STM8L151C8 datasheet(19/134 Pages) STMICROELECTRONICS

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STM8L15xx8, STM8L15xR6

Functional overview

3.6

LCD (Liquid crystal display)

The LCD is only available on STM8L152xx devices.

The liquid crystal display drives up to 8 common terminals and up to 40 segment terminals

to drive up to 320 pixels. It can also be configured to drive up to 4 common and 44

segments (up to 176 pixels).

•

Internal step-up converter to guarantee contrast control whatever VDD.

•

Static 1/2, 1/3, 1/4, 1/8 duty supported.

•

Static 1/2, 1/3, 1/4 bias supported.

•

Phase inversion to reduce power consumption and EMI.

•

Up to 8 pixels which can programmed to blink.

•

The LCD controller can operate in Halt mode.

Note:

Unnecessary segments and common pins can be used as general I/O pins.

3.7

Memories

The high density and medium+ density STM8L15xx devices have the following main

features:

•

Up to 4 Kbytes of RAM

•

The non-volatile memory is divided into three arrays:

–

Up to 64 Kbytes of medium-density embedded Flash program memory

–

Up to 2 Kbytes of Data EEPROM

–

Option bytes.

The EEPROM embeds the error correction code (ECC) feature. It supports the read-while-

write (RWW): it is possible to execute the code from the program matrix while

programming/erasing the data matrix.

The option byte protects part of the Flash program memory from write and readout piracy.

3.8

DMA

A 4-channel direct memory access controller (DMA1) offers a memory-to-memory and

peripherals-from/to-memory transfer capability. The 4 channels are shared between the

following IPs with DMA capability: ADC1, DAC1,DAC2, I2C1, SPI1, SPI2, USART1,

USART2, USART3, and the 5 Timers.

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