MC908GR8CDWE Datasheet, PDF (80/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
Analog-to-Digital Converter (ADC)
5.3 Features
Features of the ADC module include:
• Six channels with multiplexed input
• Linear successive approximation with monotonicity
• 8-bit resolution
• Single or continuous conversion
• Conversion complete flag or conversion complete interrupt
• Selectable ADC clock
5.4 Functional Description
The ADC provides six pins for sampling external sources at pins
PTB5/ATD5–PTB0/ATD0. An analog multiplexer allows the single ADC
converter to select one of six ADC channels as ADC voltage in (V_ADIN).
V_ADIN is converted by the successive approximation register-based
analog-to-digital converter. When the conversion is completed, ADC
places the result in the ADC data register and sets a flag or generates
an interrupt. See Figure 5-1.
NOTE:
References to DMA (direct-memory access) and associated functions
are only valid if the MCU has a DMA module. If the MCU has no DMA,
any DMA-related register bits should be left in their reset state for
expected MCU operation.
Technical Data
80
MC68HC908GR8 — Rev 4.0
Analog-to-Digital Converter (ADC)
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