I/O Voltage; Timing Sequence; Power Up And Power Down Timing Sequence - Newland EM50S-10 Integration Manual

I/O Voltage

Table 3-2
VDD=3.3 V, VSS=0 V, T=23° C
Parameter
VIL
VIH
VOL
VOH

Timing Sequence

Power Up and Power Down Timing Sequence

1. In the diagram above, it takes A+B (less than 1s) for the engine to power up: A is reset time (about 560ms), B is time
needed to start the engine (including bootloader execution, kernel boot and decoding chip initialization). The engine is
ready to receive commands via its serial/USB port after the power-up sequence completes.
2. C is the time it takes to power down the engine (during power-down, all voltages in the engine ramp down, with all
communication stopped and all signals at a low level). To ensure that all voltages are fully down and signals on the
interfaces at a low level, the minimum interval between removing and resupplying the power must exceed 2s.
Minimum
VSS
2.0
VSS
2.4
Figure 3-1
Maximum
0.8
VDD
0.4
VDD
Unit
V
V
V
V
20