s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 43

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 3
Analog-to-Digital Converter (ADC) Module
3.1 Introduction
This section describes the 10-bit analog-to-digital converter (ADC).
For further information regarding analog-to-digital converters on Freescale microcontrollers, please
consult the HC08 ADC Reference Manual, ADCRM/AD.
3.2 Features
Features of the ADC module include:
3.3 Functional Description
Eight ADC channels are available for sampling external sources at pins PTB7:PTB0. To achieve the best
possible accuracy, these pins are implemented as input-only pins when the analog-to-digital (A/D) feature
is enabled. An analog multiplexer allows the single ADC to select one of the 8 ADC channels as ADC
voltage IN (ADCVIN). ADCVIN is converted by the successive approximation algorithm. When the
conversion is completed, the ADC places the result in the ADC data register (ADRH and ADRL) and sets
a flag or generates an interrupt. See
Freescale Semiconductor
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8 channels with multiplexed input
Linear successive approximation
10-bit resolution, 8-bit accuracy
Single or continuous conversion
Conversion complete flag or conversion complete interrupt
Selectable ADC clock
Left or right justified result
Left justified sign data mode
High impedance buffered ADC input
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
Figure
3-2.
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