V
powered independently from V
V
V
The Command Interface is disabled when the V
Voltage, V
power up, power down and power surges. If the Program/Erase Controller is programming or
erasing during this time then the operation aborts and the memory contents being altered will
be invalid.
A 0.1µF capacitor should be connected between the V
Ground pin to decouple the current surges from the power supply. The PCB track widths must
be sufficient to carry the currents required during Program and erase operations, I
V
V
which must be connected to the system ground.
CCQ
CC
SS
CCQ
CC
SS
Figure 18
is the reference for all voltage measurements. The device features two V
provides the power supply for all operations (Read, Program and Erase).
provides the power supply to the I/O and control pins and enables all Outputs to be
Ground
OL
Supply Voltage (2.7V to 3.6V)
Supply Voltage
. Ready/Busy is high-impedance during Read mode, Auto Select mode and Erase
LKO
. This prevents Bus Write operations from accidentally damaging the data during
and
ID
will temporarily unprotect all the blocks previously protected using a High
Figure
19.
IH
CC
Table 30: Reset/Block Temporary Unprotect AC Characteristics
IH
to V
. V
, the memory is in x16 mode.
CCQ
ID
must be slower than t
can be tied to V
CC
Supply Voltage is less than the Lockout
CC
CC
Supply Voltage pin and the V
or can use a separate supply.
PHPHH
.
SS
IL
pins both of
M29DW128F
, the memory
CC2
.
SS