M29W400DT, M29W400DB
Signal descriptions
2.11
V
CC
supply voltage
The V
CC
supply voltage supplies the power for all operations (Read, Program, Erase etc.).
The command interface is disabled when the V
CC
supply voltage is less than the lockout
voltage, V
LKO
. This prevents Bus Write operations from accidentally damaging the data
during 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 0.1 µF capacitor should be connected between the V
CC
supply voltage pin and the V
SS
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
CC3
.
2.12
V
SS
ground
The V
SS
ground is the reference for all voltage measurements.
15/48
NUMONYX [ NUMONYX B.V ]
