STMicroelectronics Discovery kit for STM32L151/152 line - with STM32L152RC MCU STM32L152C-DISCO STM32L152C-DISCO Hoja De Datos

DocID022799 Rev 6

The LCD drives up to 8 common terminals and 44 segment terminals to drive up to 320 
pixels.


Internal step-up converter to guarantee functionality and contrast control irrespective of 
V

DD

. This converter can be deactivated, in which case the V

LCD

 pin is used to provide 

the 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 mode



V

LCD

 rail decoupling capability

          

A 12-bit analog-to-digital converters is embedded into STM32L15xxC devices with up to 25 
external channels, performing conversions in single-shot or scan mode. In scan mode, 
automatic conversion is performed on a selected group of analog inputs with up to 24 
external channels in a group.

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 scanned channels. An interrupt is generated when the converted voltage is 
outside the programmed thresholds.

The events generated by the general-purpose timers (TIMx) can be internally connected to 
the ADC start triggers, to allow the application to synchronize A/D conversions and timers. 
An injection mode allows high priority conversions to be done by interrupting 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 maximum 
speed even if the CPU is operating at a very low frequency and has an auto-shutdown 
function. The ADC’s runtime and analog front-end current consumption are thus minimized 
whatever the MCU operating mode.

V

RAIL1

1/2 V

LCD

2/3 V

LCD

1/2 V

LCD

PB2

V

RAIL2

N/A

1/3 V

LCD

1/4 V

LCD

PB12

PE11

V

RAIL3

N/A

N/A

3/4 V

LCD

PB0

PE12