Fujitsu F2MCTM-16LX Manual do Utilizador descarregar pdf (Página 232)

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CHAPTER 13 16-Bit I/O TIMER

13.3 Configuration of 16-bit I/O Timer

This section explains the pins, registers, and interrupt factors of the 16-bit I/O timer.

■ Pins of 16-bit I/O Timer

The pins of the 16-bit I/O timer serve as general-purpose I/O ports. Table 13.3-1 shows the pin functions

and the pin settings required to use the 16-bit I/O timer.

■ Generation of Interrupt Request from 16-bit I/O Timer

The 16-bit I/O timer can generate an interrupt request as a result of the following factors:

●

Timer counter overflow interrupt

If the overflow interrupt request is set to enable (TCCSL: IVFE=1), the interrupt is occurred by the

following factor:

• 16-bit free-run timer overflow

●

Input capture interrupt

If the input capture interrupt request is set to enable (ICS: ICE=1), if the trigger edge is detected by the

input capture pin, or if the trigger edge for the LIN slave baud rate measurement from the LIN-UART is

inputted, the interrupt request is generated.

Table 13.3-1 Pins of 16-bit I/O Timer

Channel Pin Name Pin Function Setting to use the pin

16-bit free-run timer 0 P44/

FRCK0

General-purpose I/O port,

external clock input

Set as input port in port direction register (DDR).

Input capture 0 P24/IN0 General-purpose I/O

port, capture input

Set as input port in port direction register (DDR).

Input capture 1 P25/IN1 Set as input port in port direction register (DDR).

Input capture 2 P26/IN2 Set as input port in port direction register (DDR).

Input capture 3 P27/IN3 Set as input port in port direction register (DDR).

1 2 ... 227 228 229 230 231 232 233 234 235 236 237 ... 681 682

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