MC68HC05PV8 Datasheet, PDF (103/196 Pages) Freescale Semiconductor, Inc – Techinal Data - rev 1.9

Freescale Semiconductor, Inc.
Input/Output Ports
Port C (High Voltage Port)
7.6.1 Port C Timer Channels
The port pins PC0–5 are shared with the 16-bit timer channels
(TCAP1–2, TCMP1–2).
7.6.2 Port C PWM Channel
The port pins PC0, 4–6 are shared with the PWM channel. In order to
connect those pins, please refer to 7.6.6 Port C Configuration
Register 0 for details.
7.6.3 Port C Contact Sense Circuitry
The port C pins PC0–4 have a special contact sense circuit (see Figure
7-8, Figure 7-9, Figure 7-10). This feature allows, for example, the
monitoring of mechanical contacts in automotive applications (switch
monitor).
CSDT
VSUP
Interrupt
DDR
DATA
R_EXT
I_PIN
PC0
CSEN&DATA&DDRC
Contact
Sense
VSS
Figure 7-8 PC0 Contact Sense Circuitry
MC68HC(8)05PV8/A — Rev. 1.9
Input/Output Ports
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Technical Data