M58LT256JST, M58LT256JSB
Signal descriptions
2.13
VSS ground
V
ground is the reference for the core supply. It must be connected to the system ground.
SS
2.14
VSSQ ground
V
ground is the reference for the input/output circuitry driven by V
. V
must be
SSQ
SSQ
DDQ
connected to V
SS
Note:
Each device in a system should have V , V
and V decoupled with a 0.1 µF ceramic
DD DDQ PP
capacitor close to the pin (high-frequency, inherently-low inductance capacitors should be
as close as possible to the package). See Figure 8: AC measurement load circuit. The PCB
track widths should be sufficient to carry the required V program and erase currents.
PP
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