Renesas 7700 FAMILY User Manual page 83

TIMER A
5.1 Overview
Timer A is used primarily for output to externals. It consists of five counters, timers A0 to A4, each equipped
with a 16-bit reload function. Timers A0 to A4 operate independently of one another.
5.1 Overview
Timer Ai (i = 0 to 4) has four operating modes listed below. Except for the event counter mode, Timers A0
to A4 all have the same functions.
Timer mode
The timer counts an internally generated count source. Following functions can be used in this mode:
•Gate function
•Pulse output function
Event counter mode
The timer counts an external signal. Following functions can be used in this mode:
•Pulse output function
•Two-phase pulse signal processing function (Timers A2, A3, and A4)
One-shot pulse mode
The timer outputs a pulse which has an arbitrary width once.
Pulse width modulation (PWM) mode
Timer outputs pulses which have an arbitrary width in succession. The timer functions as which pulse
width modulator as follows:
•16-bit pulse width modulator
•8-bit pulse width modulator
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7751 Group User's Manual