Vesper Technologies Inc - Preliminary Version

Environmental Robustness

IP adherence is evaluated by 1kHz Sensitivity spec post stress

Ingress Protection Type

Description

Dust Resistance

IP5X

Water Immersion

IPX7; 2hrs drying time, dry environment

Microphone Modes

mode pin

Mic mode

high

Wake on Sound

10

GND

low, then latches high

after first wake-up event

low or

floating

Normal

83

audio

output

Tied to GND through low

impedance

Table 2: Effect of mode pin on microphone mode, supply current & output pins

Microphone Operation

The VM1010 is a user-controlled multi-mode microphone. Through the single-bit

digital input pin mode, the user provides a signal that will put the microphone in the

Wake on Sound or Normal mode of operation. When in the Wake on Sound mode,

should a sound be detected, the microphone will output a digital high through the

dout pin. The user can then switch the microphone to Normal mode by providing a

digital low to the mode pin. The user can at some later point provide a digital high

to the mode pin to return the microphone to Wake on Sound mode. Figure 5 shows

the states of various pins that are either user-provided (mode, Vdd) or VM1010-

provided (dout, Vout) at three points of operation.

Figure 5: Timing diagrams showing turn-on time (left), transition time into

Wake on Sound mode (center) & Normal mode (right)