TCS37715FN datasheet(23/49 Pages) OSRAM

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Page 22

ams Datasheet

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[v1-31] 2018-Apr-04

TCS3771 − Principles of Operation

State Diagram

Figure 26 shows a more detailed flow for the state machine. The

device starts in the sleep mode. The PON bit is written to enable

the device. A 2.4ms delay will occur before entering the start

state. If the PEN bit is set, the state machine will step through

the proximity states of proximity accumulate and then

proximity ADC conversion. As soon as the conversion is

complete, the state machine will move to the following state.

If the WEN bit is set, the state machine will then cycle through

the wait state. If the WLONG bit is set, the wait cycles are

extended by 12× over normal operation. When the wait counter

terminates, the state machine will step to the RGBC state.

The AEN should always be set, even in proximity-only operation.

In this case, a minimum of 1 integration time step should be

programmed. The RGBC state machine will continue until it

reaches the terminal count at which point the data will be

latched in the RGBC register and the interrupt set, if enabled.

Figure 26:

Expanded State Diagram

TCS37715FN Datasheet(PDF) 23 Page - OSRAM GmbH