PIC16F1827-I/SS Microchip Technology Inc., PIC16F1827-I/SS Datasheet - Page 315

• Manufacturer Part Number: PIC16F1827-I/SS
• Description: 20 SSOP .209in TUBE, 7 KB Flash, 384 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhance
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F1827-I/SS

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 8 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 16
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin SSOP
• Programmable Memory: 7K Bytes
• Ram Size: 384 Bytes
• Speed: 32 MHz
• Timers: 4-8-bit, 1-16-bit
• Voltage, Range: 1.8-5.5 V
• Standby Current (pic16lf182x): 30 nA @ 1.8 V, Typical
• Lead Free Status / Rohs Status: RoHS Compliant part

27.0
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 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
FIGURE 27-1:
 2011 Microchip Technology Inc.
Note 1:
CPS10
CPS11
CPS0
CPS1
CPS2
CPS3
CPS4
CPS5
CPS6
CPS7
CPS8
CPS9
CAPACITIVE SENSING
MODULE
If CPSON = 0, disabling capacitive sensing, no channel is selected.
CAPACITIVE SENSING BLOCK DIAGRAM
CPSON
CPSCH<3:0>
(1)
Capacitive
Oscillator
CPSOSC
Sensing
CPSON
CPSRNG<1:0>
CPSOUT
T0CKI
CPSCLK
T0XCS
0
1
SYNCC1OUT
SYNCC2OUT
T1GSEL<1:0>
F
OSC
T1CS<1:0>
T1OSC/
F
PIC16(L)F1826/27
F
/4
OSC
T1CKI
T1G
OSC
/4
0
1
TMR0CS
Timer0 Module
Timer1 Module
TMR0
Control Logic
Timer1 Gate
EN
TMR1H:TMR1L
Overflow
DS41391D-page 315
TMR0IF
Set