MCP6S21/2/6/8
5.4
Power-On Reset
If the power supply voltage goes below the POR trip
voltage (V DD < V POR ≈ 1.7V), the internal POR circuit
will reset all of the internal registers to their power-up
defaults (this is a protection against low power supply
voltages). The POR circuit also holds the part in shut-
down mode while it is activated. It temporarily overrides
the software shutdown status. The POR releases the
shutdown circuitry once it is released (V DD > V POR ).
A 0.1 μF bypass capacitor mounted as close as possi-
ble to the V DD pin provides additional transient
immunity.
DS21117A-page 24
? 2003 Microchip Technology Inc.
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