PIC12F1840T-I/SN Microchip Technology, PIC12F1840T-I/SN Datasheet - Page 295

• Manufacturer Part Number: PIC12F1840T-I/SN
• Description: 7 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 6 I/0, Enhanced Mid Range Core 8 SOI
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 12Fr

Specifications of PIC12F1840T-I/SN

• Core Processor: RISC
• Core Size: 8-Bit
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 5
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

27.0
The Capacitive Sensing (CPS) module allows for an
interaction with an end user without a mechanical
interface. In a typical application, the CPS 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 27-1:
 2011 Microchip Technology Inc.
Note
CPS0
CPS1
CPS2
CPS3
CAPACITIVE SENSING (CPS)
MODULE
1:
If CPSON = 0, disabling capacitive sensing, no channel is selected.
CAPACITIVE SENSING BLOCK DIAGRAM
CPSCH<3:0>
CPSON
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
T1GSEL<1:0>
T1CS<1:0>
/4
T1OSC/
F
F
T1CKI
T1G
OSC
OSC
0
1
/4
PIC12(L)F1840
TMR0CS
Timer0 Module
TMR0
Timer1 Module
Control Logic
Timer1 Gate
EN
TMR1H:TMR1L
Overflow
DS41441B-page 295
TMR0IF
Set