MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 367

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Technical Data — MC68HC912DT128A
19.1 Contents
19.2 Introduction
MC68HC912DT128A — Rev 4.0
MOTOROLA
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
The MC68HC912DT128A has two identical ATD modules identified as
ATD0 and ATD1. Except for the V
all pins are duplicated and indexed with ‘0’ or ‘1’ in the following
description. An ‘x’ indicates either ‘0’ or ‘1’.
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .369
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .370
ATD Operational Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .372
ATD Operation In Different MCU Modes . . . . . . . . . . . . . . . . 373
General Purpose Digital Input Port Operation . . . . . . . . . . . .375
Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . .376
ATD Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Section 19. Analog-to-Digital Converter
Analog-to-Digital Converter
DDA
and V
SSA
Analog supply voltage,
Technical Data
367