SPECIFICATIONS

1. Product introduction：

BH1750 illuminency sensor module is based on the BH1750FvI chip which integrates the peripheral LDO, level conversion chip and 2c pull-up resistor. It expands the double row of gold row pinholes and stamp holes with 2.54mm spacing, which is convenient for users to weld and extend, and can also be directly affixed to users' products. The module adopts 2c communication. Support wide working voltage and wide communication signal. Adopt the mode of modular braiding tape.

2. Main characteristics：

• Working voltage 2.5~5.5V

• I2c bus interface

• Spectral sensitivity characteristics close to visual sensitivity

• Output the numeric value of the corresponding brightness

• Wide range and high resolution (1-655351x)

• Low current is realized through the power off function

• Light source dependence is minimal. (e.g. incandescent lamp, fluorescent lamp, halogen lamp, white LED, fluorescent lamp)

• Small measurement deviation (+/-20%)

• Infrared has little effect

3. Foot position description:

• VCC: Power input

• GND: electrically

• SCL: I2C clock with built-in 10K pull-up

• SDA: I2C data with built-in 10K pull-up

• NC: Empty foot

• GND: electrically

• ADDR: Address configuration pin, black recognition 1OK drop - down low level

• 3V3: 3.3V output pin

4. Application field:

• Mobile phone 

• LCD TV

• Laptop

• Portable game console

• Digital camera

• Digital video camera

• Car navigation

• PDA

• LCD monitor

5. Internal block diagram:

6. Function introduction:

This module reads data through the I2c interface. ADDR black x identifies pulled-down ground, corresponding to the I2c device address b0100011X, x is the read/write bit. If ADDR connects to 3.3v, the address b1011100x is the read/write bit.

BH1750FVI is a digital optical intensity sensor integrated chip. EH1750 is composed of PD photodiode, operational amplifier, ADc acquisition, crystal oscillator and so on.

The P photosensitive diode converts the input optical signal into an electrical signal through the optically generated volt-effect, which is amplified by the operational amplifier circuit, then the voltage is collected by the ADC, and then converted into a 16-bit binary number through the logic circuit and stored in the internal register (Note: the stronger the light entering the optical window, the greater the photocurrent and the greater the voltage). EH1750 leads to the clock line and data line, the MCU can communicate with BH1750 module through Iac protocol, you can choose the working mode of BH1750, you can also extract the illumination data of EBE1750 register.

7. Application schematic diagram:

8. Product size: