M28W640HCT70N6E NUMONYX, M28W640HCT70N6E Datasheet - Page 13

• Manufacturer Part Number: M28W640HCT70N6E
• Description: TSOP-1 48 12X20 CUSTD FLASH
• Manufacturer: NUMONYX

M28W640HCT, M28W640HCB
2.7
2.8
2.9
2.10
Note:
Reset (RP)
The Reset input provides a hardware reset of the memory. When Reset is at V
memory is in reset mode: the outputs are high impedance and the current consumption is
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
is the main power supply for all operations (read, program and erase).
V
V
voltage range applied to the pin. The supply voltage, V
V
If V
a voltage lower than V
V
values). V
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
must be stable until the Program/Erase algorithm is completed (see
V
V
Each device in a system should have V
to the pin. See
sufficient to carry the required V
DD
PP
PP
PP
SS
DD
PP
SS
PP
PP
, can be applied in any order.
is both a control input and a power supply pin. The two functions are selected by the
> V
is the reference for all voltage measurements.
provides the power supply to the internal core and the I/O pins of the memory device. It
is kept in a low voltage range (0 V to 3.6 V) V
program supply voltage
is in the range 11.4 V to 12.6 V it acts as a power supply pin. In this condition V
ground
supply voltage
PP1
PP
enables these functions (see
is only sampled at the beginning of a program or erase; a change in its value
Figure 7: AC measurement load
PPLK
gives an absolute protection against program or erase, while
PP
program and erase currents.
DD
Table 15: DC
and V
circuit. The PCB track widths should be
PP
PP
decoupled with a 0.1 µF capacitor close
is seen as a control input. In this case
DD
characteristics, for the relevant
, and the program supply voltage,
Table 17
Signal descriptions
IH
and
, the device is
IL
, the
Table
PP
13/72
18).