| LCD (liquid crystal display)The LCD drives up to 8 common terminals and 44 segment terminals to drive up to 320pixels.●Internal step-up converter to guarantee functionality and contrast control irrespective ofVDD. This converter can be deactivated, in which case the VLCD pin is used to providethe voltage to the LCD●Supports static, 1/2, 1/3, 1/4 and 1/8 duty●Supports static, 1/2, 1/3 and 1/4 bias●Phase inversion to reduce power consumption and EMI●Up to 8 pixels can be programmed to blink●Unneeded segments and common pins can be used as general I/O pins●LCD RAM can be updated at any time owing to a double-buffer●The LCD controller can operate in Stop modDC (analog-to-digital converter)A 12-bit analog-to-digital converters is embedded into STM32L15xxx devices with up to 24external channels, performing conversions in single-shot or scan mode. In scan mode,automatic conversion is performed on a selected group of analog inputs.The ADC can be served by the DMA controller.An analog watchdog feature allows very precise monitoring of the converted voltage of one,some or all selected channels. An interrupt is generated when the converted voltage isoutside the programmed thresholds.The events generated by the general-purpose timers (TIMx) can be internally connected tothe ADC start trigger and injection trigger, to allow the application to synchronize A/Dconversions and timers. An injection mode allows high priority conversions to be done byinterrupting a scan mode which runs in as a background task.The ADC includes a specific low power mode. The converter is able to operate at maximumspeed even if the CPU is operating at a very low frequency and has an auto-shutdownfunction. The ADC’s runtime and analog front-end current consumption are thus minimizedwhatever the MCU operating mode |
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