ST STM32L4 5 Series User Manual

DocID024597 Rev 5 759/1830
RM0351 Liquid crystal display controller (LCD)
787
25.3 LCD functional description
25.3.1 General description
The LCD controller has five main blocks (see Figure 171):
Figure 171. LCD controller block diagram
Note: LCDCLK is the same as RTCCLK. Please refer to the RTC/LCD clock description in the
RCC section of this manual.
The frequency generator allows you to achieve various LCD frame rates starting from an
LCD input clock frequency (LCDCLK) which can vary from 32 kHz up to 1 MHz.
3 different clock sources can be used to provide the LCD clock (LCDCLK/RTCCLK):
• 32 kHz Low speed external RC (LSE)
• 32 kHz Low speed internal RC (LSI)
• High speed external (HSE) divided by 32
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ST STM32L4 5 Series Specifications

General

Brand	ST
Model	STM32L4 5 Series
Category	Microcontrollers
Language	English