C8051F715-GMR Silicon Labs, C8051F715-GMR Datasheet - Page 78
C8051F715-GMR
Manufacturer Part Number
C8051F715-GMR
Description
8-bit Microcontrollers - MCU 8kB Cap Sense
Manufacturer
Silicon Labs
Datasheet
1.C8051F709-GQR.pdf
(306 pages)
Specifications of C8051F715-GMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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C8051F70x/71x
14.1. Comparator Multiplexer
C8051F70x/71x devices include an analog input multiplexer to connect Port I/O pins to the comparator
inputs. The Comparator0 inputs are selected in the CPT0MX register (SFR Definition 14.3). The CMX0P2–
CMX0P0 bits select the Comparator0 positive input; the CMX0N2–CMX0N0 bits select the Comparator0
negative input.
Important Note About Comparator Inputs: The Port pins selected as comparator inputs should be con-
figured as analog inputs in their associated Port configuration register, and configured to be skipped by the
Crossbar (for details on Port configuration, see Section “28.6. Special Function Registers for Accessing
and Configuring Port I/O” on page 194).
78
Figure 14.3. Comparator Input Multiplexer Block Diagram
P1.7 / P2.0*
*P1.7 on 64 and 48-pin devices, P2.0 on 32 and 24-pin devices
P1.1
P1.3
P1.5
P1.0
P1.2
P1.4
P1.6
CPT0MX
Rev. 1.0
CP0 +
CP0 -
-
+
VDD
GND
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