m28w320fcb STMicroelectronics, m28w320fcb Datasheet - Page 13

• Manufacturer Part Number: m28w320fcb
• Description: 32 Mbit 2mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

M28W320FCT, M28W320FCB
2.8
2.9
2.10
2.11
minimized. After Reset all blocks are in the Locked state. When Reset is at V
in normal operation. Exiting reset mode the device enters read array mode, but a negative
transition of Chip Enable or a change of the address is required to ensure valid data outputs.
V
V
power supply for all operations (Read, Program and Erase).
V
V
independently from V
V
V
voltage range applied to the pin. The Supply Voltage V
V
If V
a voltage lower than V
V
at the beginning of a Program or Erase; a change in its value after the operation has started
does not have any effect on Program or Erase, however for Double or Quadruple Word
Program the results are uncertain.
If V
be stable until the Program/Erase algorithm is completed (see
V
V
Note: Each device in a system should have V
capacitor close to the pin. See
widths should be sufficient to carry the required V
DD
DDQ
PP
PP
PP
SS
DD
DDQ
PP
SS
PP
PP
> V
is both a control input and a power supply pin. The two functions are selected by the
can be applied in any order.
is the reference for all voltage measurements.
provides the power supply to the internal core of the memory device. It is the main
provides the power supply to the I/O pins and enables all Outputs to be powered
Program supply voltage
is in the range 11.4V to 12.6V it acts as a power supply pin. In this condition V
ground
is kept in a low voltage range (0V to 3.6V) V
supply voltage
PP1
supply voltage
enables these functions (see
DD
PPLK
. V
DDQ
gives an absolute protection against program or erase, while
Figure 7: AC Measurement Load
can be tied to V
Table 15: DC
DD
DD
, V
PP
PP
or can use a separate supply.
DDQ
program and erase currents.
is seen as a control input. In this case
Characteristics). V
DD
and V
and the Program Supply Voltage
PP
Table 17
decoupled with a 0.1µF
Circuit. The PCB trace
Signal descriptions
and
PP
IH
is only sampled
Table
, the device is
18).
PP
must
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