mc9s08sg4 Freescale Semiconductor, Inc, mc9s08sg4 Datasheet - Page 113
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mc9s08sg4
Manufacturer Part Number
mc9s08sg4
Description
8-bit Microcontroller Family
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S08SG4.pdf
(320 pages)
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8.2
The ACMP has two analog input pins, ACMP+ and ACMP- and one digital output pin ACMPO. Each of
these pins can accept an input voltage that varies across the full operating voltage range of the MCU. As
shown in
pin is connected to the comparator non-inverting input if ACBGS is a 0. As shown in
ACMPO pin can be enabled to drive an external pin.
The signal properties of ACMP are shown in
8.3
8.3.1
The ACMP includes one register:
Refer to the direct-page register summary in the memory section of this data sheet for the absolute address
assignments for all ACMP registers.This section refers to registers and control bits only by their names .
Some MCUs may have more than one ACMP, so register names include placeholder characters to identify
which ACMP is being referenced.
Freescale Semiconductor
•
An 8-bit status and control register
Figure
External Signal Description
Memory Map
Register Descriptions
8-2, the ACMP- pin is connected to the inverting input of the comparator, and the ACMP+
ACMPO
ACMP+
ACMP-
Signal
MC9S08SG8 MCU Series Data Sheet, Rev. 3
Inverting analog input to the ACMP.
(Minus input)
Non-inverting analog input to the ACMP.
(Positive input)
Digital output of the ACMP.
Table 8-1. Signal Properties
Table
Function
8-1.
Chapter 8 Analog Comparator (S08ACMPV2)
I/O
O
I
I
Figure
8-2, the
113
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