Fujitsu F2 MC-8FX Family, Hardware Manual

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CHAPTER 16 8/16-BIT COMPOSITE TIMER
16.4 Pins of 8/16-bit Composite Timer
This section describes the pins related to the 8/16-bit composite timer.
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Pins Related to 8/16-bit Composite Timer
The external pins related to the 8/16-bit composite timer are TO00, TO01, EC0, and EC1. TII0 is for
internal chip connection.
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TO00 pins
TO00:
This pin serves as the timer output pin for timer 00 during 8-bit operation or for timers 00 and 01 during
16-bit operation. When the output is enabled (T00CR1:OE = 1) in interval timer, PWM timer, or PWC
timer function, the pin is set for output automatically regardless of the port direction register (DDR2:bit2)
to serve as the timer output TO00 pin.
The output remains indeterminate when the input capture function has been selected enabling output.
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TO01 pins
TO01:
This pin serves as the timer output pin for timer 01 during 8-bit operation. When the output is enabled
(T00CR1:OE = 1) in interval timer, PWM timer (fixed cycle mode), or PWC timer function, the pin is set
for output automatically regardless of the port direction register (DDR2:bit3) to serve as the timer output
TO01 pin.
The output remains indeterminate during 16-bit operation when the PWM timer function (variable-cycle
mode) or input capture function has been selected enabling output.
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EC0 pins
The EC0 pin is connected to the EC00 and EC01 internal pins.
EC00 internal pin:
This pin serves as the external count clock input pin for timer 00 when the interval timer or PWM timer
function has been selected, or as the signal input pin for timer 00 when the PWC timer or input capture
function has been selected. The pin cannot be set as the external count clock input pin when the PWC
timer or input capture function has been selected.
To use this input feature, set the port direction register (DDR2:bit4) to "0" to set the pin as an input port.
EC01 internal pin:
This pin serves as the external count clock input pin for timer 01 when the interval timer or PWM timer
function has been selected or the signal input pin for timer 01 when the PWC timer or input capture
function has been selected. The pin cannot be set as the external count clock input pin when the PWC
timer or input capture function has been selected.
This input is not used during 16-bit operation. The input can be used as well when the PWM timer
function has been selected (variable-cycle mode).
To use this input feature, set the port direction register (DDR2:bit4) to set the pin as an input port.