SI106X Datasheet, PDF (243/358 Pages) –

Si106x/108x
21.3.1. Radio Power on Reset (POR)
A Power On Reset (POR) sequence is used to boot the device up from a fully off or shutdown state. To
execute this process, VDD must ramp within 1ms and must remain applied to the device for at least 10 ms.
If VDD is removed, then it must stay below 0.15 V for at least 10 ms before being applied again. See
Figure 21.5 and Table 21.5 for details.
V_DD
V_{R RH}
V_{R RL}
t_SR t_PORH
Time
Figure 21.5. POR Timing Diagram
Table 21.5. POR Timing
Variable
t_PORH
t_PORL
V_RRH
V_RRL
t_SR
Description
High time for VDD to fully settle POR circuit
Low time for VDD to enable POR
Voltage for successful POR
Starting Voltage for successful POR
Slew rate of VDD for successful POR
Min
Typ
10
—
10
—
90% x Vdd —
0
—
—
—
Max Units
—
ms
—
ms
—
V
150 mV
1
ms
243
Rev. 1.0