AC244027 Microchip Technology, AC244027 Datasheet - Page 129

• Manufacturer Part Number: AC244027
• Description: Processor Extension Pak (PIC16LF727-ICE) 200K Device Emulator - Debugger Accesso
• Manufacturer: Microchip Technology
• Series: -r

Specifications of AC244027

• Accessory Type: Debug Interface Module
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC16F727

14.0
The capacitive sensing module allows for an interaction
with an end user without a mechanical interface. In a
typical application, the capacitive sensing module is
attached to a pad on a printed circuit board (PCB), which
is electrically isolated from the end user. When the end
user places their finger over the PCB pad, a capacitive
load is added, causing a frequency shift in the capacitive
FIGURE 14-1:
© 2009 Microchip Technology Inc.
CPS10
CPS11
CPS12
CPS13
CPS14
CPS15
CPS8
CPS9
Note 1: Channels CPS<15:8> are implemented on PIC16F724/727/PIC16LF724/727 only.
CPS0
CPS1
CPS2
CPS3
CPS4
CPS5
CPS6
CPS7
CAPACITIVE SENSING
MODULE
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
2: CPSCH3 is not implemented on PIC16F722/723/726/PIC16LF722/723/726.
3: If CPSON = 0, disabling capacitive sensing, no channel is selected.
LP WDT
OSC
Watchdog Timer Module
CAPACITIVE SENSING BLOCK DIAGRAM
CPSON
CPSCH<3:0>
PS<2:0>
(3)
Capacitive
Oscillator
CPSOSC
Sensing
WDT
Scaler
(2)
CPSON
CPSRNG<1:0>
Overflow
CPSOUT
T0CKI
CPSCLK
WDT
Event
T0XCS
PIC16F72X/PIC16LF72X
0
1
sensing module. The capacitive sensing module
requires software and at least one timer resource to
determine the change in frequency. Key features of this
module include:
• Analog MUX for monitoring multiple inputs
• Capacitive sensing oscillator
• Multiple timer resources
• Software control
• Operation during Sleep
F
T1GSEL<1:0>
OSC
T1CS<1:0>
F
OSC
TMR2
/4
T1OSC/
F
T1G
T1CKI
OSC
/4
0
1
Overflow
T0CS
Timer0 Module
Timer1 Module
TMR0
EN
Control Logic
Timer1 Gate
Timer2 Module
TMR1H:TMR1L
Postscaler
Overflow
41341E-page 129
T0IF
Set
Set
TMR2IF