> For the complete documentation index, see [llms.txt](https://bit-by-bit.gitbook.io/embedded-systems/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bit-by-bit.gitbook.io/embedded-systems/freedom-board-kl25z/familia-de-microcontroladores-kl25z.md).

# Família de microcontroladores KL25Z

##

![](/files/-LHGHVKgXhSgaWTH32io)

* Núcleo ARM® Cortex™-M0+;
* Memória de dados:
  * 16 KB SRAM.
* Memória de programa:
  * 128 KB Flash.
  * 64 byte flash cache.
* Fontes de clock para o MCU:
  * Cristal/Ressoador externo.
  * Gerador de clock de multipropósito (MCG): FLL - frequency-locked-loop; PLL - phased-locked-loop.
  * Referência interna de clock: 4MHz e 32kHz.
  * Oscilador RC 1kHz de baixo consumo.
* Gerenciamento de energia (PMC):
  * 9 modos de baixo consumo.
* Bit Manipulation Engine (BME)
* Acesso Direto à Memória (DMA): 4 canais; até 63 fontes diferentes de requisição.
* Watchdog: Computer Operating Properly (COP) Watchdog.
* Conversor Analógico/Digital (ADC): 
  * 16 bits; 
  * Aproximações sucessivas (SAR);
  * 14 canais;
  * Suporte à DMA.
* Conversor Digital/Analógico (DAC):
  * 12 bits;
  * Suporte à DMA.
* Comparador analógico: 6-bit DAC interno.
* Timer/PWM (TPM):
  * 1 módulo com 6 canais / 2 módulos com 2 canais;
  * Temporizadores de Interrupção Periódica (PIT);
  * 1 módulo com 2 canais.
* Contador de Tempo Real (RTC);
* Temporizador de baixo consumo (LPTMR): 16 bits, Temporizador/Contador.
* Sytem Tick Timer;
* Universal Serial Bus (USB):
  * Full speed 2.0, On-The-Go (OTG).
* Serial Peripheral Interface (SPI): 2 módulos.
* Inter-Intergrated Circuit (I2C): 2 módulos.
* Universal Asynchronous Receiver/Transmitter (UART):
  * 2 módulos stdio UART;
  * 1 módulo low power.
* Entradas e Saídas de Propósito Geral (GPIO):
  * 66 I/O;
  * Suporte à Interrupção e DMA;
* Touch Sense Input (TSI) 16 canais.


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