Datasheet

t
SPI
Data
Read
CSB
INTB
tODRt
CMD:
Read 0x21
Rp Data
t
SPI
SPI: INTB Pin Mode Changed to DRDYB
CSB
INTB
Threshold High
Threshold Low
LDC1000
www.ti.com SNOSCX2 –SEPTEMBER 2013
Wake-Up Mode
In Wake-Up mode, the INTB pin is asserted when proximity register value increases above Threshold High and
de-asserted when wake-up mode is disabled in INTB pin mode register.
This Mode can be used to wake-up an MCU which is asleep, to conserve power.
Figure 19. Behavior of INTB Pin in Wake-Up Mode
DRDYB Mode
In DRDY mode (default), the INTB pin is asserted every time the conversion data is available and de-asserted
once the read command on register 0x21 is registered internally; if the read is in progress, the pin is pulsed
instead.
Figure 20. Behavior of INTB Pin in DRDYB Mode
Copyright © 2013, Texas Instruments Incorporated 21
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