Rohm SENSEKIT1-EVK-101, Руководство пользователя

Страница: 13 / 26

Sensor Evaluation Kit User Manual Rev1.0
13
Figure 20: BH1620FVC Breakout Board Schematic
Table 3: BH1620FVC Breakout Board - Gain Mode Configuration
Figure 21: BH1620FVC Breakout Board – Sample Output
Mode Install Do Not Install GC1 GC2 Illuminance Detection Range
Shutdown R128, R130 R129, R131 0 0 -
H-Gain (default) R129, R130 R128, R131 0 1 ~1,000
M-Gain R128, R131 R129, R130 1 0 ~10,000
L-Gain R128, R131 R128, R130 1 1 ~100,00
Based on the Gain Mode read from Pins GPIO0 and GPIO1 in Header 1 and the 10bit ADC value converted at the ADC0
pin of Sensor Interface Header 2, the illuminance at the ALS surface (EV) is calculated using the following equations:
• H-Gain Mode
Where V is the voltage at the output pin of BH1620FVC and R
132
= 5.6kΩ
• M-Gain Mode
• L-Gain Mode
The feedback LEDs display the 8bit ADC value scaled from the 10bit ADC at the output pin of BH1620FVC (via 2bit right
shift).