MC68HC11P2 Datasheet, PDF (173/268 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Technical Data — MC68HC11P2
Section 9. Analog-to-Digital Converter
9.1 Contents
9.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
9.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174
9.4 A/D converter power-up and clock select . . . . . . . . . . . . . 178
9.5 Channel assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
9.6 Control, status and results registers . . . . . . . . . . . . . . . . . 181
9.7 Operation in STOP and WAIT modes . . . . . . . . . . . . . . . . . 184
9.2 Introduction
The analog-to-digital (A/D) system, a successive approximation
converter, uses an all-capacitive charge redistribution technique to
convert analog signals to digital values.
The A/D converter shares input pins with port E:
Pin
Alternate
function
PE0
AD0
PE1
AD1
PE2
AD2
PE3
AD3
PE4
AD4
PE5
AD5
PE6
AD6
PE7
AD7
MC68HC11P2 — Rev 1.0
Analog-to-Digital Converter
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Technical Data