MC68HC705P9CS datasheet(129/160 Pages) FREESCALE

129 / 160 page

MC68HC705P9 — Rev. 4.0

Technical Data

MOTOROLA

Analog-to-Digital Converter (ADC)

129

Technical Data — MC68HC705P9

Section 11. Analog-to-Digital Converter (ADC)

11.1 Contents

11.2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

11.3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

11.4

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

11.4.1

Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

11.4.1.1

PC7/VRH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

11.4.1.2

PC6/AN0–PC3/AN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .132

11.5

Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

11.6

Timing and Electrical Characteristics . . . . . . . . . . . . . . . . . . . 133

11.7

I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

11.7.1

ADC Status and Control Register. . . . . . . . . . . . . . . . . . . . 134

11.7.2

ADC Data Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

11.8

Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

11.8.1

Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

11.8.2

Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

11.2 Features

Features include:

•

8-bit conversions with

± 1.5-LSB precision

•

Four external and three internal analog input channels

•

Wait mode operation

Freescale Semiconductor, Inc.

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MC68HC705P9CS Datasheet(PDF) 129 Page - Freescale Semiconductor, Inc

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