C167CS datasheet(181/517 Pages) INFINEON

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C167CS

Derivatives

Parallel Ports

User’s Manual

7-54

V2.0, 2000-07

Alternate Functions of Port 8

All Port 8 lines (P8.7-0) serve as capture inputs or compare outputs (CC23IO …

CC16IO) for the CAPCOM2 unit (see Table 7-10).

The usage of the port lines by the CAPCOM unit, its accessibility via software and the

precautions are the same as described for the Port 2 lines.

As all other capture inputs, the capture input function of pins P8.7-0 can also be used as

external interrupt inputs (sample rate 16 TCL).

The CAN interface(s) can use 2 or 4 pins of Port 8 to interface the CAN Module(s) to an

external transceiver. In this case the number of possible CAPCOM IO lines is reduced.

Note: CAN interface lines will override general purpose IO and CAPCOM lines.

ODP8

P8 Open Drain Ctrl. Reg.

ESFR (F1D6H/EBH)

Reset Value: - - 00H

98765

43210

ODP8

Bit

Function

ODP8.y

Port 8 Open Drain control register bit y

ODP8.y = 0: Port line P8.y output driver in push/pull mode

ODP8.y = 1: Port line P8.y output driver in open drain mode

Table 7-10

Alternate Functions of Port 8

Port 8 Pin

Alternate Function

P8.0

P8.1

P8.2

P8.3

P8.4

P8.5

P8.6

P8.7

CC16IO

Capture input/compare output channel 16 or CAN

CC17IO

Capture input/compare output channel 17 or CAN

CC18IO

Capture input/compare output channel 18 or CAN

CC19IO

Capture input/compare output channel 19 or CAN

CC20IO

Capture input/compare output channel 20

CC21IO

Capture input/compare output channel 21

CC22IO

Capture input/compare output channel 22

CC23IO

Capture input/compare output channel 23

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