MC9S12GRMV1 Datasheet, PDF (255/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

Chapter 3
5V Analog Comparator (ACMPV1)
Revision History
Rev. No. Date (Submitted
(Item No.)
By)
V00.08
13 Aug 2010
Sections
Affected
Substantial Change(s)
• Added register name to every bitfield reference
V00.09
V01.00
10 Sep 2010
18 Oct 2010
• Internal updates
•
• Initial version
•
3.1 Introduction
The analog comparator (ACMP) provides a circuit for comparing two analog input voltages. Refer to the
device overview section for availability on a specific device.
3.2 Features
The ACMP has the following features:
• Low offset, low long-term offset drift
• Selectable interrupt on rising, falling, or rising and falling edges of comparator output
• Option to output comparator signal on an external pin ACMPO
• Option to trigger timer input capture events
3.3 Block Diagram
The block diagram of the ACMP is shown below.
MC9S12G Family Reference Manual, Rev.1.23
Freescale Semiconductor
257