The BL55021 is an LCD driver SSOP-48 manufactured by Belling. It is a low-power integrated circuit (IC) designed to provide data conversion from the temperature, voltage, and current levels of Liquid Crystal Displays (LCDs) to an I2C or SPI master interface. It includes 16-bit resolution digital-to-analog converters (DACs) for each segment and enables display of large characters and graphics. The IC is RoHS compliant and the package is SSOP-48. The operating temperature range for the BL55021 is -20 to 70 °C. It features low power consumption, high integration, small size, and high reliability.