MC68HC05V12 Datasheet, PDF (127/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC05V12
Section 13. Analog-to-Digital (A/D) Converter
13.1 Contents
13.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
13.3 Analog Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
13.3.1 Ratiometric Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . .128
13.3.2 V_REFH and V_REFL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
13.3.3 Accuracy and Precision . . . . . . . . . . . . . . . . . . . . . . . . . . .128
13.3.4 Conversion Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
13.4 Digital Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
13.4.1 Conversion Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
13.4.2 Internal and Master Oscillators. . . . . . . . . . . . . . . . . . . . . .129
13.4.3 Multi-Channel Operation . . . . . . . . . . . . . . . . . . . . . . . . . .129
13.5 A/D Status and Control Register. . . . . . . . . . . . . . . . . . . . . . .130
13.6 A/D Data Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
13.7 A/D during Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
13.8 A/D during Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
13.2 Introduction
The MC68HC05V12 includes a 5-channel, 8-bit, multiplexed input and a
successive approximation analog-to-digital (A/D) converter.
MC68HC05V12 — Rev. 2.0
Analog-to-Digital (A/D) Converter
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Technical Data