C8051F996-GUR Silicon Labs, C8051F996-GUR Datasheet - Page 96
C8051F996-GUR
Manufacturer Part Number
C8051F996-GUR
Description
8-bit Microcontrollers - MCU 8kB ADC 14-CH CDC
Manufacturer
Silicon Labs
Datasheet
1.C8051F986-GUR.pdf
(322 pages)
Specifications of C8051F996-GUR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
- Current page: 96 of 322
- Download datasheet (2Mb)
C8051F99x-C8051F98x
7.6.
Comparator0 C8051F99x-C8051F98x devices has an analog input multiplexer to connect Port I/O pins
and internal signals the comparator inputs; CP0+/CP0- are the positive and negative input multiplexers for
Comparator0.
The comparator input multiplexers directly support capacitive touch switches. When the Capacitive Touch
Sense Compare input is selected on the positive or negative multiplexer, any Port I/O pin connected to the
other multiplexer can be directly connected to a capacitive touch switch with no additional external
components. The Capacitive Touch Sense Compare provides the appropriate reference level for detecting
when the capacitive touch switches have charged or discharged through the on-chip Rsense resistor. The
Comparator outputs can be routed to Timer2 or Timer3 for capturing sense capacitor’s charge and
discharge time. See Section “25. Timers” on page 276 for details.
Any of the following may be selected as comparator inputs: Port I/O pins, Capacitive Touch Sense
Compare, VDD Supply Voltage, Regulated Digital Supply Voltage (Output of VREG0) or ground. The
Comparator’s supply voltage divided by 2 is also available as an input; the resistors used to divide the
voltage only draw current when this setting is selected. The Comparator input multiplexers are configured
using the CPT0MX register described in SFR Definition 7.3.
Important Note About Comparator Input Configuration: Port pins selected as comparator inputs should
be configured as analog inputs, and should be skipped by the Digital Crossbar. To configure a Port pin for
analog input, set to 0 the corresponding bit in register PnMDIN and disable the digital driver (PnMDOUT =
0 and Port Latch = 1). To force the Crossbar to skip a Port pin, set to 1 the corresponding bit in register
PnSKIP. See Section “21. Port Input/Output” on page 213 for more Port I/O configuration details.
96
VDD
VDD
Comparator0 Analog Multiplexer
R
R
R
R
Digital Supply
CP0OUT
(1/3 or 2/3) x VDD
R
Voltage
P1.1
Capacitive
Compare
Sense
GND
Touch
½ x VDD
Figure 7.3. CP0 Multiplexer Block Diagram
CP0-
Input
MUX
CP0OUT
Rsense
Only enabled when
Capacitive Touch
Sense Compare is
selected on CP0+
Input MUX.
VDD
VDD
Rev. 1.1
R
R
R
R
CP0OUT
(1/3 or 2/3) x VDD
R
P1.0
VDD
Capacitive
Compare
GND
Touch
Sense
½ x VDD
CPT0MX
CP0+
Input
MUX
CP0OUT
Rsense
Only enabled when
Capacitive Touch
Sense Compare is
selected on CP0-
Input MUX.
+
-
VDD
GND
Related parts for C8051F996-GUR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT EVALUATION FOR CP2102
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT EVAL FOR CP2103 USB TO UART
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT EVAL FOR CP2201 ETH CTRLR
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DAUGHTER CARD CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT STARTER CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F320/F321
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEVKIT-F120/21/22/23/24/25/26/27
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F310/F311
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT F220/221/226/230/231/236
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT F300/301/302/303/304/305
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR C8051F330/F331
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR F005/006/007
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
DEV KIT FOR F020/F021/F022/F023
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT DEV FOR C8051F34X
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
KIT DEV FOR C8051F41X
Manufacturer:
Silicon Laboratories Inc
Datasheet: