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Advanced Microcontroller ADC Features and Configuration Guide

This comprehensive guide covers the Analog-to-Digital Converter (ADC) functionalities in the STR912FW44 microcontroller, including its various modes, such as one-shot and continuous conversions. We discuss the architecture, including the 10-bit resolution and 8 input channels with a 0 to 3.6V range, and delve into configurations for efficient operation. The document also includes details on low power consumption modes, interrupt generation for watchdog functions, and initialization sequences for ADC control. A simplified block diagram and register maps for easy reference are provided, making it a vital resource for developers.

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Advanced Microcontroller ADC Features and Configuration Guide

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  1. Programming Microcontroller ADC – Analog Digital Converter Autumn term 2007 64K or 96K Byte SRAM Enet MAC ARM966E CORE w/DSP USB 2.0FS 96 MHz 256K or 512K Byte Burst Flash PFQ BC CAN 2.0B DMA INTR Cntl CLK Cntl 32K Byte Burst Flash GPIO OTP Mem LVD BOD EXT. Bus JTAG ETM9 PLL RTC TIM ADC SPI I2C UART RTC - Real Time Clock STR912FW44

  2. ADC clock: PCLK with a 8-bit frequency prescaler Resolution: 10 bits 8 input channels: 0 to 3.6V input range Single Channel / Scan modes Converts one or all 8 channels successively One-Shot or Continuous conversion Standby mode for low power consumption Analog watchdog with interrupt generation When the converted value is above or below a programmed threshold ADC Specifics RTC - Real Time Clock

  3. ADC Block diagram (simplified) RTC - Real Time Clock

  4. ADC register map RTC - Real Time Clock

  5. ADC Control Register RTC - Real Time Clock

  6. ADC Control Register (next) RTC - Real Time Clock

  7. ADC Channel Configuration Register RTC - Real Time Clock

  8. ADC Data Register RTC - Real Time Clock 

  9. Initialization Control register Set the Power on Reset bit (POR) Set the End of ConVersion Interrupt enable bit (ECIE) Clear the STaRt conversion bit (STR) Channel configuration register Specify the channel, which should work in conversion mode Interrupt service routine Read the result from the data register Control register Clear STR bit Clear End of ConVersion flag (ECV) ADC Configuration RTC - Real Time Clock

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