Newland NLS-EM20-M37, Руководство по интеграции

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I/O Voltage
Table 3-2
VDD=3.3 V, VSS=0 V, T=23°C
Parameter Minimum Maximum Unit
VIL -0.3 0.8 V
VIH 2.0 3.6 V
VOL VSS 0.4 V
VOH 2.4 VDD V
Timing Sequence
Power Up and Power Down Timing Sequence
Figure 3-1
1. In the diagram above, it takes A+B (about 940ms) for the engine to power up: A is reset time (about 280ms), 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 700ms.