STM32L4
LCD Glass controller (LCD)
Main features (1/2)
• High Flexibility Frame Rates
• Drive up to 320 (8x40) or 176(4x44) picture elements (pixels)
• Programmable duty and bias
• Duty: Static, 1/2, 1/3, 1/4, 1/8
• Bias: Static, 1/2, 1/3, 1/4
• Low Power Waveform to reduce consumption
• Software selection between external and internal voltage source
• In case of an external source,the internal boost circuit is disabled to reduce power
consumption
• Double buffer memory
• LCD data RAM of up to 16 x 32-bit registers which contain pixel information
(active/inactive)
• Start of frame interrupt to synchronize the software when updating the LCD data
RAM.
• Contrast Control whatever power supply voltage source
78
Frame ~30 Hz to
~100 Hz
