參數(shù)資料
型號(hào)： VM6101V008
廠商： 意法半導(dǎo)體
英文描述： IC color light sensor
中文描述： 余C顏色光傳感器
文件頁(yè)數(shù)： 5/17頁(yè)
文件大?。?/td> 159K
代理商： VM6101V008
VM6101
Functional description
5/17
The light response can be approximated by:
Y channel:
R channel:
G channel:
B channel:
●
E
vY
= 1.58e6 x count
-0.960
E
vR
= 3.34e6 x count
-0.902
E
vG
= 4.92e6 x count
-0.944
E
vB
= 8.03e6 x count
-0.973
●
●
●
The response time is: t = count / f
OSC
+ serial interface read time (about 200
μ
s)
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:
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