MC68HC705P9 Datasheet, PDF (130/160 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Analog-to-Digital Converter (ADC)
11.3 Introduction
The ADC consists of a single successive-approximation A/D converter,
an input multiplexer to select one of four external or two internal
channels, and control circuitry. Figure 11-1 shows the structure of the
ADC module.
AN3
COMPARATOR
AN2
INPUT
AN1
MULTIPLEXER
AN1
CH2
CH1
CH0
V_RH
V_SS
DIGITAL-
TO-ANALOG
CONVERTER
CCF
ADON
INTERNAL CLOCK
(XTAL ÷ 2)
CONTROL
LOGIC
ADRC
INTERNAL
RC
OSCILLATOR
Figure 11-1. ADC Block Diagram
Technical Data
130
Analog-to-Digital Converter (ADC)
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MC68HC705P9 — Rev. 4.0
MOTOROLA