PIC16F1947-I/PT Microchip Technology Inc., PIC16F1947-I/PT Datasheet - Page 325

• Manufacturer Part Number: PIC16F1947-I/PT
• Description: 64 TQFP 10x10x1mm TRAY28KB Flash, 1KB RAM, 256B EEPROM, LCD, 1.8-5.5V
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F1947-I/PT

• A/d Inputs: 17-Channel, 10-Bit
• Comparators: 3
• Cpu Speed: 8 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 54
• Interface: CAN/I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 28K Bytes
• Ram Size: 1K Bytes
• Speed: 32 MHz
• Timers: 4-8-bit, 1-16-bit
• Voltage, Range: 1.8-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

26.0
The Capacitive Sensing (CPS) module allows for an
interaction with an end user without a mechanical
interface. In a typical application, the CPS 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
CPS module. The CPS 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 Power modes
• High power range with variable voltage references
• Multiple timer resources
• Software control
• Operation during Sleep
FIGURE 26-1:
 2010 Microchip Technology Inc.
Note 1:
CPS10
CPS12
CPS13
CPS14
CPS15
CPS16
CPS11
CPS0
CPS1
CPS2
CPS3
CPS4
CPS5
CPS6
CPS7
CPS8
CPS9
CAPACITIVE SENSING (CPS)
MODULE
If CPSON = 0, disabling capacitive sensing, no channel is selected.
CAPACITIVE SENSING BLOCK DIAGRAM
CPSON
CPSCH<3:0>
Ref-
(1)
0
1
Capacitive
Oscillator
CPSOSC
CPSRM
Sensing
DAC
Ref+
CPSRNG<1:0>
CPSON
0
1
FVR
Ref.
Int.
T0CKI
Preliminary
T0XCS
CPSOUT
CPSCLK
0
1
F
OSC
SYNCC1OUT
SYNCC2OUT
T1GSEL<1:0>
T1CS<1:0>
/4
PIC16F/LF1946/47
T1OSC/
F
F
T1CKI
T1G
OSC
OSC
0
1
/4
TMR0CS
Timer0 Module
TMR0
Timer1 Module
Control Logic
Timer1 Gate
EN
TMR1H:TMR1L
Overflow
DS41414B-page 325
TMR0IF
Set