VM6101

Functional description

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The light response can be approximated by:

●

Y channel:

-0.960

●

R channel:

-0.902

●

G channel:

-0.944

●

B channel:

-0.973

Example:

t = 9.3 ms for 300 lx.

Each channel provides three status flags and a counter value:

●

RESET: This flag is set upon reset or power-down resume. The counter value is invalid

and should be discarded. This flag is cleared after a status read operation.

●

OVERFLOW: at least one counter overflow occurred: the counter value is invalid and

should be discarded. This flag is cleared when a new valid counter value is available.

●

READY: a new counter value is available. This flag is cleared immediately after the

status register read.

●

CNT: a 27-bit counter value, mapped in 4 consecutive bytes, MSB first and right

justified.

Channel readout must always start by reading the corresponding status register. The

suggested read operation is a 5-byte read operation starting at the status register address.

Refer to

Chapter 4: Register description for details.

2.2

Comparator logic

This function compares the light level (i.e. channel counter CNT) with two programmable

thresholds (TH_LO and TH_HI) and drives the INT pin accordingly. The following table

shows available configurations using TH_CFG register setup: