Signal descriptions
M29W640GH, M29W640GL, M29W640GT, M29W640GB
2.12
VCC Supply Voltage
V
provides the power supply for all operations (Read, Program and Erase).
CC
The Command Interface is disabled when the V Supply Voltage is less than the Lockout
CC
Voltage, V
. This prevents Bus Write operations from accidentally damaging the data
LKO
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 0.1µF capacitor should be connected between the V Supply Voltage pin and the V
CC
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
2.13
VSS Ground
V
is the reference for all voltage measurements. The device features two V pins which
SS
SS
must be both connected to the system ground.
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NUMONYX [ NUMONYX B.V ]
