DM183026-2 Microchip Technology, DM183026-2 Datasheet - Page 51

• Manufacturer Part Number: DM183026-2
• Description: KIT EVAL MTOUCH CAPACTIVIE
• Manufacturer: Microchip Technology
• Series: mTouch™r

Specifications of DM183026-2

• Sensor Type: Touch, Capacitive
• Sensing Range: 8 & 12 Buttons/Keys, 2 Sliders
• Interface: I²C
• Voltage - Supply: 5V, USB
• Embedded: Yes
• Utilized Ic / Part: PIC16F, PIC18F, PIC24F, PIC32MX
• Interface Type: USB, I2C, UART
• Operating Voltage: 5 V
• Data Bus Width: 32 bit
• Silicon Manufacturer: Microchip
• Kit Application Type: Sensing - Touch / Proximity
• Application Sub Type: Capacitive Touch
• Kit Contents: 8x Brds, Serial Anaylizer, USB Cable
• For Use With/related Products: PIC16F, PIC24F, PIC18F, PIC32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE B-1:
© 2010 Microchip Technology Inc.
PercentReleased >
Debounce counter
< ReleaseCount
OffThreshold
CapSenseStateMachine()
MeasureSamplePeriod
once for each Button
ReleasedAverage
and store in
Prime:
Start Debounce counter
ReleaseDebounce:
Start ButtonTimout
PercentReleased <
OffThreshold
Pressed:
counter
mTOUCH™ – PIC16F CSM STATE DIAGRAMS (CONTINUED)
1/2 StartUpDelay
is timing
mTouch™ PIC16F CSM State Diagrams
< ButtonTimeout
PressedTime
MeasureSamplePeriod
Debounce Counter > ReleaseCount
for each Button and
ReleasedAverage
SetSampleTime:
Debounce Counter > PressCount
average in
> ButtonTimeout
> ButtonTimeout
InitializeSystem()
PressedTime
PressedTime
1/2 StartUpDelay
StartUpDelay
is timing
complete
Debounce counter
< PressCount
StartUpDelay complete
once for each Button in
Store CurrentSample
Start Debounce counter
Average CurrentSample
PrimeNewSample:
ReleasedAverage
PercentReleased >
in ReleasedAverage
CurrentSample in
ReleasedAverage
PressThreshold
PressDebounce:
Released:
Average
StartUp:
DS41385C-page 51
PercentReleased <
PressThreshold