Megawin Technology Co., Ltd.
MG87FE/L52
Auto-Reload Up-Only Mode (ARUO)
In ARUO mode, Timer2 can be configured to count up with a software-defined value to be
reloaded. When reset is applied the DCEN =0 and CP/RL2=0, Timer2 is at ARUO mode. An
overflow on Timer2 or 1-to-0 transition on T2EX pin will load RCAP2H and RCAP2L contents
onto Timer2, also set TF2 and EXF2, respectively.
Auto-Reload Up-Down Mode (ARUD)
In ARUD mode, Timer2 can be configured to count up or down. When DCEN =1 and CP/RL2=0,
Timer2 is at ARUD mode. The counting direction is determined by T2EX pin. If T2EX=1,
counting up, otherwise counting down. An overflow on Timer2 will set TF2 and toggle EXF2.
EXF2 can not generate interrupt request in this mode. If the counting direction is DOWN, the
overflow loads 0xFFFF onto Timer2 and loads RCAP2H, RCAP2L contents onto Timer2 if
counting direction is UP.
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Preliminary ver 1.3
Date: 2009-JAN-20
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
