Instructions for Using HI3-DAC80V-5

1. Power Supply Connection:

   • Connect the VCC pin to the supply voltage (3.3V to 5V).
   • Connect the GND pin to the ground.

2. Reference Voltage:

   • Connect the REF pin to a stable 5V reference voltage source.

3. SPI Interface:

   • SCLK (Serial Clock): Connect this pin to the clock signal from your microcontroller.
   • MOSI (Master Out Slave In): Connect this pin to the data output from your microcontroller.
   • CS (Chip Select): Connect this pin to the chip select signal from your microcontroller. This pin must be pulled low to enable communication.
   • LDAC (Load DAC): Connect this pin to a control signal that can be used to update all DAC outputs simultaneously. If not used, connect it to VCC or GND as required by your application.

4. Output Configuration:

   • The DAC outputs (OUT0 to OUT7) will provide the analog voltage corresponding to the digital value written to each channel.

5. Programming the DAC:

   • Step 1: Set the CS pin low to select the DAC.
   • Step 2: Send the command byte followed by the 16-bit data for the desired channel.
   • Step 3: Set the CS pin high to complete the transaction.
   • Command Byte Format:
     • Bit 7-4: Channel address (0000 for channel 0, 0001 for channel 1, etc.)
     • Bit 3-0: Command code (0000 for write to selected channel)
   • Data Byte Format:
     • MSB First: Send the most significant byte first, followed by the least significant byte.

6. Example Code (Pseudocode):

   // Initialize SPI interface
   initialize_spi()
   
   // Select DAC channel 0
   channel = 0
   command_byte = (channel << 4) | 0x00
   
   // Set DAC value (e.g., 1024 out of 65535)
   dac_value = 1024
   msb = (dac_value >> 8) & 0xFF
   lsb = dac_value & 0xFF
   
   // Start transaction
   set_cs_low()
   send_byte(command_byte)
   send_byte(msb)
   send_byte(lsb)
   set_cs_high()
   

7. Powering Down:

   • To power down the device, set the VCC pin to 0V or disconnect the power supply.

8. Handling and Storage:

   • Store the device in a dry, cool place away from static electricity.
   • Handle with care to avoid damaging the pins and the internal circuitry.

By following these instructions, you can effectively integrate the HI3-DAC80V-5 into your project and achieve precise analog output control.