MC68HC08AS20 Datasheet, PDF (306/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

19.2 Introduction
This section describes the analog-to-digital converter (ADC). The ADC
is an 8-bit analog-to-digital converter.
19.3 Features
Features of the ADC module include:
• 15 Channels (52-PLCC) with Multiplexed Input
• Linear Successive Approximation
• 8-Bit Resolution
• Single or Continuous Conversion
• Conversion Complete Flag or Conversion Complete Interrupt
• Selectable ADC Clock
19.4 Functional Description
Fifteen ADC channels are available for sampling external sources at
pins PTD6/ATD14/TCLK–PTD0/ATD8 and PTB7/ATD7–PTB0/ATD0.
An analog multiplexer allows the single ADC converter to select one of
the 15 ADC channels as ADC voltage input (ADCVIN). ADCVIN is
converted by the successive approximation register-based counters.
When the conversion is completed, ADC places the result in the ADC
data register and sets a flag or generates an interrupt.
(See Figure 19-1.)
Advance Information
306
MC68HC08AS20 —Rev. 4.1
Freescale Semiconductor