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STM8AL3188TCX Datasheet(PDF) 20 Page - STMicroelectronics |
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STM8AL3188TCX Datasheet(HTML) 20 Page - STMicroelectronics |
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20 / 131 page  Functional overview STM8AL318x STM8AL3L8x 20/131 DocID027179 Rev 6 3.6 LCD (Liquid crystal display) The LCD is only available on STM8AL3L8x devices. The liquid crystal display drives up to 8 common terminals and up to 40 segment terminals to drive up to 320 pixels. This LCD is configurable 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 programmable to blink. • The LCD controller operating in Halt mode. Note: Unnecessary segments and common pins can be used as general I/O pins. 3.7 Memories The high-density STM8AL3x8x devices have the following main features: • 4 Kbytes of RAM • The non-volatile memory is divided into three arrays: – 64 Kbytes of medium-density embedded Flash program memory – 2 Kbytes of Data EEPROM – Option byte. The memory 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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