mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 349

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Technical Data — MC68HC912D60A
18.1 Contents
18.2 Introduction
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
18.2
18.3
18.4
18.5
18.6
18.7
18.8
18.9
The 112TQFP version of the MC68HC912D60A has two identical ATD
modules identified as ATD0 and ATD1. Except for the V
Analog supply voltage, all pins are duplicated and indexed with ‘0’ or ‘1’
in the following description. An ‘x’ indicates either ‘0’ or ‘1’.
The 80QFP version has only one ATD available, ATD0. ATD1 is not
bonded out. As this module defaults to disabled on reset and it's I/O are
inputs by default it requires no configuration.
The ATD module is an 8-channel, 10-bit or 8-bit, multiplexed-input,
successive-approximation analog-to-digital converter. It does not
require external sample and hold circuits because of the type of charge
redistribution technique used. The ATD converter timing can be
synchronized to the system PCLK. The ATD module consists of a 16-
word (32-byte) memory-mapped control register block used for control,
testing and configuration.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
ATD Operation In Different MCU Modes . . . . . . . . . . . . . . . . 355
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .352
ATD Operational Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
General Purpose Digital Input Port Operation . . . . . . . . . . . . 357
Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . .358
ATD Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Section 18. Analog-to-Digital Converter
Analog-to-Digital Converter
DDA
Technical Data
and V
SSA
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