ALS-PDIC17-79NB-TR8_15 Datasheet, PDF (7/19 Pages) Everlight Electronics Co., Ltd – Digital Ambient Light Sensor

DATASHEET
SMD  I²C Digital Ambient Light Sensor
ALS-PDIC17-79NB/TR8
Fig 9 Dark Count vs. Temperature
Fig 10 Light Counts vs. Temperature
Fig 11 Spectrum
Fig 12 Relative Sensitivity vs. Angle
Communication Protocol
ALS-PDIC17-79NB contains an 8-bit command register that can be written and read via the I²C bus. The
command register controls the overall operation of the device. There is a two-byte word read-only register that contains
the latest converted value of A/D converter. The I²C slave address is hardwired internally as 00111001 (0x39, MSB to
LSB, A6 to A0). All the Send Byte protocol, the Receive Byte protocol and Receive Word protocol are implemented in
ALS-PDIC17-79NB.
The Send Byte protocol allows single bytes of data to be written to the device (see Figure 13-a). The written byte
is called the COMMAND byte. The Receive Byte protocol allows one-byte data to be read from the device (see Figure
13-b). Two-byte data can be read by following the Receive Word Protocol shown in Figure 13-c. In Figure 13, the clear
area represents data sent by the host (master) and the shaded area represents data returned by the ambient light
sensor (slave device).
Revi7sion _Copy:_rig3_{ht © 2010, Everlight All Rights Reserved. Release Date : 3.5.2012. Issue No: D}R_LSe_-l₀e₀a₀₀s₀e₃₄Date:2012-03-1_w6_w1_w2_.:_e0_v0_e:_r3_li3_g._h0_t.com
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