Rp Data

t

SPI

SPI: INTB Pin Mode Changed to DRDYB

CSB

INTB

Threshold High

Threshold Low

Threshold High

Threshold Low

INTB

Rp Data

t

LDC1041

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SNOSCY1 – MARCH 2014

Device Functional Modes (continued)

Figure 11. Behavior Of INTB Terminal In Comparator Mode

7.4.2.2 Wake-Up Mode

In Wake-Up mode, the INTB terminal is asserted when proximity register value increases above Threshold High

and de-asserted when wake-up mode is disabled in INTB terminal mode register.

This mode can be used to wake-up an MCU from sleep, to conserve power.

Figure 12. Behavior Of INTB Terminal In Wake-Up Mode

7.4.2.3 DRDYB Mode

In DRDY(Data Ready) mode, the INTB terminal is asserted every time the conversion data is available and de-

asserted once the read command on register 0x22 is registered internally; if the read is in progress, the terminal

is pulsed instead. The valid condition for new data availability is CSB high and DRDYB falling edge.

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